require_relative 'spec_helper' load_extension("numeric") describe "CApiNumericSpecs" do before :each do @s = CApiNumericSpecs.new end describe "NUM2INT" do it "raises a TypeError if passed nil" do -> { @s.NUM2INT(nil) }.should raise_error(TypeError) end it "converts a Float" do @s.NUM2INT(4.2).should == 4 end it "converts a Bignum" do @s.NUM2INT(0x7fff_ffff).should == 0x7fff_ffff end it "converts a Fixnum" do @s.NUM2INT(5).should == 5 end it "converts -1 to an signed number" do @s.NUM2INT(-1).should == -1 end it "converts a negative Bignum into an signed number" do @s.NUM2INT(-2147442171).should == -2147442171 end it "raises a RangeError if the value is more than 32bits" do -> { @s.NUM2INT(0xffff_ffff+1) }.should raise_error(RangeError) end it "calls #to_int to coerce the value" do obj = mock("number") obj.should_receive(:to_int).and_return(2) @s.NUM2INT(obj).should == 2 end end describe "NUM2UINT" do it "raises a TypeError if passed nil" do -> { @s.NUM2UINT(nil) }.should raise_error(TypeError) end it "converts a Float" do @s.NUM2UINT(4.2).should == 4 end it "converts a Bignum" do @s.NUM2UINT(0xffff_ffff).should == 0xffff_ffff end it "converts a Fixnum" do @s.NUM2UINT(5).should == 5 end it "converts a negative number to the complement" do @s.NUM2UINT(-1).should == 4294967295 end it "converts a signed int value to the complement" do @s.NUM2UINT(-0x8000_0000).should == 2147483648 end it "raises a RangeError if the value is more than 32bits" do -> { @s.NUM2UINT(0xffff_ffff+1) }.should raise_error(RangeError) end it "raises a RangeError if the value is less than 32bits negative" do -> { @s.NUM2UINT(-0x8000_0000-1) }.should raise_error(RangeError) end it "raises a RangeError if the value is more than 64bits" do -> do @s.NUM2UINT(0xffff_ffff_ffff_ffff+1) end.should raise_error(RangeError) end it "calls #to_int to coerce the value" do obj = mock("number") obj.should_receive(:to_int).and_return(2) @s.NUM2UINT(obj).should == 2 end end describe "NUM2LONG" do it "raises a TypeError if passed nil" do -> { @s.NUM2LONG(nil) }.should raise_error(TypeError) end it "converts a Float" do @s.NUM2LONG(4.2).should == 4 end it "converts a Bignum" do @s.NUM2LONG(0x7fff_ffff).should == 0x7fff_ffff end it "converts a Fixnum" do @s.NUM2LONG(5).should == 5 end platform_is wordsize: 32 do it "converts -1 to an signed number" do @s.NUM2LONG(-1).should == -1 end it "converts a negative Bignum into an signed number" do @s.NUM2LONG(-2147442171).should == -2147442171 end it "raises a RangeError if the value is more than 32bits" do -> { @s.NUM2LONG(0xffff_ffff+1) }.should raise_error(RangeError) end end platform_is wordsize: 64 do it "converts -1 to an signed number" do @s.NUM2LONG(-1).should == -1 end it "converts a negative Bignum into an signed number" do @s.NUM2LONG(-9223372036854734331).should == -9223372036854734331 end it "raises a RangeError if the value is more than 64bits" do -> do @s.NUM2LONG(0xffff_ffff_ffff_ffff+1) end.should raise_error(RangeError) end end it "calls #to_int to coerce the value" do obj = mock("number") obj.should_receive(:to_int).and_return(2) @s.NUM2LONG(obj).should == 2 end end describe "NUM2SHORT" do it "raises a TypeError if passed nil" do -> { @s.NUM2SHORT(nil) }.should raise_error(TypeError) end it "converts a Float" do @s.NUM2SHORT(4.2).should == 4 end it "converts a Fixnum" do @s.NUM2SHORT(5).should == 5 end it "converts -1 to an signed number" do @s.NUM2SHORT(-1).should == -1 end it "raises a RangeError if the value is more than 32bits" do -> { @s.NUM2SHORT(0xffff_ffff+1) }.should raise_error(RangeError) end it "calls #to_int to coerce the value" do obj = mock("number") obj.should_receive(:to_int).and_return(2) @s.NUM2SHORT(obj).should == 2 end end describe "INT2NUM" do it "raises a TypeError if passed nil" do -> { @s.INT2NUM(nil) }.should raise_error(TypeError) end it "converts a Float" do @s.INT2NUM(4.2).should == 4 end it "raises a RangeError when passed a Bignum" do -> { @s.INT2NUM(bignum_value) }.should raise_error(RangeError) end it "converts a Fixnum" do @s.INT2NUM(5).should == 5 end it "converts a negative Fixnum" do @s.INT2NUM(-11).should == -11 end end describe "NUM2ULONG" do it "raises a TypeError if passed nil" do -> { @s.NUM2ULONG(nil) }.should raise_error(TypeError) end it "converts a Float" do @s.NUM2ULONG(4.2).should == 4 end it "converts a Bignum" do @s.NUM2ULONG(0xffff_ffff).should == 0xffff_ffff end it "converts a Fixnum" do @s.NUM2ULONG(5).should == 5 end platform_is wordsize: 32 do it "converts -1 to an unsigned number" do @s.NUM2ULONG(-1).should == 4294967295 end it "converts a negative Bignum into an unsigned number" do @s.NUM2ULONG(-2147442171).should == 2147525125 end it "converts positive Bignums if the values is less than 64bits" do @s.NUM2ULONG(0xffff_ffff).should == 0xffff_ffff @s.NUM2ULONG(2**30).should == 2**30 @s.NUM2ULONG(fixnum_max+1).should == fixnum_max+1 @s.NUM2ULONG(fixnum_max).should == fixnum_max end it "raises a RangeError if the value is more than 32bits" do -> { @s.NUM2ULONG(0xffff_ffff+1) }.should raise_error(RangeError) end end platform_is wordsize: 64 do it "converts -1 to an unsigned number" do @s.NUM2ULONG(-1).should == 18446744073709551615 end it "converts a negative Bignum into an unsigned number" do @s.NUM2ULONG(-9223372036854734331).should == 9223372036854817285 end it "converts positive Bignums if the values is less than 64bits" do @s.NUM2ULONG(0xffff_ffff_ffff_ffff).should == 0xffff_ffff_ffff_ffff @s.NUM2ULONG(2**62).should == 2**62 @s.NUM2ULONG(fixnum_max+1).should == fixnum_max+1 @s.NUM2ULONG(fixnum_max).should == fixnum_max end it "raises a RangeError if the value is more than 64bits" do -> do @s.NUM2ULONG(0xffff_ffff_ffff_ffff+1) end.should raise_error(RangeError) end end it "calls #to_int to coerce the value" do obj = mock("number") obj.should_receive(:to_int).and_return(2) @s.NUM2ULONG(obj).should == 2 end end describe "rb_Integer" do it "creates an Integer from a String" do i = @s.rb_Integer("8675309") i.should == 8675309 end end describe "rb_ll2inum" do it "creates a Fixnum from a small signed long long" do i = @s.rb_ll2inum_14() i.should == 14 end end describe "rb_ull2inum" do it "creates a Fixnum from a small unsigned long long" do i = @s.rb_ull2inum_14() i.should == 14 end it "creates a positive Bignum from a negative long long" do i = @s.rb_ull2inum_n14() i.should == (2 ** (@s.size_of_long_long * 8) - 14) end end describe "rb_int2inum" do it "creates a Fixnum from a long" do i = @s.rb_int2inum_14() i.should == 14 end end describe "rb_uint2inum" do it "creates a Fixnum from a long" do i = @s.rb_uint2inum_14() i.should == 14 end it "creates a positive Bignum from a negative long" do i = @s.rb_uint2inum_n14() i.should == (2 ** (@s.size_of_VALUE * 8) - 14) end end describe "NUM2DBL" do it "raises a TypeError if passed nil" do -> { @s.NUM2DBL(nil) }.should raise_error(TypeError) end it "raises a TypeError if passed a String" do -> { @s.NUM2DBL("1.2") }.should raise_error(TypeError) end it "converts a Float" do @s.NUM2DBL(4.2).should == 4.2 end it "converts a Bignum" do @s.NUM2DBL(2**70).should == (2**70).to_f end it "converts a Fixnum" do @s.NUM2DBL(5).should == 5.0 end it "calls #to_f to coerce the value" do obj = mock("number") obj.should_receive(:to_f).and_return(2.0) @s.NUM2DBL(obj).should == 2.0 end end describe "NUM2CHR" do it "returns the first character of a String" do @s.NUM2CHR("Abc").should == 65 end it "returns the least significant byte of an Integer" do @s.NUM2CHR(0xa7c).should == 0x07c end it "returns the least significant byte of a Float converted to an Integer" do @s.NUM2CHR(0xa7c.to_f).should == 0x07c end it "raises a TypeError when passed an empty String" do -> { @s.NUM2CHR("") }.should raise_error(TypeError) end end describe "rb_num_zerodiv" do it "raises a RuntimeError" do -> { @s.rb_num_zerodiv() }.should raise_error(ZeroDivisionError, 'divided by 0') end end describe "rb_cmpint" do it "returns a Fixnum if passed one" do @s.rb_cmpint(1, 2).should == 1 end it "uses > to check if the value is greater than 1" do m = mock("number") m.should_receive(:>).and_return(true) @s.rb_cmpint(m, 4).should == 1 end it "uses < to check if the value is less than 1" do m = mock("number") m.should_receive(:>).and_return(false) m.should_receive(:<).and_return(true) @s.rb_cmpint(m, 4).should == -1 end it "returns 0 if < and > are false" do m = mock("number") m.should_receive(:>).and_return(false) m.should_receive(:<).and_return(false) @s.rb_cmpint(m, 4).should == 0 end it "raises an ArgumentError when passed nil" do -> { @s.rb_cmpint(nil, 4) }.should raise_error(ArgumentError) end end describe "rb_num_coerce_bin" do it "calls #coerce on the first argument" do obj = mock("rb_num_coerce_bin") obj.should_receive(:coerce).with(2).and_return([1, 2]) @s.rb_num_coerce_bin(2, obj, :+).should == 3 end it "calls the specified method on the first argument returned by #coerce" do obj = mock("rb_num_coerce_bin") obj.should_receive(:coerce).with(2).and_return([obj, 2]) obj.should_receive(:+).with(2).and_return(3) @s.rb_num_coerce_bin(2, obj, :+).should == 3 end it "raises a TypeError if #coerce does not return an Array" do obj = mock("rb_num_coerce_bin") obj.should_receive(:coerce).with(2).and_return(nil) -> { @s.rb_num_coerce_bin(2, obj, :+) }.should raise_error(TypeError) end end describe "rb_num_coerce_cmp" do it "calls #coerce on the first argument" do obj = mock("rb_num_coerce_cmp") obj.should_receive(:coerce).with(2).and_return([1, 2]) @s.rb_num_coerce_cmp(2, obj, :<=>).should == -1 end it "calls the specified method on the first argument returned by #coerce" do obj = mock("rb_num_coerce_cmp") obj.should_receive(:coerce).with(2).and_return([obj, 2]) obj.should_receive(:<=>).with(2).and_return(-1) @s.rb_num_coerce_cmp(2, obj, :<=>).should == -1 end it "lets the exception go through if #coerce raises an exception" do obj = mock("rb_num_coerce_cmp") obj.should_receive(:coerce).with(2).and_raise(RuntimeError.new("my error")) -> { @s.rb_num_coerce_cmp(2, obj, :<=>) }.should raise_error(RuntimeError, "my error") end it "returns nil if #coerce does not return an Array" do obj = mock("rb_num_coerce_cmp") obj.should_receive(:coerce).with(2).and_return(nil) @s.rb_num_coerce_cmp(2, obj, :<=>).should be_nil end end describe "rb_num_coerce_relop" do it "calls #coerce on the first argument" do obj = mock("rb_num_coerce_relop") obj.should_receive(:coerce).with(2).and_return([1, 2]) @s.rb_num_coerce_relop(2, obj, :<).should be_true end it "calls the specified method on the first argument returned by #coerce" do obj = mock("rb_num_coerce_relop") obj.should_receive(:coerce).with(2).and_return([obj, 2]) obj.should_receive(:<).with(2).and_return(false) @s.rb_num_coerce_relop(2, obj, :<).should be_false end it "raises an ArgumentError if # returns nil" do obj = mock("rb_num_coerce_relop") obj.should_receive(:coerce).with(2).and_return([obj, 2]) obj.should_receive(:<).with(2).and_return(nil) -> { @s.rb_num_coerce_relop(2, obj, :<) }.should raise_error(ArgumentError) end it "raises an ArgumentError if #coerce does not return an Array" do obj = mock("rb_num_coerce_relop") obj.should_receive(:coerce).with(2).and_return(nil) -> { @s.rb_num_coerce_relop(2, obj, :<) }.should raise_error(ArgumentError) end end describe "rb_absint_singlebit_p" do it "returns 1 if absolute value fits into a bit" do @s.rb_absint_singlebit_p(1).should == 1 @s.rb_absint_singlebit_p(2).should == 1 @s.rb_absint_singlebit_p(3).should == 0 @s.rb_absint_singlebit_p(-1).should == 1 @s.rb_absint_singlebit_p(-2).should == 1 @s.rb_absint_singlebit_p(-3).should == 0 @s.rb_absint_singlebit_p(bignum_value).should == 1 @s.rb_absint_singlebit_p(bignum_value(1)).should == 0 @s.rb_absint_singlebit_p(-bignum_value).should == 1 @s.rb_absint_singlebit_p(-bignum_value(1)).should == 0 end end end