diff options
author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/core/float | |
parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) | |
download | ruby-1d15d5f08032acf1b7bceacbb450d617ff6e0931.tar.gz |
Move spec/rubyspec to spec/ruby for consistency
* Other ruby implementations use the spec/ruby directory.
[Misc #13792] [ruby-core:82287]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/core/float')
52 files changed, 1134 insertions, 0 deletions
diff --git a/spec/ruby/core/float/abs_spec.rb b/spec/ruby/core/float/abs_spec.rb new file mode 100644 index 0000000000..3ff2e4369b --- /dev/null +++ b/spec/ruby/core/float/abs_spec.rb @@ -0,0 +1,5 @@ +require File.expand_path('../shared/abs', __FILE__) + +describe "Float#abs" do + it_behaves_like(:float_abs, :abs) +end diff --git a/spec/ruby/core/float/angle_spec.rb b/spec/ruby/core/float/angle_spec.rb new file mode 100644 index 0000000000..2a5d40ad30 --- /dev/null +++ b/spec/ruby/core/float/angle_spec.rb @@ -0,0 +1,5 @@ +require File.expand_path('../../../shared/complex/float/arg', __FILE__) + +describe "Float#angle" do + it_behaves_like :float_arg, :angle +end diff --git a/spec/ruby/core/float/arg_spec.rb b/spec/ruby/core/float/arg_spec.rb new file mode 100644 index 0000000000..20a8ac0a63 --- /dev/null +++ b/spec/ruby/core/float/arg_spec.rb @@ -0,0 +1,5 @@ +require File.expand_path('../../../shared/complex/float/arg', __FILE__) + +describe "Float#arg" do + it_behaves_like :float_arg, :arg +end diff --git a/spec/ruby/core/float/case_compare_spec.rb b/spec/ruby/core/float/case_compare_spec.rb new file mode 100644 index 0000000000..c2ad2941e0 --- /dev/null +++ b/spec/ruby/core/float/case_compare_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/equal', __FILE__) + +describe "Float#===" do + it_behaves_like :float_equal, :=== +end diff --git a/spec/ruby/core/float/ceil_spec.rb b/spec/ruby/core/float/ceil_spec.rb new file mode 100644 index 0000000000..8037164c68 --- /dev/null +++ b/spec/ruby/core/float/ceil_spec.rb @@ -0,0 +1,13 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#ceil" do + it "returns the smallest Integer greater than or equal to self" do + -1.2.ceil.should eql( -1) + -1.0.ceil.should eql( -1) + 0.0.ceil.should eql( 0 ) + 1.3.ceil.should eql( 2 ) + 3.0.ceil.should eql( 3 ) + -9223372036854775808.1.ceil.should eql(-9223372036854775808) + +9223372036854775808.1.ceil.should eql(+9223372036854775808) + end +end diff --git a/spec/ruby/core/float/coerce_spec.rb b/spec/ruby/core/float/coerce_spec.rb new file mode 100644 index 0000000000..90475f2680 --- /dev/null +++ b/spec/ruby/core/float/coerce_spec.rb @@ -0,0 +1,18 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#coerce" do + it "returns [other, self] both as Floats" do + 1.2.coerce(1).should == [1.0, 1.2] + 5.28.coerce(1.0).should == [1.0, 5.28] + 1.0.coerce(1).should == [1.0, 1.0] + 1.0.coerce("2.5").should == [2.5, 1.0] + 1.0.coerce(3.14).should == [3.14, 1.0] + + a, b = -0.0.coerce(bignum_value) + a.should be_close(9223372036854775808.0, TOLERANCE) + b.should be_close(-0.0, TOLERANCE) + a, b = 1.0.coerce(bignum_value) + a.should be_close(9223372036854775808.0, TOLERANCE) + b.should be_close(1.0, TOLERANCE) + end +end diff --git a/spec/ruby/core/float/comparison_spec.rb b/spec/ruby/core/float/comparison_spec.rb new file mode 100644 index 0000000000..49c3debbe1 --- /dev/null +++ b/spec/ruby/core/float/comparison_spec.rb @@ -0,0 +1,36 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#<=>" do + it "returns -1, 0, 1 when self is less than, equal, or greater than other" do + (1.5 <=> 5).should == -1 + (2.45 <=> 2.45).should == 0 + ((bignum_value*1.1) <=> bignum_value).should == 1 + end + + it "returns nil when either argument is NaN" do + (nan_value <=> 71.2).should be_nil + (1771.176 <=> nan_value).should be_nil + end + + it "returns nil when the given argument is not a Float" do + (1.0 <=> "1").should be_nil + end + + # The 4 tests below are taken from matz's revision 23730 for Ruby trunk + # + it "returns 1 when self is Infinity and other is a Bignum" do + (infinity_value <=> Float::MAX.to_i*2).should == 1 + end + + it "returns -1 when self is negative and other is Infinty" do + (-Float::MAX.to_i*2 <=> infinity_value).should == -1 + end + + it "returns -1 when self is -Infinity and other is negative" do + (-infinity_value <=> -Float::MAX.to_i*2).should == -1 + end + + it "returns 1 when self is negative and other is -Infinity" do + (-Float::MAX.to_i*2 <=> -infinity_value).should == 1 + end +end diff --git a/spec/ruby/core/float/constants_spec.rb b/spec/ruby/core/float/constants_spec.rb new file mode 100644 index 0000000000..31930b125a --- /dev/null +++ b/spec/ruby/core/float/constants_spec.rb @@ -0,0 +1,55 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float constant" do + it "DIG is 15" do + Float::DIG.should == 15 + end + + it "EPSILON is 2.220446049250313e-16" do + Float::EPSILON.should == 2.0 ** -52 + Float::EPSILON.should == 2.220446049250313e-16 + end + + it "MANT_DIG is 53" do + Float::MANT_DIG.should == 53 + end + + it "MAX_10_EXP is 308" do + Float::MAX_10_EXP.should == 308 + end + + it "MIN_10_EXP is -308" do + Float::MIN_10_EXP.should == -307 + end + + it "MAX_EXP is 1024" do + Float::MAX_EXP.should == 1024 + end + + it "MIN_EXP is -1021" do + Float::MIN_EXP.should == -1021 + end + + it "MAX is 1.7976931348623157e+308" do + # See https://en.wikipedia.org/wiki/Double-precision_floating-point_format#Double-precision_examples + Float::MAX.should == (1 + (1 - (2 ** -52))) * (2.0 ** 1023) + Float::MAX.should == 1.7976931348623157e+308 + end + + it "MIN is 2.2250738585072014e-308" do + Float::MIN.should == (2.0 ** -1022) + Float::MIN.should == 2.2250738585072014e-308 + end + + it "RADIX is 2" do + Float::RADIX.should == 2 + end + + it "INFINITY is the positive infinity" do + Float::INFINITY.infinite?.should == 1 + end + + it "NAN is 'not a number'" do + Float::NAN.nan?.should be_true + end +end diff --git a/spec/ruby/core/float/denominator_spec.rb b/spec/ruby/core/float/denominator_spec.rb new file mode 100644 index 0000000000..56f5d288cf --- /dev/null +++ b/spec/ruby/core/float/denominator_spec.rb @@ -0,0 +1,29 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#denominator" do + before :each do + @numbers = [ + 0.0, + 29871.22736282, + 7772222663.0, + 1.4592, + ].map {|n| [0-n, n]}.flatten + end + + it "returns an Integer" do + @numbers.each do |number| + number.denominator.should be_kind_of(Integer) + end + end + + it "converts self to a Rational and returns the denominator" do + @numbers.each do |number| + number.denominator.should == Rational(number).denominator + end + end + + it "returns 1 for NaN and Infinity" do + nan_value.denominator.should == 1 + infinity_value.denominator.should == 1 + end +end diff --git a/spec/ruby/core/float/divide_spec.rb b/spec/ruby/core/float/divide_spec.rb new file mode 100644 index 0000000000..0acd7b20b4 --- /dev/null +++ b/spec/ruby/core/float/divide_spec.rb @@ -0,0 +1,36 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/coerce.rb', __FILE__) + +describe "Float#/" do + it "returns self divided by other" do + (5.75 / -2).should be_close(-2.875,TOLERANCE) + (451.0 / 9.3).should be_close(48.494623655914,TOLERANCE) + (91.1 / -0xffffffff).should be_close(-2.12108716418061e-08, TOLERANCE) + end + + it "properly coerces objects" do + (5.0 / FloatSpecs::CanCoerce.new(5)).should be_close(0, TOLERANCE) + end + + it "returns +Infinity when dividing non-zero by zero of the same sign" do + (1.0 / 0.0).should be_positive_infinity + (-1.0 / -0.0).should be_positive_infinity + end + + it "returns -Infinity when dividing non-zero by zero of opposite sign" do + (-1.0 / 0.0).should be_negative_infinity + (1.0 / -0.0).should be_negative_infinity + end + + it "returns NaN when dividing zero by zero" do + (0.0 / 0.0).should be_nan + (-0.0 / 0.0).should be_nan + (0.0 / -0.0).should be_nan + (-0.0 / -0.0).should be_nan + end + + it "raises a TypeError when given a non-Numeric" do + lambda { 13.0 / "10" }.should raise_error(TypeError) + lambda { 13.0 / :symbol }.should raise_error(TypeError) + end +end diff --git a/spec/ruby/core/float/divmod_spec.rb b/spec/ruby/core/float/divmod_spec.rb new file mode 100644 index 0000000000..174f142c86 --- /dev/null +++ b/spec/ruby/core/float/divmod_spec.rb @@ -0,0 +1,43 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#divmod" do + it "returns an [quotient, modulus] from dividing self by other" do + values = 3.14.divmod(2) + values[0].should eql(1) + values[1].should be_close(1.14, TOLERANCE) + values = 2.8284.divmod(3.1415) + values[0].should eql(0) + values[1].should be_close(2.8284, TOLERANCE) + values = -1.0.divmod(bignum_value) + values[0].should eql(-1) + values[1].should be_close(9223372036854775808.000, TOLERANCE) + values = -1.0.divmod(1) + values[0].should eql(-1) + values[1].should eql(0.0) + end + + # Behaviour established as correct in r23953 + it "raises a FloatDomainError if self is NaN" do + lambda { nan_value.divmod(1) }.should raise_error(FloatDomainError) + end + + # Behaviour established as correct in r23953 + it "raises a FloatDomainError if other is NaN" do + lambda { 1.divmod(nan_value) }.should raise_error(FloatDomainError) + end + + # Behaviour established as correct in r23953 + it "raises a FloatDomainError if self is Infinity" do + lambda { infinity_value.divmod(1) }.should raise_error(FloatDomainError) + end + + it "raises a ZeroDivisionError if other is zero" do + lambda { 1.0.divmod(0) }.should raise_error(ZeroDivisionError) + lambda { 1.0.divmod(0.0) }.should raise_error(ZeroDivisionError) + end + + # redmine #5276" + it "returns the correct [quotient, modulus] even for large quotient" do + 0.59.divmod(7.761021455128987e-11).first.should eql(7602092113) + end +end diff --git a/spec/ruby/core/float/eql_spec.rb b/spec/ruby/core/float/eql_spec.rb new file mode 100644 index 0000000000..7c4eef8523 --- /dev/null +++ b/spec/ruby/core/float/eql_spec.rb @@ -0,0 +1,16 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#eql?" do + it "returns true if other is a Float equal to self" do + 0.0.eql?(0.0).should be_true + end + + it "returns false if other is a Float not equal to self" do + 1.0.eql?(1.1).should be_false + end + + it "returns false if other is not a Float" do + 1.0.eql?(1).should be_false + 1.0.eql?(:one).should be_false + end +end diff --git a/spec/ruby/core/float/equal_value_spec.rb b/spec/ruby/core/float/equal_value_spec.rb new file mode 100644 index 0000000000..19ef01fc1c --- /dev/null +++ b/spec/ruby/core/float/equal_value_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/equal', __FILE__) + +describe "Float#==" do + it_behaves_like :float_equal, :== +end diff --git a/spec/ruby/core/float/exponent_spec.rb b/spec/ruby/core/float/exponent_spec.rb new file mode 100644 index 0000000000..5cbba43a27 --- /dev/null +++ b/spec/ruby/core/float/exponent_spec.rb @@ -0,0 +1,15 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#**" do + it "returns self raise to the other power" do + (2.3 ** 3).should be_close(12.167,TOLERANCE) + (5.2 ** -1).should be_close(0.192307692307692,TOLERANCE) + (9.5 ** 0.5).should be_close(3.08220700148449, TOLERANCE) + (9.5 ** 0xffffffff).to_s.should == 'Infinity' + end + + it "returns a complex number when negative and raised to a fractional power" do + ((-8.0) ** (1.0/3)) .should be_close(Complex(1, 1.73205), TOLERANCE) + ((-8.0) ** Rational(1,3)).should be_close(Complex(1, 1.73205), TOLERANCE) + end +end diff --git a/spec/ruby/core/float/fdiv_spec.rb b/spec/ruby/core/float/fdiv_spec.rb new file mode 100644 index 0000000000..632dd0f293 --- /dev/null +++ b/spec/ruby/core/float/fdiv_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/quo', __FILE__) + +describe "Float#fdiv" do + it_behaves_like :float_quo, :fdiv +end diff --git a/spec/ruby/core/float/finite_spec.rb b/spec/ruby/core/float/finite_spec.rb new file mode 100644 index 0000000000..d6a161d4e3 --- /dev/null +++ b/spec/ruby/core/float/finite_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#finite?" do + it "returns true for finite values" do + 3.14159.finite?.should == true + end + + it "returns false for positive infinity" do + infinity_value.finite?.should == false + end + + it "returns false for negative infinity" do + (-infinity_value).finite?.should == false + end + + it "returns false for NaN" do + nan_value.finite?.should == false + end +end diff --git a/spec/ruby/core/float/fixtures/coerce.rb b/spec/ruby/core/float/fixtures/coerce.rb new file mode 100644 index 0000000000..2cf155be95 --- /dev/null +++ b/spec/ruby/core/float/fixtures/coerce.rb @@ -0,0 +1,15 @@ +module FloatSpecs + class CanCoerce + def initialize(a) + @a = a + end + + def coerce(b) + [self.class.new(b), @a] + end + + def /(b) + @a.to_i % b.to_i + end + end +end diff --git a/spec/ruby/core/float/float_spec.rb b/spec/ruby/core/float/float_spec.rb new file mode 100644 index 0000000000..f2931d184c --- /dev/null +++ b/spec/ruby/core/float/float_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float" do + it "includes Comparable" do + Float.include?(Comparable).should == true + end + + it ".allocate raises a TypeError" do + lambda do + Float.allocate + end.should raise_error(TypeError) + end + + it ".new is undefined" do + lambda do + Float.new + end.should raise_error(NoMethodError) + end +end diff --git a/spec/ruby/core/float/floor_spec.rb b/spec/ruby/core/float/floor_spec.rb new file mode 100644 index 0000000000..63a5138366 --- /dev/null +++ b/spec/ruby/core/float/floor_spec.rb @@ -0,0 +1,13 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#floor" do + it "returns the largest Integer less than or equal to self" do + -1.2.floor.should eql( -2) + -1.0.floor.should eql( -1) + 0.0.floor.should eql( 0 ) + 1.0.floor.should eql( 1 ) + 5.9.floor.should eql( 5 ) + -9223372036854775808.1.floor.should eql(-9223372036854775808) + +9223372036854775808.1.floor.should eql(+9223372036854775808) + end +end diff --git a/spec/ruby/core/float/gt_spec.rb b/spec/ruby/core/float/gt_spec.rb new file mode 100644 index 0000000000..9725c6acd7 --- /dev/null +++ b/spec/ruby/core/float/gt_spec.rb @@ -0,0 +1,14 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#>" do + it "returns true if self is greater than other" do + (1.5 > 1).should == true + (2.5 > 3).should == false + (45.91 > bignum_value).should == false + end + + it "raises an ArgumentError when given a non-Numeric" do + lambda { 5.0 > "4" }.should raise_error(ArgumentError) + lambda { 5.0 > mock('x') }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/core/float/gte_spec.rb b/spec/ruby/core/float/gte_spec.rb new file mode 100644 index 0000000000..2c14651dd7 --- /dev/null +++ b/spec/ruby/core/float/gte_spec.rb @@ -0,0 +1,14 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#>=" do + it "returns true if self is greater than or equal to other" do + (5.2 >= 5.2).should == true + (9.71 >= 1).should == true + (5.55382 >= 0xfabdafbafcab).should == false + end + + it "raises an ArgumentError when given a non-Numeric" do + lambda { 5.0 >= "4" }.should raise_error(ArgumentError) + lambda { 5.0 >= mock('x') }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/core/float/hash_spec.rb b/spec/ruby/core/float/hash_spec.rb new file mode 100644 index 0000000000..c638e99347 --- /dev/null +++ b/spec/ruby/core/float/hash_spec.rb @@ -0,0 +1,11 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#hash" do + it "is provided" do + 0.0.respond_to?(:hash).should == true + end + + it "is stable" do + 1.0.hash.should == 1.0.hash + end +end diff --git a/spec/ruby/core/float/infinite_spec.rb b/spec/ruby/core/float/infinite_spec.rb new file mode 100644 index 0000000000..4e31effab7 --- /dev/null +++ b/spec/ruby/core/float/infinite_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#infinite?" do + it "returns nil for finite values" do + 1.0.infinite?.should == nil + end + + it "returns 1 for positive infinity" do + infinity_value.infinite?.should == 1 + end + + it "returns -1 for negative infinity" do + (-infinity_value).infinite?.should == -1 + end + + it "returns nil for NaN" do + nan_value.infinite?.should == nil + end +end diff --git a/spec/ruby/core/float/lt_spec.rb b/spec/ruby/core/float/lt_spec.rb new file mode 100644 index 0000000000..e2e43b0fb7 --- /dev/null +++ b/spec/ruby/core/float/lt_spec.rb @@ -0,0 +1,14 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#<" do + it "returns true if self is less than other" do + (71.3 < 91.8).should == true + (192.6 < -500).should == false + (-0.12 < 0x4fffffff).should == true + end + + it "raises an ArgumentError when given a non-Numeric" do + lambda { 5.0 < "4" }.should raise_error(ArgumentError) + lambda { 5.0 < mock('x') }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/core/float/lte_spec.rb b/spec/ruby/core/float/lte_spec.rb new file mode 100644 index 0000000000..e2e44b2257 --- /dev/null +++ b/spec/ruby/core/float/lte_spec.rb @@ -0,0 +1,15 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#<=" do + it "returns true if self is less than or equal to other" do + (2.0 <= 3.14159).should == true + (-2.7183 <= -24).should == false + (0.0 <= 0.0).should == true + (9_235.9 <= bignum_value).should == true + end + + it "raises an ArgumentError when given a non-Numeric" do + lambda { 5.0 <= "4" }.should raise_error(ArgumentError) + lambda { 5.0 <= mock('x') }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/core/float/magnitude_spec.rb b/spec/ruby/core/float/magnitude_spec.rb new file mode 100644 index 0000000000..042356f4c4 --- /dev/null +++ b/spec/ruby/core/float/magnitude_spec.rb @@ -0,0 +1,5 @@ +require File.expand_path('../shared/abs', __FILE__) + +describe "Float#magnitude" do + it_behaves_like(:float_abs, :magnitude) +end diff --git a/spec/ruby/core/float/minus_spec.rb b/spec/ruby/core/float/minus_spec.rb new file mode 100644 index 0000000000..d5c0d863ed --- /dev/null +++ b/spec/ruby/core/float/minus_spec.rb @@ -0,0 +1,9 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#-" do + it "returns self minus other" do + (9_237_212.5280 - 5_280).should be_close(9231932.528, TOLERANCE) + (2_560_496.1691 - bignum_value).should be_close(-9223372036852215808.000, TOLERANCE) + (5.5 - 5.5).should be_close(0.0,TOLERANCE) + end +end diff --git a/spec/ruby/core/float/modulo_spec.rb b/spec/ruby/core/float/modulo_spec.rb new file mode 100644 index 0000000000..f29e3870da --- /dev/null +++ b/spec/ruby/core/float/modulo_spec.rb @@ -0,0 +1,10 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/modulo', __FILE__) + +describe "Float#%" do + it_behaves_like(:float_modulo, :%) +end + +describe "Float#modulo" do + it_behaves_like(:float_modulo, :modulo) +end diff --git a/spec/ruby/core/float/multiply_spec.rb b/spec/ruby/core/float/multiply_spec.rb new file mode 100644 index 0000000000..14680534c4 --- /dev/null +++ b/spec/ruby/core/float/multiply_spec.rb @@ -0,0 +1,14 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#*" do + it "returns self multiplied by other" do + (4923.98221 * 2).should be_close(9847.96442, TOLERANCE) + (6712.5 * 0.25).should be_close(1678.125, TOLERANCE) + (256.4096 * bignum_value).should be_close(2364961134621118431232.000, TOLERANCE) + end + + it "raises a TypeError when given a non-Numeric" do + lambda { 13.0 * "10" }.should raise_error(TypeError) + lambda { 13.0 * :symbol }.should raise_error(TypeError) + end +end diff --git a/spec/ruby/core/float/nan_spec.rb b/spec/ruby/core/float/nan_spec.rb new file mode 100644 index 0000000000..95a61d8872 --- /dev/null +++ b/spec/ruby/core/float/nan_spec.rb @@ -0,0 +1,9 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#nan?" do + it "returns true if self is not a valid IEEE floating-point number" do + 0.0.nan?.should == false + -1.5.nan?.should == false + nan_value.nan?.should == true + end +end diff --git a/spec/ruby/core/float/next_float_spec.rb b/spec/ruby/core/float/next_float_spec.rb new file mode 100644 index 0000000000..d5a7748a06 --- /dev/null +++ b/spec/ruby/core/float/next_float_spec.rb @@ -0,0 +1,49 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#next_float" do + it "returns a float the smallest possible step greater than the receiver" do + barely_positive = 0.0.next_float + barely_positive.should == 0.0.next_float + + barely_positive.should > 0.0 + barely_positive.should < barely_positive.next_float + + midpoint = barely_positive / 2 + [0.0, barely_positive].should include midpoint + end + + it "returns Float::INFINITY for Float::INFINITY" do + Float::INFINITY.next_float.should == Float::INFINITY + end + + it "steps directly between MAX and INFINITY" do + (-Float::INFINITY).next_float.should == -Float::MAX + Float::MAX.next_float.should == Float::INFINITY + end + + it "steps directly between 1.0 and 1.0 + EPSILON" do + 1.0.next_float.should == 1.0 + Float::EPSILON + end + + it "steps directly between -1.0 and -1.0 + EPSILON/2" do + (-1.0).next_float.should == -1.0 + Float::EPSILON/2 + end + + it "reverses the effect of prev_float for all Floats except INFINITY and +0.0" do + num = -rand + num.prev_float.next_float.should == num + end + + it "returns negative zero when stepping upward from just below zero" do + x = (-0.0).prev_float.next_float + (1/x).should == -Float::INFINITY + end + + it "gives the same result for -0.0 as for +0.0" do + (-0.0).next_float.should == (0.0).next_float + end + + it "returns NAN if NAN was the receiver" do + Float::NAN.next_float.nan?.should == true + end +end diff --git a/spec/ruby/core/float/numerator_spec.rb b/spec/ruby/core/float/numerator_spec.rb new file mode 100644 index 0000000000..9644d01c23 --- /dev/null +++ b/spec/ruby/core/float/numerator_spec.rb @@ -0,0 +1,39 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#numerator" do + before :all do + @numbers = [ + 29871.2722891, + 999.1**99.928888, + -72628191273.22, + 29282.2827, + -2927.00091, + 12.0, + Float::MAX, + ] + end + + it "converts self to a Rational object then returns its numerator" do + @numbers.each do |number| + number.infinite?.should be_nil + number.numerator.should == Rational(number).numerator + end + end + + it "returns 0 for 0.0" do + 0.0.numerator.should == 0 + end + + it "returns NaN for NaN" do + nan_value.numerator.nan?.should be_true + end + + it "returns Infinity for Infinity" do + infinity_value.numerator.infinite?.should == 1 + end + + it "returns -Infinity for -Infinity" do + (-infinity_value).numerator.infinite?.should == -1 + end + +end diff --git a/spec/ruby/core/float/phase_spec.rb b/spec/ruby/core/float/phase_spec.rb new file mode 100644 index 0000000000..95d0053816 --- /dev/null +++ b/spec/ruby/core/float/phase_spec.rb @@ -0,0 +1,5 @@ +require File.expand_path('../../../shared/complex/float/arg', __FILE__) + +describe "Float#phase" do + it_behaves_like :float_arg, :phase +end diff --git a/spec/ruby/core/float/plus_spec.rb b/spec/ruby/core/float/plus_spec.rb new file mode 100644 index 0000000000..a49124d303 --- /dev/null +++ b/spec/ruby/core/float/plus_spec.rb @@ -0,0 +1,9 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#+" do + it "returns self plus other" do + (491.213 + 2).should be_close(493.213, TOLERANCE) + (9.99 + bignum_value).should be_close(9223372036854775808.000, TOLERANCE) + (1001.99 + 5.219).should be_close(1007.209, TOLERANCE) + end +end diff --git a/spec/ruby/core/float/prev_float_spec.rb b/spec/ruby/core/float/prev_float_spec.rb new file mode 100644 index 0000000000..e07d78c44c --- /dev/null +++ b/spec/ruby/core/float/prev_float_spec.rb @@ -0,0 +1,49 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#prev_float" do + it "returns a float the smallest possible step smaller than the receiver" do + barely_negative = 0.0.prev_float + barely_negative.should == 0.0.prev_float + + barely_negative.should < 0.0 + barely_negative.should > barely_negative.prev_float + + midpoint = barely_negative / 2 + [0.0, barely_negative].should include midpoint + end + + it "returns -Float::INFINITY for -Float::INFINITY" do + (-Float::INFINITY).prev_float.should == -Float::INFINITY + end + + it "steps directly between MAX and INFINITY" do + Float::INFINITY.prev_float.should == Float::MAX + (-Float::MAX).prev_float.should == -Float::INFINITY + end + + it "steps directly between 1.0 and 1.0 - EPSILON/2" do + 1.0.prev_float.should == 1.0 - Float::EPSILON/2 + end + + it "steps directly between -1.0 and -1.0 - EPSILON" do + (-1.0).prev_float.should == -1.0 - Float::EPSILON + end + + it "reverses the effect of next_float for all Floats except -INFINITY and -0.0" do + num = rand + num.next_float.prev_float.should == num + end + + it "returns positive zero when stepping downward from just above zero" do + x = 0.0.next_float.prev_float + (1/x).should == Float::INFINITY + end + + it "gives the same result for -0.0 as for +0.0" do + (0.0).prev_float.should == (-0.0).prev_float + end + + it "returns NAN if NAN was the receiver" do + Float::NAN.prev_float.nan?.should == true + end +end diff --git a/spec/ruby/core/float/quo_spec.rb b/spec/ruby/core/float/quo_spec.rb new file mode 100644 index 0000000000..dcda8f5f3b --- /dev/null +++ b/spec/ruby/core/float/quo_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/quo', __FILE__) + +describe "Float#quo" do + it_behaves_like :float_quo, :quo +end diff --git a/spec/ruby/core/float/rationalize_spec.rb b/spec/ruby/core/float/rationalize_spec.rb new file mode 100644 index 0000000000..541080c48b --- /dev/null +++ b/spec/ruby/core/float/rationalize_spec.rb @@ -0,0 +1,43 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#rationalize" do + it "returns self as a simplified Rational with no argument" do + (3382729202.92822).rationalize.should == Rational(4806858197361, 1421) + end + + # FIXME: These specs need reviewing by somebody familiar with the + # algorithm used by #rationalize + it "simplifies self to the degree specified by a Rational argument" do + f = 0.3 + f.rationalize(Rational(1,10)).should == Rational(1,3) + f.rationalize(Rational(-1,10)).should == Rational(1,3) + + f = -f + f.rationalize(Rational(1,10)).should == Rational(-1,3) + f.rationalize(Rational(-1,10)).should == Rational(-1,3) + + end + + it "simplifies self to the degree specified by a Float argument" do + f = 0.3 + f.rationalize(0.05).should == Rational(1,3) + f.rationalize(0.001).should == Rational(3, 10) + + f = -f + f.rationalize(0.05).should == Rational(-1,3) + f.rationalize(0.001).should == Rational(-3,10) + end + + it "raises a FloatDomainError for Infinity" do + lambda {infinity_value.rationalize}.should raise_error(FloatDomainError) + end + + it "raises a FloatDomainError for NaN" do + lambda { nan_value.rationalize }.should raise_error(FloatDomainError) + end + + it "raises ArgumentError when passed more than one argument" do + lambda { 0.3.rationalize(0.1, 0.1) }.should raise_error(ArgumentError) + lambda { 0.3.rationalize(0.1, 0.1, 2) }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/core/float/round_spec.rb b/spec/ruby/core/float/round_spec.rb new file mode 100644 index 0000000000..46d23b36d0 --- /dev/null +++ b/spec/ruby/core/float/round_spec.rb @@ -0,0 +1,87 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#round" do + it "returns the nearest Integer" do + 5.5.round.should == 6 + 0.4.round.should == 0 + 0.6.round.should == 1 + -1.4.round.should == -1 + -2.8.round.should == -3 + 0.0.round.should == 0 + end + + platform_is_not :mingw32 do + it "returns the nearest Integer for Float near the limit" do + 0.49999999999999994.round.should == 0 + -0.49999999999999994.round.should == 0 + end + end + + it "raises FloatDomainError for exceptional values" do + lambda { (+infinity_value).round }.should raise_error(FloatDomainError) + lambda { (-infinity_value).round }.should raise_error(FloatDomainError) + lambda { nan_value.round }.should raise_error(FloatDomainError) + end + + it "rounds self to an optionally given precision" do + 5.5.round(0).should eql(6) + 5.7.round(1).should eql(5.7) + 1.2345678.round(2).should == 1.23 + 123456.78.round(-2).should eql(123500) # rounded up + -123456.78.round(-2).should eql(-123500) + 12.345678.round(3.999).should == 12.346 + end + + it "returns zero when passed a negative argument with magitude greater the magitude of the whole number portion of the Float" do + 0.8346268.round(-1).should eql(0) + end + + it "raises a TypeError when its argument can not be converted to an Integer" do + lambda { 1.0.round("4") }.should raise_error(TypeError) + lambda { 1.0.round(nil) }.should raise_error(TypeError) + end + + it "raises FloatDomainError for exceptional values when passed a non-positive precision" do + lambda { Float::INFINITY.round( 0) }.should raise_error(FloatDomainError) + lambda { Float::INFINITY.round(-2) }.should raise_error(FloatDomainError) + lambda { (-Float::INFINITY).round( 0) }.should raise_error(FloatDomainError) + lambda { (-Float::INFINITY).round(-2) }.should raise_error(FloatDomainError) + end + + it "raises RangeError for NAN when passed a non-positive precision" do + lambda { Float::NAN.round(0) }.should raise_error(RangeError) + lambda { Float::NAN.round(-2) }.should raise_error(RangeError) + end + + it "returns self for exceptional values when passed a non-negative precision" do + Float::INFINITY.round(2).should == Float::INFINITY + (-Float::INFINITY).round(2).should == -Float::INFINITY + Float::NAN.round(2).should be_nan + end + + # redmine:5227 + it "works for corner cases" do + 42.0.round(308).should eql(42.0) + 1.0e307.round(2).should eql(1.0e307) + end + + # redmine:5271 + it "returns rounded values for big argument" do + 0.42.round(2.0**30).should == 0.42 + end + + it "returns big values rounded to nearest" do + +2.5e20.round(-20).should eql( +3 * 10 ** 20 ) + -2.5e20.round(-20).should eql( -3 * 10 ** 20 ) + end + + # redmine #5272 + it "returns rounded values for big values" do + +2.4e20.round(-20).should eql( +2 * 10 ** 20 ) + -2.4e20.round(-20).should eql( -2 * 10 ** 20 ) + +2.5e200.round(-200).should eql( +3 * 10 ** 200 ) + +2.4e200.round(-200).should eql( +2 * 10 ** 200 ) + -2.5e200.round(-200).should eql( -3 * 10 ** 200 ) + -2.4e200.round(-200).should eql( -2 * 10 ** 200 ) + end +end diff --git a/spec/ruby/core/float/shared/abs.rb b/spec/ruby/core/float/shared/abs.rb new file mode 100644 index 0000000000..c59198bfe2 --- /dev/null +++ b/spec/ruby/core/float/shared/abs.rb @@ -0,0 +1,21 @@ +require File.expand_path('../../../../spec_helper', __FILE__) + +describe :float_abs, shared: true do + it "returns the absolute value" do + -99.1.send(@method).should be_close(99.1, TOLERANCE) + 4.5.send(@method).should be_close(4.5, TOLERANCE) + 0.0.send(@method).should be_close(0.0, TOLERANCE) + end + + it "returns 0.0 if -0.0" do + (-0.0).send(@method).should be_positive_zero + end + + it "returns Infinity if -Infinity" do + (-infinity_value).send(@method).infinite?.should == 1 + end + + it "returns NaN if NaN" do + nan_value.send(@method).nan?.should be_true + end +end diff --git a/spec/ruby/core/float/shared/equal.rb b/spec/ruby/core/float/shared/equal.rb new file mode 100644 index 0000000000..668aa069b5 --- /dev/null +++ b/spec/ruby/core/float/shared/equal.rb @@ -0,0 +1,17 @@ +describe :float_equal, shared: true do + it "returns true if self has the same value as other" do + 1.0.send(@method, 1).should == true + 2.71828.send(@method, 1.428).should == false + -4.2.send(@method, 4.2).should == false + end + + it "calls 'other == self' if coercion fails" do + x = mock('other') + def x.==(other) + 2.0 == other + end + + 1.0.send(@method, x).should == false + 2.0.send(@method, x).should == true + end +end diff --git a/spec/ruby/core/float/shared/modulo.rb b/spec/ruby/core/float/shared/modulo.rb new file mode 100644 index 0000000000..6c423a3a28 --- /dev/null +++ b/spec/ruby/core/float/shared/modulo.rb @@ -0,0 +1,48 @@ +describe :float_modulo, shared: true do + it "returns self modulo other" do + 6543.21.send(@method, 137).should be_close(104.21, TOLERANCE) + 5667.19.send(@method, bignum_value).should be_close(5667.19, TOLERANCE) + 6543.21.send(@method, 137.24).should be_close(92.9299999999996, TOLERANCE) + + -1.0.send(@method, 1).should == 0 + end + + it "returns self when modulus is +Infinity" do + 4.2.send(@method, Float::INFINITY).should == 4.2 + end + + it "returns -Infinity when modulus is -Infinity" do + 4.2.send(@method, -Float::INFINITY).should == -Float::INFINITY + end + + it "returns NaN when called on NaN or Infinities" do + Float::NAN.send(@method, 42).should be_nan + Float::INFINITY.send(@method, 42).should be_nan + (-Float::INFINITY).send(@method, 42).should be_nan + end + + it "returns NaN when modulus is NaN" do + 4.2.send(@method, Float::NAN).should be_nan + end + + it "returns -0.0 when called on -0.0 with a non zero modulus" do + r = (-0.0).send(@method, 42) + r.should == 0 + (1/r).should < 0 + + r = (-0.0).send(@method, Float::INFINITY) + r.should == 0 + (1/r).should < 0 + end + + it "tries to coerce the modulus" do + obj = mock("modulus") + obj.should_receive(:coerce).with(1.25).and_return([1.25, 0.5]) + (1.25 % obj).should == 0.25 + end + + it "raises a ZeroDivisionError if other is zero" do + lambda { 1.0.send(@method, 0) }.should raise_error(ZeroDivisionError) + lambda { 1.0.send(@method, 0.0) }.should raise_error(ZeroDivisionError) + end +end diff --git a/spec/ruby/core/float/shared/quo.rb b/spec/ruby/core/float/shared/quo.rb new file mode 100644 index 0000000000..afc921a2c1 --- /dev/null +++ b/spec/ruby/core/float/shared/quo.rb @@ -0,0 +1,59 @@ +describe :float_quo, shared: true do + it "performs floating-point division between self and a Fixnum" do + 8.9.send(@method, 7).should == 1.2714285714285716 + end + + it "performs floating-point division between self and a Bignum" do + 8.9.send(@method, 9999999999999**9).should == 8.900000000008011e-117 + end + + it "performs floating-point division between self and a Float" do + 2827.22.send(@method, 872.111111).should == 3.2418116961704433 + end + + it "returns NaN when the argument is NaN" do + -1819.999999.send(@method, nan_value).nan?.should be_true + 11109.1981271.send(@method, nan_value).nan?.should be_true + end + + it "returns Infinity when the argument is 0.0" do + 2827.22.send(@method, 0.0).infinite?.should == 1 + end + + it "returns -Infinity when the argument is 0.0 and self is negative" do + -48229.282.send(@method, 0.0).infinite?.should == -1 + end + + it "returns Infinity when the argument is 0" do + 2827.22.send(@method, 0).infinite?.should == 1 + end + + it "returns -Infinity when the argument is 0 and self is negative" do + -48229.282.send(@method, 0).infinite?.should == -1 + end + + it "returns 0.0 when the argument is Infinity" do + 47292.2821.send(@method, infinity_value).should == 0.0 + end + + it "returns -0.0 when the argument is -Infinity" do + 1.9999918.send(@method, -infinity_value).should == -0.0 + end + + it "performs floating-point division between self and a Rational" do + 74620.09.send(@method, Rational(2,3)).should == 111930.135 + end + + it "performs floating-point division between self and a Complex" do + 74620.09.send(@method, Complex(8,2)).should == Complex( + 8778.834117647059, -2194.7085294117646) + end + + it "raises a TypeError when argument isn't numeric" do + lambda { 27292.2.send(@method, mock('non-numeric')) }.should raise_error(TypeError) + end + + it "raises an ArgumentError when passed multiple arguments" do + lambda { 272.221.send(@method, 6,0.2) }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/core/float/shared/to_i.rb b/spec/ruby/core/float/shared/to_i.rb new file mode 100644 index 0000000000..960295f095 --- /dev/null +++ b/spec/ruby/core/float/shared/to_i.rb @@ -0,0 +1,10 @@ +describe :float_to_i, shared: true do + it "returns self truncated to an Integer" do + 899.2.send(@method).should eql(899) + -1.122256e-45.send(@method).should eql(0) + 5_213_451.9201.send(@method).should eql(5213451) + 1.233450999123389e+12.send(@method).should eql(1233450999123) + -9223372036854775808.1.send(@method).should eql(-9223372036854775808) + 9223372036854775808.1.send(@method).should eql(9223372036854775808) + end +end diff --git a/spec/ruby/core/float/to_f_spec.rb b/spec/ruby/core/float/to_f_spec.rb new file mode 100644 index 0000000000..02666ae7d7 --- /dev/null +++ b/spec/ruby/core/float/to_f_spec.rb @@ -0,0 +1,9 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#to_f" do + it "returns self" do + -500.3.to_f.should == -500.3 + 267.51.to_f.should == 267.51 + 1.1412.to_f.should == 1.1412 + end +end diff --git a/spec/ruby/core/float/to_i_spec.rb b/spec/ruby/core/float/to_i_spec.rb new file mode 100644 index 0000000000..5bf5a1b42a --- /dev/null +++ b/spec/ruby/core/float/to_i_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/to_i', __FILE__) + +describe "Float#to_i" do + it_behaves_like(:float_to_i, :to_i) +end diff --git a/spec/ruby/core/float/to_int_spec.rb b/spec/ruby/core/float/to_int_spec.rb new file mode 100644 index 0000000000..ba31ebc168 --- /dev/null +++ b/spec/ruby/core/float/to_int_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/to_i', __FILE__) + +describe "Float#to_int" do + it_behaves_like(:float_to_i, :to_int) +end diff --git a/spec/ruby/core/float/to_r_spec.rb b/spec/ruby/core/float/to_r_spec.rb new file mode 100644 index 0000000000..a0f5cd9700 --- /dev/null +++ b/spec/ruby/core/float/to_r_spec.rb @@ -0,0 +1,5 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#to_r" do + it "needs to be reviewed for spec completeness" +end diff --git a/spec/ruby/core/float/to_s_spec.rb b/spec/ruby/core/float/to_s_spec.rb new file mode 100644 index 0000000000..e76cfc1b7e --- /dev/null +++ b/spec/ruby/core/float/to_s_spec.rb @@ -0,0 +1,120 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#to_s" do + it "returns 'NaN' for NaN" do + nan_value().to_s.should == 'NaN' + end + + it "returns 'Infinity' for positive infinity" do + infinity_value().to_s.should == 'Infinity' + end + + it "returns '-Infinity' for negative infinity" do + (-infinity_value()).to_s.should == '-Infinity' + end + + it "returns '0.0' for 0.0" do + 0.0.to_s.should == "0.0" + end + + platform_is_not :openbsd do + it "emits '-' for -0.0" do + -0.0.to_s.should == "-0.0" + end + end + + it "emits a '-' for negative values" do + -3.14.to_s.should == "-3.14" + end + + it "emits a trailing '.0' for a whole number" do + 50.0.to_s.should == "50.0" + end + + it "emits a trailing '.0' for the mantissa in e format" do + 1.0e20.to_s.should == "1.0e+20" + end + + it "uses non-e format for a positive value with fractional part having 5 significant figures" do + 0.0001.to_s.should == "0.0001" + end + + it "uses non-e format for a negative value with fractional part having 5 significant figures" do + -0.0001.to_s.should == "-0.0001" + end + + it "uses e format for a positive value with fractional part having 6 significant figures" do + 0.00001.to_s.should == "1.0e-05" + end + + it "uses e format for a negative value with fractional part having 6 significant figures" do + -0.00001.to_s.should == "-1.0e-05" + end + + it "uses non-e format for a positive value with whole part having 15 significant figures" do + 10000000000000.0.to_s.should == "10000000000000.0" + end + + it "uses non-e format for a negative value with whole part having 15 significant figures" do + -10000000000000.0.to_s.should == "-10000000000000.0" + end + + it "uses non-e format for a positive value with whole part having 16 significant figures" do + 100000000000000.0.to_s.should == "100000000000000.0" + end + + it "uses non-e format for a negative value with whole part having 16 significant figures" do + -100000000000000.0.to_s.should == "-100000000000000.0" + end + + it "uses e format for a positive value with whole part having 18 significant figures" do + 10000000000000000.0.to_s.should == "1.0e+16" + end + + it "uses e format for a negative value with whole part having 18 significant figures" do + -10000000000000000.0.to_s.should == "-1.0e+16" + end + + it "uses non-e format for a positive value with whole part having 17 significant figures" do + 1000000000000000.0.to_s.should == "1.0e+15" + end + + it "uses non-e format for a negative value with whole part having 17 significant figures" do + -1000000000000000.0.to_s.should == "-1.0e+15" + end + + # #3273 + it "outputs the minimal, unique form necessary to recreate the value" do + value = 0.21611564636388508 + string = "0.21611564636388508" + + value.to_s.should == string + string.to_f.should == value + end + + it "outputs the minimal, unique form to represent the value" do + 0.56.to_s.should == "0.56" + end +end + +with_feature :encoding do + describe "Float#to_s" do + before :each do + @internal = Encoding.default_internal + end + + after :each do + Encoding.default_internal = @internal + end + + it "returns a String in US-ASCII encoding when Encoding.default_internal is nil" do + Encoding.default_internal = nil + 1.23.to_s.encoding.should equal(Encoding::US_ASCII) + end + + it "returns a String in US-ASCII encoding when Encoding.default_internal is not nil" do + Encoding.default_internal = Encoding::IBM437 + 5.47.to_s.encoding.should equal(Encoding::US_ASCII) + end + end +end diff --git a/spec/ruby/core/float/truncate_spec.rb b/spec/ruby/core/float/truncate_spec.rb new file mode 100644 index 0000000000..85ee8ef580 --- /dev/null +++ b/spec/ruby/core/float/truncate_spec.rb @@ -0,0 +1,6 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/to_i', __FILE__) + +describe "Float#truncate" do + it_behaves_like(:float_to_i, :truncate) +end diff --git a/spec/ruby/core/float/uminus_spec.rb b/spec/ruby/core/float/uminus_spec.rb new file mode 100644 index 0000000000..70e2ff0580 --- /dev/null +++ b/spec/ruby/core/float/uminus_spec.rb @@ -0,0 +1,28 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#-@" do + it "negates self" do + (2.221.send(:-@)).should be_close(-2.221, TOLERANCE) + -2.01.should be_close(-2.01,TOLERANCE) + -2_455_999_221.5512.should be_close(-2455999221.5512, TOLERANCE) + (--5.5).should be_close(5.5, TOLERANCE) + -8.551.send(:-@).should be_close(8.551, TOLERANCE) + end + + it "negates self at Float boundaries" do + Float::MAX.send(:-@).should be_close(0.0 - Float::MAX, TOLERANCE) + Float::MIN.send(:-@).should be_close(0.0 - Float::MIN, TOLERANCE) + end + + it "returns negative infinity for positive infinity" do + infinity_value.send(:-@).infinite?.should == -1 + end + + it "returns positive infinity for negative infinity" do + (-infinity_value).send(:-@).infinite?.should == 1 + end + + it "returns NaN for NaN" do + nan_value.send(:-@).nan?.should == true + end +end diff --git a/spec/ruby/core/float/uplus_spec.rb b/spec/ruby/core/float/uplus_spec.rb new file mode 100644 index 0000000000..75f18191dd --- /dev/null +++ b/spec/ruby/core/float/uplus_spec.rb @@ -0,0 +1,9 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#+@" do + it "returns the same value with same sign (twos complement)" do + 34.56.send(:+@).should == 34.56 + -34.56.send(:+@).should == -34.56 + 0.0.send(:+@).should eql(0.0) + end +end diff --git a/spec/ruby/core/float/zero_spec.rb b/spec/ruby/core/float/zero_spec.rb new file mode 100644 index 0000000000..3a67551a07 --- /dev/null +++ b/spec/ruby/core/float/zero_spec.rb @@ -0,0 +1,9 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Float#zero?" do + it "returns true if self is 0.0" do + 0.0.zero?.should == true + 1.0.zero?.should == false + -1.0.zero?.should == false + end +end |