1 files changed, 97 insertions, 0 deletions
diff --git a/spec/ruby/language/numbers_spec.rb b/spec/ruby/language/numbers_spec.rb
new file mode 100644
index 0000000000..e8c82f09a7
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+++ b/spec/ruby/language/numbers_spec.rb
@@ -0,0 +1,97 @@
+require File.expand_path('../../spec_helper', __FILE__)
+
+describe "A number literal" do
+
+  it "can be a sequence of decimal digits" do
+    435.should == 435
+  end
+
+  it "can have '_' characters between digits" do
+    4_3_5_7.should == 4357
+  end
+
+  it "cannot have a leading underscore" do
+    lambda { eval("_4_2") }.should raise_error(NameError)
+  end
+
+  it "can have a decimal point" do
+    4.35.should == 4.35
+  end
+
+  it "must have a digit before the decimal point" do
+    0.75.should == 0.75
+    lambda { eval(".75")  }.should raise_error(SyntaxError)
+    lambda { eval("-.75") }.should raise_error(SyntaxError)
+  end
+
+  it "can have an exponent" do
+    1.2e-3.should == 0.0012
+  end
+
+  it "can be a sequence of hexadecimal digits with a leading '0x'" do
+    0xffff.should == 65535
+  end
+
+  it "can be a sequence of binary digits with a leading '0x'" do
+    0b01011.should == 11
+  end
+
+  it "can be a sequence of octal digits with a leading '0'" do
+    0377.should == 255
+  end
+
+  it "can be an integer literal with trailing 'r' to represent a Rational" do
+    eval('3r').should == Rational(3, 1)
+    eval('-3r').should == Rational(-3, 1)
+  end
+
+  it "can be an bignum literal with trailing 'r' to represent a Rational" do
+    eval('1111111111111111111111111111111111111111111111r').should == Rational(1111111111111111111111111111111111111111111111, 1)
+    eval('-1111111111111111111111111111111111111111111111r').should == Rational(-1111111111111111111111111111111111111111111111, 1)
+  end
+
+  it "can be a decimal literal with trailing 'r' to represent a Rational" do
+    eval('0.3r').should == Rational(3, 10)
+    eval('-0.3r').should == Rational(-3, 10)
+  end
+
+  it "can be a hexadecimal literal with trailing 'r' to represent a Rational" do
+    eval('0xffr').should == Rational(255, 1)
+    eval('-0xffr').should == Rational(-255, 1)
+  end
+
+  it "can be an octal literal with trailing 'r' to represent a Rational"  do
+    eval('042r').should == Rational(34, 1)
+    eval('-042r').should == Rational(-34, 1)
+  end
+
+  it "can be a binary literal with trailing 'r' to represent a Rational" do
+    eval('0b1111r').should == Rational(15, 1)
+    eval('-0b1111r').should == Rational(-15, 1)
+  end
+
+  it "can be an integer literal with trailing 'i' to represent a Complex" do
+    eval('5i').should == Complex(0, 5)
+    eval('-5i').should == Complex(0, -5)
+  end
+
+  it "can be a decimal literal with trailing 'i' to represent a Complex" do
+    eval('0.6i').should == Complex(0, 0.6)
+    eval('-0.6i').should == Complex(0, -0.6)
+  end
+
+  it "can be a hexadecimal literal with trailing 'i' to represent a Complex" do
+    eval('0xffi').should == Complex(0, 255)
+    eval('-0xffi').should == Complex(0, -255)
+  end
+
+  it "can be a octal literal with trailing 'i' to represent a Complex" do
+    eval("042i").should == Complex(0, 34)
+    eval("-042i").should == Complex(0, -34)
+  end
+
+  it "can be a binary literal with trailing 'i' to represent a Complex" do
+    eval('0b1110i').should == Complex(0, 14)
+    eval('-0b1110i').should == Complex(0, -14)
+  end
+end