1 files changed, 63 insertions, 0 deletions
diff --git a/spec/ruby/core/numeric/quo_spec.rb b/spec/ruby/core/numeric/quo_spec.rb
new file mode 100644
index 0000000000..66ff019231
--- /dev/null
+++ b/spec/ruby/core/numeric/quo_spec.rb
@@ -0,0 +1,63 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+
+describe "Numeric#quo" do
+  it "returns the result of self divided by the given Integer as a Rational" do
+    5.quo(2).should.eql?(Rational(5,2))
+  end
+
+  it "returns the result of self divided by the given Float as a Float" do
+    2.quo(2.5).should.eql?(0.8)
+  end
+
+  it "returns the result of self divided by the given Bignum as a Float" do
+    45.quo(bignum_value).should be_close(1.04773789668636e-08, TOLERANCE)
+  end
+
+  it "raises a ZeroDivisionError when the given Integer is 0" do
+    -> { 0.quo(0) }.should.raise(ZeroDivisionError)
+    -> { 10.quo(0) }.should.raise(ZeroDivisionError)
+    -> { -10.quo(0) }.should.raise(ZeroDivisionError)
+    -> { bignum_value.quo(0) }.should.raise(ZeroDivisionError)
+    -> { (-bignum_value).quo(0) }.should.raise(ZeroDivisionError)
+  end
+
+  it "calls #to_r to convert the object to a Rational" do
+    obj = NumericSpecs::Subclass.new
+    obj.should_receive(:to_r).and_return(Rational(1))
+
+    obj.quo(19).should == Rational(1, 19)
+  end
+
+  it "raises a TypeError of #to_r does not return a Rational" do
+    obj = NumericSpecs::Subclass.new
+    obj.should_receive(:to_r).and_return(1)
+
+    -> { obj.quo(19) }.should.raise(TypeError)
+  end
+
+  it "raises a TypeError when given a non-Integer" do
+    -> {
+      (obj = mock('x')).should_not_receive(:to_int)
+      13.quo(obj)
+    }.should.raise(TypeError)
+    -> { 13.quo("10")    }.should.raise(TypeError)
+    -> { 13.quo(:symbol) }.should.raise(TypeError)
+  end
+
+  it "returns the result of calling self#/ with other" do
+    obj = NumericSpecs::Subclass.new
+    obj.should_receive(:to_r).and_return(19.quo(20))
+
+    obj.quo(19).should == 1.quo(20)
+  end
+
+  it "raises a ZeroDivisionError if the given argument is zero and not a Float" do
+    -> { 1.quo(0) }.should.raise(ZeroDivisionError)
+  end
+
+  it "returns infinity if the given argument is zero and is a Float" do
+    (1.quo(0.0)).to_s.should == 'Infinity'
+    (-1.quo(0.0)).to_s.should == '-Infinity'
+  end
+end