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Diffstat (limited to 'spec/rubyspec/core/array/pack/c_spec.rb')
-rw-r--r-- | spec/rubyspec/core/array/pack/c_spec.rb | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/spec/rubyspec/core/array/pack/c_spec.rb b/spec/rubyspec/core/array/pack/c_spec.rb new file mode 100644 index 0000000000..74afa72f56 --- /dev/null +++ b/spec/rubyspec/core/array/pack/c_spec.rb @@ -0,0 +1,75 @@ +# -*- encoding: ascii-8bit -*- + +require File.expand_path('../../../../spec_helper', __FILE__) +require File.expand_path('../../fixtures/classes', __FILE__) +require File.expand_path('../shared/basic', __FILE__) +require File.expand_path('../shared/numeric_basic', __FILE__) + +describe :array_pack_8bit, shared: true do + it "encodes the least significant eight bits of a positive number" do + [ [[49], "1"], + [[0b11111111], "\xFF"], + [[0b100000000], "\x00"], + [[0b100000001], "\x01"] + ].should be_computed_by(:pack, pack_format) + end + + it "encodes the least significant eight bits of a negative number" do + [ [[-1], "\xFF"], + [[-0b10000000], "\x80"], + [[-0b11111111], "\x01"], + [[-0b100000000], "\x00"], + [[-0b100000001], "\xFF"] + ].should be_computed_by(:pack, pack_format) + end + + it "encodes a Float truncated as an Integer" do + [ [[5.2], "\x05"], + [[5.8], "\x05"] + ].should be_computed_by(:pack, pack_format) + end + + it "calls #to_int to convert the pack argument to an Integer" do + obj = mock('to_int') + obj.should_receive(:to_int).and_return(5) + [obj].pack(pack_format).should == "\x05" + end + + it "encodes the number of array elements specified by the count modifier" do + [ [[1, 2, 3], pack_format(3), "\x01\x02\x03"], + [[1, 2, 3], pack_format(2) + pack_format(1), "\x01\x02\x03"] + ].should be_computed_by(:pack) + end + + it "encodes all remaining elements when passed the '*' modifier" do + [1, 2, 3, 4, 5].pack(pack_format('*')).should == "\x01\x02\x03\x04\x05" + end + + it "ignores NULL bytes between directives" do + [1, 2, 3].pack(pack_format("\000", 2)).should == "\x01\x02" + end + + it "ignores spaces between directives" do + [1, 2, 3].pack(pack_format(' ', 2)).should == "\x01\x02" + end +end + +describe "Array#pack with format 'C'" do + it_behaves_like :array_pack_basic, 'C' + it_behaves_like :array_pack_basic_non_float, 'C' + it_behaves_like :array_pack_8bit, 'C' + it_behaves_like :array_pack_arguments, 'C' + it_behaves_like :array_pack_numeric_basic, 'C' + it_behaves_like :array_pack_integer, 'C' + it_behaves_like :array_pack_no_platform, 'C' +end + +describe "Array#pack with format 'c'" do + it_behaves_like :array_pack_basic, 'c' + it_behaves_like :array_pack_basic_non_float, 'c' + it_behaves_like :array_pack_8bit, 'c' + it_behaves_like :array_pack_arguments, 'c' + it_behaves_like :array_pack_numeric_basic, 'c' + it_behaves_like :array_pack_integer, 'c' + it_behaves_like :array_pack_no_platform, 'c' +end |