aboutsummaryrefslogtreecommitdiffstats
path: root/spec/ruby/core/array/pack/x_spec.rb
diff options
context:
space:
mode:
authoreregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-09-20 20:18:52 +0000
committereregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2017-09-20 20:18:52 +0000
commit1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch)
treea3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/core/array/pack/x_spec.rb
parent75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff)
downloadruby-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/array/pack/x_spec.rb')
-rw-r--r--spec/ruby/core/array/pack/x_spec.rb64
1 files changed, 64 insertions, 0 deletions
diff --git a/spec/ruby/core/array/pack/x_spec.rb b/spec/ruby/core/array/pack/x_spec.rb
new file mode 100644
index 0000000000..8d54ab84ee
--- /dev/null
+++ b/spec/ruby/core/array/pack/x_spec.rb
@@ -0,0 +1,64 @@
+# -*- encoding: ascii-8bit -*-
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+require File.expand_path('../shared/basic', __FILE__)
+
+describe "Array#pack with format 'x'" do
+ it_behaves_like :array_pack_basic, 'x'
+ it_behaves_like :array_pack_basic_non_float, 'x'
+ it_behaves_like :array_pack_no_platform, 'x'
+
+ it "adds a NULL byte with an empty array" do
+ [].pack("x").should == "\x00"
+ end
+
+ it "adds a NULL byte without consuming an element" do
+ [1, 2].pack("CxC").should == "\x01\x00\x02"
+ end
+
+ it "is not affected by a previous count modifier" do
+ [].pack("x3x").should == "\x00\x00\x00\x00"
+ end
+
+ it "adds multiple NULL bytes when passed a count modifier" do
+ [].pack("x3").should == "\x00\x00\x00"
+ end
+
+ it "does not add a NULL byte if the count modifier is zero" do
+ [].pack("x0").should == ""
+ end
+
+ it "does not add a NULL byte when passed the '*' modifier" do
+ [].pack("x*").should == ""
+ end
+end
+
+describe "Array#pack with format 'X'" do
+ it_behaves_like :array_pack_basic, 'X'
+ it_behaves_like :array_pack_basic_non_float, 'X'
+ it_behaves_like :array_pack_no_platform, 'X'
+
+ it "reduces the output string by one byte at the point it is encountered" do
+ [1, 2, 3].pack("C2XC").should == "\x01\x03"
+ end
+
+ it "does not consume any elements" do
+ [1, 2, 3].pack("CXC").should == "\x02"
+ end
+
+ it "reduces the output string by multiple bytes when passed a count modifier" do
+ [1, 2, 3, 4, 5].pack("C2X2C").should == "\x03"
+ end
+
+ it "has no affect when passed the '*' modifier" do
+ [1, 2, 3].pack("C2X*C").should == "\x01\x02\x03"
+ end
+
+ it "raises an ArgumentError if the output string is empty" do
+ lambda { [1, 2, 3].pack("XC") }.should raise_error(ArgumentError)
+ end
+
+ it "raises an ArgumentError if the count modifier is greater than the bytes in the string" do
+ lambda { [1, 2, 3].pack("C2X3") }.should raise_error(ArgumentError)
+ end
+end