98 lines
3.0 KiB
Ruby
98 lines
3.0 KiB
Ruby
require File.expand_path('../../spec_helper', __FILE__)
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describe "A number literal" do
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it "can be a sequence of decimal digits" do
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435.should == 435
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end
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it "can have '_' characters between digits" do
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4_3_5_7.should == 4357
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end
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it "cannot have a leading underscore" do
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lambda { eval("_4_2") }.should raise_error(NameError)
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end
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it "can have a decimal point" do
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4.35.should == 4.35
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end
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it "must have a digit before the decimal point" do
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0.75.should == 0.75
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lambda { eval(".75") }.should raise_error(SyntaxError)
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lambda { eval("-.75") }.should raise_error(SyntaxError)
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end
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it "can have an exponent" do
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1.2e-3.should == 0.0012
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end
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it "can be a sequence of hexadecimal digits with a leading '0x'" do
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0xffff.should == 65535
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end
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it "can be a sequence of binary digits with a leading '0x'" do
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0b01011.should == 11
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end
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it "can be a sequence of octal digits with a leading '0'" do
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0377.should == 255
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end
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it "can be an integer literal with trailing 'r' to represent a Rational" do
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eval('3r').should == Rational(3, 1)
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eval('-3r').should == Rational(-3, 1)
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end
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it "can be an bignum literal with trailing 'r' to represent a Rational" do
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eval('1111111111111111111111111111111111111111111111r').should == Rational(1111111111111111111111111111111111111111111111, 1)
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eval('-1111111111111111111111111111111111111111111111r').should == Rational(-1111111111111111111111111111111111111111111111, 1)
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end
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it "can be a decimal literal with trailing 'r' to represent a Rational" do
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eval('0.3r').should == Rational(3, 10)
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eval('-0.3r').should == Rational(-3, 10)
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end
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it "can be a hexadecimal literal with trailing 'r' to represent a Rational" do
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eval('0xffr').should == Rational(255, 1)
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eval('-0xffr').should == Rational(-255, 1)
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end
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it "can be an octal literal with trailing 'r' to represent a Rational" do
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eval('042r').should == Rational(34, 1)
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eval('-042r').should == Rational(-34, 1)
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end
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it "can be a binary literal with trailing 'r' to represent a Rational" do
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eval('0b1111r').should == Rational(15, 1)
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eval('-0b1111r').should == Rational(-15, 1)
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end
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it "can be an integer literal with trailing 'i' to represent a Complex" do
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eval('5i').should == Complex(0, 5)
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eval('-5i').should == Complex(0, -5)
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end
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it "can be a decimal literal with trailing 'i' to represent a Complex" do
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eval('0.6i').should == Complex(0, 0.6)
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eval('-0.6i').should == Complex(0, -0.6)
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end
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it "can be a hexadecimal literal with trailing 'i' to represent a Complex" do
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eval('0xffi').should == Complex(0, 255)
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eval('-0xffi').should == Complex(0, -255)
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end
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it "can be a octal literal with trailing 'i' to represent a Complex" do
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eval("042i").should == Complex(0, 34)
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eval("-042i").should == Complex(0, -34)
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end
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it "can be a binary literal with trailing 'i' to represent a Complex" do
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eval('0b1110i').should == Complex(0, 14)
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eval('-0b1110i').should == Complex(0, -14)
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end
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end
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