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Diffstat (limited to 'spec/ruby/core/array/pack/shared/integer.rb')
-rw-r--r-- | spec/ruby/core/array/pack/shared/integer.rb | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/spec/ruby/core/array/pack/shared/integer.rb b/spec/ruby/core/array/pack/shared/integer.rb new file mode 100644 index 0000000000..0df03bbfd1 --- /dev/null +++ b/spec/ruby/core/array/pack/shared/integer.rb @@ -0,0 +1,381 @@ +# -*- encoding: ascii-8bit -*- + +describe :array_pack_16bit_le, shared: true do + it "encodes the least significant 16 bits of a positive number" do + [ [[0x0000_0021], "\x21\x00"], + [[0x0000_4321], "\x21\x43"], + [[0x0065_4321], "\x21\x43"], + [[0x7865_4321], "\x21\x43"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the least significant 16 bits of a negative number" do + [ [[-0x0000_0021], "\xdf\xff"], + [[-0x0000_4321], "\xdf\xbc"], + [[-0x0065_4321], "\xdf\xbc"], + [[-0x7865_4321], "\xdf\xbc"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes a Float truncated as an Integer" do + [ [[2019902241.2], "\x21\x43"], + [[2019902241.8], "\x21\x43"], + [[-2019902241.2], "\xdf\xbc"], + [[-2019902241.8], "\xdf\xbc"] + ].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(0x1234_5678) + [obj].pack(pack_format()).should == "\x78\x56" + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format(2)) + str.should == "\x78\x65\xcd\xab" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format('*')) + str.should == "\x78\x65\xcd\xab\x21\x43" + end + + it "ignores NULL bytes between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format("\000", 2)) + str.should == "\x78\x65\xcd\xab" + end + + it "ignores spaces between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format(' ', 2)) + str.should == "\x78\x65\xcd\xab" + end +end + +describe :array_pack_16bit_be, shared: true do + it "encodes the least significant 16 bits of a positive number" do + [ [[0x0000_0021], "\x00\x21"], + [[0x0000_4321], "\x43\x21"], + [[0x0065_4321], "\x43\x21"], + [[0x7865_4321], "\x43\x21"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the least significant 16 bits of a negative number" do + [ [[-0x0000_0021], "\xff\xdf"], + [[-0x0000_4321], "\xbc\xdf"], + [[-0x0065_4321], "\xbc\xdf"], + [[-0x7865_4321], "\xbc\xdf"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes a Float truncated as an Integer" do + [ [[2019902241.2], "\x43\x21"], + [[2019902241.8], "\x43\x21"], + [[-2019902241.2], "\xbc\xdf"], + [[-2019902241.8], "\xbc\xdf"] + ].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(0x1234_5678) + [obj].pack(pack_format()).should == "\x56\x78" + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format(2)) + str.should == "\x65\x78\xab\xcd" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format('*')) + str.should == "\x65\x78\xab\xcd\x43\x21" + end + + it "ignores NULL bytes between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format("\000", 2)) + str.should == "\x65\x78\xab\xcd" + end + + it "ignores spaces between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format(' ', 2)) + str.should == "\x65\x78\xab\xcd" + end +end + +describe :array_pack_32bit_le, shared: true do + it "encodes the least significant 32 bits of a positive number" do + [ [[0x0000_0021], "\x21\x00\x00\x00"], + [[0x0000_4321], "\x21\x43\x00\x00"], + [[0x0065_4321], "\x21\x43\x65\x00"], + [[0x7865_4321], "\x21\x43\x65\x78"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the least significant 32 bits of a negative number" do + [ [[-0x0000_0021], "\xdf\xff\xff\xff"], + [[-0x0000_4321], "\xdf\xbc\xff\xff"], + [[-0x0065_4321], "\xdf\xbc\x9a\xff"], + [[-0x7865_4321], "\xdf\xbc\x9a\x87"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes a Float truncated as an Integer" do + [ [[2019902241.2], "\x21\x43\x65\x78"], + [[2019902241.8], "\x21\x43\x65\x78"], + [[-2019902241.2], "\xdf\xbc\x9a\x87"], + [[-2019902241.8], "\xdf\xbc\x9a\x87"] + ].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(0x1234_5678) + [obj].pack(pack_format()).should == "\x78\x56\x34\x12" + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format(2)) + str.should == "\x78\x65\x43\x12\xcd\xab\xf0\xde" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format('*')) + str.should == "\x78\x65\x43\x12\xcd\xab\xf0\xde\x21\x43\x65\x78" + end + + it "ignores NULL bytes between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format("\000", 2)) + str.should == "\x78\x65\x43\x12\xcd\xab\xf0\xde" + end + + it "ignores spaces between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format(' ', 2)) + str.should == "\x78\x65\x43\x12\xcd\xab\xf0\xde" + end +end + +describe :array_pack_32bit_be, shared: true do + it "encodes the least significant 32 bits of a positive number" do + [ [[0x0000_0021], "\x00\x00\x00\x21"], + [[0x0000_4321], "\x00\x00\x43\x21"], + [[0x0065_4321], "\x00\x65\x43\x21"], + [[0x7865_4321], "\x78\x65\x43\x21"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the least significant 32 bits of a negative number" do + [ [[-0x0000_0021], "\xff\xff\xff\xdf"], + [[-0x0000_4321], "\xff\xff\xbc\xdf"], + [[-0x0065_4321], "\xff\x9a\xbc\xdf"], + [[-0x7865_4321], "\x87\x9a\xbc\xdf"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes a Float truncated as an Integer" do + [ [[2019902241.2], "\x78\x65\x43\x21"], + [[2019902241.8], "\x78\x65\x43\x21"], + [[-2019902241.2], "\x87\x9a\xbc\xdf"], + [[-2019902241.8], "\x87\x9a\xbc\xdf"] + ].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(0x1234_5678) + [obj].pack(pack_format()).should == "\x12\x34\x56\x78" + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format(2)) + str.should == "\x12\x43\x65\x78\xde\xf0\xab\xcd" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format('*')) + str.should == "\x12\x43\x65\x78\xde\xf0\xab\xcd\x78\x65\x43\x21" + end + + it "ignores NULL bytes between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format("\000", 2)) + str.should == "\x12\x43\x65\x78\xde\xf0\xab\xcd" + end + + it "ignores spaces between directives" do + str = [0x1243_6578, 0xdef0_abcd].pack(pack_format(' ', 2)) + str.should == "\x12\x43\x65\x78\xde\xf0\xab\xcd" + end +end + +describe :array_pack_32bit_le_platform, shared: true do + it "encodes the least significant 32 bits of a number" do + [ [[0x7865_4321], "\x21\x43\x65\x78"], + [[-0x7865_4321], "\xdf\xbc\x9a\x87"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format(2)) + str.should == "\x78\x65\x43\x12\xcd\xab\xf0\xde" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format('*')) + str.should == "\x78\x65\x43\x12\xcd\xab\xf0\xde\x21\x43\x65\x78" + end + + platform_is wordsize: 64 do + it "encodes the least significant 32 bits of a number that is greater than 32 bits" do + [ [[0xff_7865_4321], "\x21\x43\x65\x78"], + [[-0xff_7865_4321], "\xdf\xbc\x9a\x87"] + ].should be_computed_by(:pack, pack_format()) + end + end +end + +describe :array_pack_32bit_be_platform, shared: true do + it "encodes the least significant 32 bits of a number" do + [ [[0x7865_4321], "\x78\x65\x43\x21"], + [[-0x7865_4321], "\x87\x9a\xbc\xdf"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format(2)) + str.should == "\x12\x43\x65\x78\xde\xf0\xab\xcd" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0x1243_6578, 0xdef0_abcd, 0x7865_4321].pack(pack_format('*')) + str.should == "\x12\x43\x65\x78\xde\xf0\xab\xcd\x78\x65\x43\x21" + end + + platform_is wordsize: 64 do + it "encodes the least significant 32 bits of a number that is greater than 32 bits" do + [ [[0xff_7865_4321], "\x78\x65\x43\x21"], + [[-0xff_7865_4321], "\x87\x9a\xbc\xdf"] + ].should be_computed_by(:pack, pack_format()) + end + end +end + +describe :array_pack_64bit_le, shared: true do + it "encodes the least significant 64 bits of a positive number" do + [ [[0x0000_0000_0000_0021], "\x21\x00\x00\x00\x00\x00\x00\x00"], + [[0x0000_0000_0000_4321], "\x21\x43\x00\x00\x00\x00\x00\x00"], + [[0x0000_0000_0065_4321], "\x21\x43\x65\x00\x00\x00\x00\x00"], + [[0x0000_0000_7865_4321], "\x21\x43\x65\x78\x00\x00\x00\x00"], + [[0x0000_0090_7865_4321], "\x21\x43\x65\x78\x90\x00\x00\x00"], + [[0x0000_ba90_7865_4321], "\x21\x43\x65\x78\x90\xba\x00\x00"], + [[0x00dc_ba90_7865_4321], "\x21\x43\x65\x78\x90\xba\xdc\x00"], + [[0x7edc_ba90_7865_4321], "\x21\x43\x65\x78\x90\xba\xdc\x7e"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the least significant 64 bits of a negative number" do + [ [[-0x0000_0000_0000_0021], "\xdf\xff\xff\xff\xff\xff\xff\xff"], + [[-0x0000_0000_0000_4321], "\xdf\xbc\xff\xff\xff\xff\xff\xff"], + [[-0x0000_0000_0065_4321], "\xdf\xbc\x9a\xff\xff\xff\xff\xff"], + [[-0x0000_0000_7865_4321], "\xdf\xbc\x9a\x87\xff\xff\xff\xff"], + [[-0x0000_0090_7865_4321], "\xdf\xbc\x9a\x87\x6f\xff\xff\xff"], + [[-0x0000_ba90_7865_4321], "\xdf\xbc\x9a\x87\x6f\x45\xff\xff"], + [[-0x00dc_ba90_7865_4321], "\xdf\xbc\x9a\x87\x6f\x45\x23\xff"], + [[-0x7edc_ba90_7865_4321], "\xdf\xbc\x9a\x87\x6f\x45\x23\x81"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes a Float truncated as an Integer" do + [ [[9.14138647331322368e+18], "\x00\x44\x65\x78\x90\xba\xdc\x7e"], + [[-9.14138647331322368e+18], "\x00\xbc\x9a\x87\x6f\x45\x23\x81"] + ].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(0x1234_5678_90ab_cdef) + [obj].pack(pack_format()).should == "\xef\xcd\xab\x90\x78\x56\x34\x12" + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1234_5678_90ab_cdef, + 0xdef0_abcd_3412_7856, + 0x7865_4321_dcba_def0].pack(pack_format(2)) + str.should == "\xef\xcd\xab\x90\x78\x56\x34\x12\x56\x78\x12\x34\xcd\xab\xf0\xde" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0xdef0_abcd_3412_7856, 0x7865_4321_dcba_def0].pack(pack_format('*')) + str.should == "\x56\x78\x12\x34\xcd\xab\xf0\xde\xf0\xde\xba\xdc\x21\x43\x65\x78" + end + + it "ignores NULL bytes between directives" do + str = [0xdef0_abcd_3412_7856, 0x7865_4321_dcba_def0].pack(pack_format("\000", 2)) + str.should == "\x56\x78\x12\x34\xcd\xab\xf0\xde\xf0\xde\xba\xdc\x21\x43\x65\x78" + end + + it "ignores spaces between directives" do + str = [0xdef0_abcd_3412_7856, 0x7865_4321_dcba_def0].pack(pack_format(' ', 2)) + str.should == "\x56\x78\x12\x34\xcd\xab\xf0\xde\xf0\xde\xba\xdc\x21\x43\x65\x78" + end +end + +describe :array_pack_64bit_be, shared: true do + it "encodes the least significant 64 bits of a positive number" do + [ [[0x0000_0000_0000_0021], "\x00\x00\x00\x00\x00\x00\x00\x21"], + [[0x0000_0000_0000_4321], "\x00\x00\x00\x00\x00\x00\x43\x21"], + [[0x0000_0000_0065_4321], "\x00\x00\x00\x00\x00\x65\x43\x21"], + [[0x0000_0000_7865_4321], "\x00\x00\x00\x00\x78\x65\x43\x21"], + [[0x0000_0090_7865_4321], "\x00\x00\x00\x90\x78\x65\x43\x21"], + [[0x0000_ba90_7865_4321], "\x00\x00\xba\x90\x78\x65\x43\x21"], + [[0x00dc_ba90_7865_4321], "\x00\xdc\xba\x90\x78\x65\x43\x21"], + [[0x7edc_ba90_7865_4321], "\x7e\xdc\xba\x90\x78\x65\x43\x21"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes the least significant 64 bits of a negative number" do + [ [[-0x0000_0000_0000_0021], "\xff\xff\xff\xff\xff\xff\xff\xdf"], + [[-0x0000_0000_0000_4321], "\xff\xff\xff\xff\xff\xff\xbc\xdf"], + [[-0x0000_0000_0065_4321], "\xff\xff\xff\xff\xff\x9a\xbc\xdf"], + [[-0x0000_0000_7865_4321], "\xff\xff\xff\xff\x87\x9a\xbc\xdf"], + [[-0x0000_0090_7865_4321], "\xff\xff\xff\x6f\x87\x9a\xbc\xdf"], + [[-0x0000_ba90_7865_4321], "\xff\xff\x45\x6f\x87\x9a\xbc\xdf"], + [[-0x00dc_ba90_7865_4321], "\xff\x23\x45\x6f\x87\x9a\xbc\xdf"], + [[-0x7edc_ba90_7865_4321], "\x81\x23\x45\x6f\x87\x9a\xbc\xdf"] + ].should be_computed_by(:pack, pack_format()) + end + + it "encodes a Float truncated as an Integer" do + [ [[9.14138647331322368e+18], "\x7e\xdc\xba\x90\x78\x65\x44\x00"], + [[-9.14138647331322368e+18], "\x81\x23\x45\x6f\x87\x9a\xbc\x00"] + ].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(0x1234_5678_90ab_cdef) + [obj].pack(pack_format()).should == "\x12\x34\x56\x78\x90\xab\xcd\xef" + end + + it "encodes the number of array elements specified by the count modifier" do + str = [0x1234_5678_90ab_cdef, + 0xdef0_abcd_3412_7856, + 0x7865_4321_dcba_def0].pack(pack_format(2)) + str.should == "\x12\x34\x56\x78\x90\xab\xcd\xef\xde\xf0\xab\xcd\x34\x12\x78\x56" + end + + it "encodes all remaining elements when passed the '*' modifier" do + str = [0xdef0_abcd_3412_7856, 0x7865_4321_dcba_def0].pack(pack_format('*')) + str.should == "\xde\xf0\xab\xcd\x34\x12\x78\x56\x78\x65\x43\x21\xdc\xba\xde\xf0" + end + + it "ignores NULL bytes between directives" do + str = [0xdef0_abcd_3412_7856, 0x7865_4321_dcba_def0].pack(pack_format("\000", 2)) + str.should == "\xde\xf0\xab\xcd\x34\x12\x78\x56\x78\x65\x43\x21\xdc\xba\xde\xf0" + end + + it "ignores spaces between directives" do + str = [0xdef0_abcd_3412_7856, 0x7865_4321_dcba_def0].pack(pack_format(' ', 2)) + str.should == "\xde\xf0\xab\xcd\x34\x12\x78\x56\x78\x65\x43\x21\xdc\xba\xde\xf0" + end +end |