diff options
Diffstat (limited to 'spec/ruby/core/string/element_set_spec.rb')
-rw-r--r-- | spec/ruby/core/string/element_set_spec.rb | 612 |
1 files changed, 612 insertions, 0 deletions
diff --git a/spec/ruby/core/string/element_set_spec.rb b/spec/ruby/core/string/element_set_spec.rb new file mode 100644 index 0000000000..fea03607f2 --- /dev/null +++ b/spec/ruby/core/string/element_set_spec.rb @@ -0,0 +1,612 @@ +# -*- encoding: utf-8 -*- +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes.rb', __FILE__) + +# TODO: Add missing String#[]= specs: +# String#[re, idx] = obj + +describe "String#[]= with Fixnum index" do + it "replaces the char at idx with other_str" do + a = "hello" + a[0] = "bam" + a.should == "bamello" + a[-2] = "" + a.should == "bamelo" + end + + it "taints self if other_str is tainted" do + a = "hello" + a[0] = "".taint + a.tainted?.should == true + + a = "hello" + a[0] = "x".taint + a.tainted?.should == true + end + + it "raises an IndexError without changing self if idx is outside of self" do + str = "hello" + + lambda { str[20] = "bam" }.should raise_error(IndexError) + str.should == "hello" + + lambda { str[-20] = "bam" }.should raise_error(IndexError) + str.should == "hello" + + lambda { ""[-1] = "bam" }.should raise_error(IndexError) + end + + # Behaviour verfieid correct by matz in + # http://redmine.ruby-lang.org/issues/show/1750 + it "allows assignment to the zero'th element of an empty String" do + str = "" + str[0] = "bam" + str.should == "bam" + end + + it "raises IndexError if the string index doesn't match a position in the string" do + str = "hello" + lambda { str['y'] = "bam" }.should raise_error(IndexError) + str.should == "hello" + end + + it "raises a RuntimeError when self is frozen" do + a = "hello" + a.freeze + + lambda { a[0] = "bam" }.should raise_error(RuntimeError) + end + + it "calls to_int on index" do + str = "hello" + str[0.5] = "hi " + str.should == "hi ello" + + obj = mock('-1') + obj.should_receive(:to_int).and_return(-1) + str[obj] = "!" + str.should == "hi ell!" + end + + it "calls #to_str to convert other to a String" do + other_str = mock('-test-') + other_str.should_receive(:to_str).and_return("-test-") + + a = "abc" + a[1] = other_str + a.should == "a-test-c" + end + + it "raises a TypeError if other_str can't be converted to a String" do + lambda { "test"[1] = [] }.should raise_error(TypeError) + lambda { "test"[1] = mock('x') }.should raise_error(TypeError) + lambda { "test"[1] = nil }.should raise_error(TypeError) + end + + with_feature :encoding do + it "raises a TypeError if passed a Fixnum replacement" do + lambda { "abc"[1] = 65 }.should raise_error(TypeError) + end + + it "raises an IndexError if the index is greater than character size" do + lambda { "あれ"[4] = "a" }.should raise_error(IndexError) + end + + it "calls #to_int to convert the index" do + index = mock("string element set") + index.should_receive(:to_int).and_return(1) + + str = "あれ" + str[index] = "a" + str.should == "あa" + end + + it "raises a TypeError if #to_int does not return an Fixnum" do + index = mock("string element set") + index.should_receive(:to_int).and_return('1') + + lambda { "abc"[index] = "d" }.should raise_error(TypeError) + end + + it "raises an IndexError if #to_int returns a value out of range" do + index = mock("string element set") + index.should_receive(:to_int).and_return(4) + + lambda { "ab"[index] = "c" }.should raise_error(IndexError) + end + + it "replaces a character with a multibyte character" do + str = "ありがとu" + str[4] = "う" + str.should == "ありがとう" + end + + it "replaces a multibyte character with a character" do + str = "ありがとう" + str[4] = "u" + str.should == "ありがとu" + end + + it "replaces a multibyte character with a multibyte character" do + str = "ありがとお" + str[4] = "う" + str.should == "ありがとう" + end + + it "encodes the String in an encoding compatible with the replacement" do + str = " ".force_encoding Encoding::US_ASCII + rep = [160].pack('C').force_encoding Encoding::ASCII_8BIT + str[0] = rep + str.encoding.should equal(Encoding::ASCII_8BIT) + end + + it "raises an Encoding::CompatibilityError if the replacement encoding is incompatible" do + str = "あれ" + rep = "が".encode Encoding::EUC_JP + lambda { str[0] = rep }.should raise_error(Encoding::CompatibilityError) + end + end +end + +describe "String#[]= with String index" do + it "replaces fewer characters with more characters" do + str = "abcde" + str["cd"] = "ghi" + str.should == "abghie" + end + + it "replaces more characters with fewer characters" do + str = "abcde" + str["bcd"] = "f" + str.should == "afe" + end + + it "replaces characters with no characters" do + str = "abcde" + str["cd"] = "" + str.should == "abe" + end + + it "raises an IndexError if the search String is not found" do + str = "abcde" + lambda { str["g"] = "h" }.should raise_error(IndexError) + end + + with_feature :encoding do + it "replaces characters with a multibyte character" do + str = "ありgaとう" + str["ga"] = "が" + str.should == "ありがとう" + end + + it "replaces multibyte characters with characters" do + str = "ありがとう" + str["が"] = "ga" + str.should == "ありgaとう" + end + + it "replaces multibyte characters with multibyte characters" do + str = "ありがとう" + str["が"] = "か" + str.should == "ありかとう" + end + + it "encodes the String in an encoding compatible with the replacement" do + str = " ".force_encoding Encoding::US_ASCII + rep = [160].pack('C').force_encoding Encoding::ASCII_8BIT + str[" "] = rep + str.encoding.should equal(Encoding::ASCII_8BIT) + end + + it "raises an Encoding::CompatibilityError if the replacement encoding is incompatible" do + str = "あれ" + rep = "が".encode Encoding::EUC_JP + lambda { str["れ"] = rep }.should raise_error(Encoding::CompatibilityError) + end + end +end + +describe "String#[]= with a Regexp index" do + it "replaces the matched text with the rhs" do + str = "hello" + str[/lo/] = "x" + str.should == "helx" + end + + it "raises IndexError if the regexp index doesn't match a position in the string" do + str = "hello" + lambda { str[/y/] = "bam" }.should raise_error(IndexError) + str.should == "hello" + end + + it "calls #to_str to convert the replacement" do + rep = mock("string element set regexp") + rep.should_receive(:to_str).and_return("b") + + str = "abc" + str[/ab/] = rep + str.should == "bc" + end + + it "checks the match before calling #to_str to convert the replacement" do + rep = mock("string element set regexp") + rep.should_not_receive(:to_str) + + lambda { "abc"[/def/] = rep }.should raise_error(IndexError) + end + + describe "with 3 arguments" do + it "calls #to_int to convert the second object" do + ref = mock("string element set regexp ref") + ref.should_receive(:to_int).and_return(1) + + str = "abc" + str[/a(b)/, ref] = "x" + str.should == "axc" + end + + it "raises a TypeError if #to_int does not return a Fixnum" do + ref = mock("string element set regexp ref") + ref.should_receive(:to_int).and_return(nil) + + lambda { "abc"[/a(b)/, ref] = "x" }.should raise_error(TypeError) + end + + it "uses the 2nd of 3 arguments as which capture should be replaced" do + str = "aaa bbb ccc" + str[/a (bbb) c/, 1] = "ddd" + str.should == "aaa ddd ccc" + end + + it "allows the specified capture to be negative and count from the end" do + str = "abcd" + str[/(a)(b)(c)(d)/, -2] = "e" + str.should == "abed" + end + + it "checks the match index before calling #to_str to convert the replacement" do + rep = mock("string element set regexp") + rep.should_not_receive(:to_str) + + lambda { "abc"[/a(b)/, 2] = rep }.should raise_error(IndexError) + end + + it "raises IndexError if the specified capture isn't available" do + str = "aaa bbb ccc" + lambda { str[/a (bbb) c/, 2] = "ddd" }.should raise_error(IndexError) + lambda { str[/a (bbb) c/, -2] = "ddd" }.should raise_error(IndexError) + end + + describe "when the optional capture does not match" do + it "raises an IndexError before setting the replacement" do + str1 = "a b c" + str2 = str1.dup + lambda { str2[/a (b) (Z)?/, 2] = "d" }.should raise_error(IndexError) + str2.should == str1 + end + end + end + + with_feature :encoding do + it "replaces characters with a multibyte character" do + str = "ありgaとう" + str[/ga/] = "が" + str.should == "ありがとう" + end + + it "replaces multibyte characters with characters" do + str = "ありがとう" + str[/が/] = "ga" + str.should == "ありgaとう" + end + + it "replaces multibyte characters with multibyte characters" do + str = "ありがとう" + str[/が/] = "か" + str.should == "ありかとう" + end + + it "encodes the String in an encoding compatible with the replacement" do + str = " ".force_encoding Encoding::US_ASCII + rep = [160].pack('C').force_encoding Encoding::ASCII_8BIT + str[/ /] = rep + str.encoding.should equal(Encoding::ASCII_8BIT) + end + + it "raises an Encoding::CompatibilityError if the replacement encoding is incompatible" do + str = "あれ" + rep = "が".encode Encoding::EUC_JP + lambda { str[/れ/] = rep }.should raise_error(Encoding::CompatibilityError) + end + end +end + +describe "String#[]= with a Range index" do + describe "with an empty replacement" do + it "does not replace a character with a zero-index, zero exclude-end range" do + str = "abc" + str[0...0] = "" + str.should == "abc" + end + + it "does not replace a character with a zero exclude-end range" do + str = "abc" + str[1...1] = "" + str.should == "abc" + end + + it "replaces a character with zero-index, zero non-exclude-end range" do + str = "abc" + str[0..0] = "" + str.should == "bc" + end + + it "replaces a character with a zero non-exclude-end range" do + str = "abc" + str[1..1] = "" + str.should == "ac" + end + end + + it "replaces the contents with a shorter String" do + str = "abcde" + str[0..-1] = "hg" + str.should == "hg" + end + + it "replaces the contents with a longer String" do + str = "abc" + str[0...4] = "uvwxyz" + str.should == "uvwxyz" + end + + it "replaces a partial string" do + str = "abcde" + str[1..3] = "B" + str.should == "aBe" + end + + it "raises a RangeError if negative Range begin is out of range" do + lambda { "abc"[-4..-2] = "x" }.should raise_error(RangeError) + end + + it "raises a RangeError if positive Range begin is greater than String size" do + lambda { "abc"[4..2] = "x" }.should raise_error(RangeError) + end + + it "uses the Range end as an index rather than a count" do + str = "abcdefg" + str[-5..3] = "xyz" + str.should == "abxyzefg" + end + + it "treats a negative out-of-range Range end with a positive Range begin as a zero count" do + str = "abc" + str[1..-4] = "x" + str.should == "axbc" + end + + it "treats a negative out-of-range Range end with a negative Range begin as a zero count" do + str = "abcd" + str[-1..-4] = "x" + str.should == "abcxd" + end + + with_feature :encoding do + it "replaces characters with a multibyte character" do + str = "ありgaとう" + str[2..3] = "が" + str.should == "ありがとう" + end + + it "replaces multibyte characters with characters" do + str = "ありがとう" + str[2...3] = "ga" + str.should == "ありgaとう" + end + + it "replaces multibyte characters by negative indexes" do + str = "ありがとう" + str[-3...-2] = "ga" + str.should == "ありgaとう" + end + + it "replaces multibyte characters with multibyte characters" do + str = "ありがとう" + str[2..2] = "か" + str.should == "ありかとう" + end + + it "deletes a multibyte character" do + str = "ありとう" + str[2..3] = "" + str.should == "あり" + end + + it "inserts a multibyte character" do + str = "ありとう" + str[2...2] = "が" + str.should == "ありがとう" + end + + it "encodes the String in an encoding compatible with the replacement" do + str = " ".force_encoding Encoding::US_ASCII + rep = [160].pack('C').force_encoding Encoding::ASCII_8BIT + str[0..1] = rep + str.encoding.should equal(Encoding::ASCII_8BIT) + end + + it "raises an Encoding::CompatibilityError if the replacement encoding is incompatible" do + str = "あれ" + rep = "が".encode Encoding::EUC_JP + lambda { str[0..1] = rep }.should raise_error(Encoding::CompatibilityError) + end + end +end + +describe "String#[]= with Fixnum index, count" do + it "starts at idx and overwrites count characters before inserting the rest of other_str" do + a = "hello" + a[0, 2] = "xx" + a.should == "xxllo" + a = "hello" + a[0, 2] = "jello" + a.should == "jellollo" + end + + it "counts negative idx values from end of the string" do + a = "hello" + a[-1, 0] = "bob" + a.should == "hellbobo" + a = "hello" + a[-5, 0] = "bob" + a.should == "bobhello" + end + + it "overwrites and deletes characters if count is more than the length of other_str" do + a = "hello" + a[0, 4] = "x" + a.should == "xo" + a = "hello" + a[0, 5] = "x" + a.should == "x" + end + + it "deletes characters if other_str is an empty string" do + a = "hello" + a[0, 2] = "" + a.should == "llo" + end + + it "deletes characters up to the maximum length of the existing string" do + a = "hello" + a[0, 6] = "x" + a.should == "x" + a = "hello" + a[0, 100] = "" + a.should == "" + end + + it "appends other_str to the end of the string if idx == the length of the string" do + a = "hello" + a[5, 0] = "bob" + a.should == "hellobob" + end + + it "taints self if other_str is tainted" do + a = "hello" + a[0, 0] = "".taint + a.tainted?.should == true + + a = "hello" + a[1, 4] = "x".taint + a.tainted?.should == true + end + + it "calls #to_int to convert the index and count objects" do + index = mock("string element set index") + index.should_receive(:to_int).and_return(-4) + + count = mock("string element set count") + count.should_receive(:to_int).and_return(2) + + str = "abcde" + str[index, count] = "xyz" + str.should == "axyzde" + end + + it "raises a TypeError if #to_int for index does not return an Integer" do + index = mock("string element set index") + index.should_receive(:to_int).and_return("1") + + lambda { "abc"[index, 2] = "xyz" }.should raise_error(TypeError) + end + + it "raises a TypeError if #to_int for count does not return an Integer" do + count = mock("string element set count") + count.should_receive(:to_int).and_return("1") + + lambda { "abc"[1, count] = "xyz" }.should raise_error(TypeError) + end + + it "calls #to_str to convert the replacement object" do + r = mock("string element set replacement") + r.should_receive(:to_str).and_return("xyz") + + str = "abcde" + str[2, 2] = r + str.should == "abxyze" + end + + it "raises a TypeError of #to_str does not return a String" do + r = mock("string element set replacement") + r.should_receive(:to_str).and_return(nil) + + lambda { "abc"[1, 1] = r }.should raise_error(TypeError) + end + + it "raises an IndexError if |idx| is greater than the length of the string" do + lambda { "hello"[6, 0] = "bob" }.should raise_error(IndexError) + lambda { "hello"[-6, 0] = "bob" }.should raise_error(IndexError) + end + + it "raises an IndexError if count < 0" do + lambda { "hello"[0, -1] = "bob" }.should raise_error(IndexError) + lambda { "hello"[1, -1] = "bob" }.should raise_error(IndexError) + end + + it "raises a TypeError if other_str is a type other than String" do + lambda { "hello"[0, 2] = nil }.should raise_error(TypeError) + lambda { "hello"[0, 2] = [] }.should raise_error(TypeError) + lambda { "hello"[0, 2] = 33 }.should raise_error(TypeError) + end + + with_feature :encoding do + it "replaces characters with a multibyte character" do + str = "ありgaとう" + str[2, 2] = "が" + str.should == "ありがとう" + end + + it "replaces multibyte characters with characters" do + str = "ありがとう" + str[2, 1] = "ga" + str.should == "ありgaとう" + end + + it "replaces multibyte characters with multibyte characters" do + str = "ありがとう" + str[2, 1] = "か" + str.should == "ありかとう" + end + + it "deletes a multibyte character" do + str = "ありとう" + str[2, 2] = "" + str.should == "あり" + end + + it "inserts a multibyte character" do + str = "ありとう" + str[2, 0] = "が" + str.should == "ありがとう" + end + + it "raises an IndexError if the character index is out of range of a multibyte String" do + lambda { "あれ"[3, 0] = "り" }.should raise_error(IndexError) + end + + it "encodes the String in an encoding compatible with the replacement" do + str = " ".force_encoding Encoding::US_ASCII + rep = [160].pack('C').force_encoding Encoding::ASCII_8BIT + str[0, 1] = rep + str.encoding.should equal(Encoding::ASCII_8BIT) + end + + it "raises an Encoding::CompatibilityError if the replacement encoding is incompatible" do + str = "あれ" + rep = "が".encode Encoding::EUC_JP + lambda { str[0, 1] = rep }.should raise_error(Encoding::CompatibilityError) + end + end +end |