1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/core/rational/divmod_spec.rb b/spec/ruby/core/rational/divmod_spec.rb
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index 0000000000..68f8ecfd2d
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+++ b/spec/ruby/core/rational/divmod_spec.rb
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+require_relative "../../spec_helper"
+
+describe "Rational#divmod when passed a Rational" do
+  it "returns the quotient as Integer and the remainder as Rational" do
+    Rational(7, 4).divmod(Rational(1, 2)).should.eql?([3, Rational(1, 4)])
+    Rational(7, 4).divmod(Rational(-1, 2)).should.eql?([-4, Rational(-1, 4)])
+    Rational(0, 4).divmod(Rational(4, 3)).should.eql?([0, Rational(0, 1)])
+
+    Rational(bignum_value, 4).divmod(Rational(4, 3)).should.eql?([3458764513820540928, Rational(0, 1)])
+  end
+
+  it "raises a ZeroDivisionError when passed a Rational with a numerator of 0" do
+    -> { Rational(7, 4).divmod(Rational(0, 3)) }.should.raise(ZeroDivisionError)
+  end
+end
+
+describe "Rational#divmod when passed an Integer" do
+  it "returns the quotient as Integer and the remainder as Rational" do
+    Rational(7, 4).divmod(2).should.eql?([0, Rational(7, 4)])
+    Rational(7, 4).divmod(-2).should.eql?([-1, Rational(-1, 4)])
+
+    Rational(bignum_value, 4).divmod(3).should.eql?([1537228672809129301, Rational(1, 1)])
+  end
+
+  it "raises a ZeroDivisionError when passed 0" do
+    -> { Rational(7, 4).divmod(0) }.should.raise(ZeroDivisionError)
+  end
+end
+
+describe "Rational#divmod when passed a Float" do
+  it "returns the quotient as Integer and the remainder as Float" do
+    Rational(7, 4).divmod(0.5).should.eql?([3, 0.25])
+  end
+
+  it "returns the quotient as Integer and the remainder as Float" do
+    Rational(7, 4).divmod(-0.5).should.eql?([-4, -0.25])
+  end
+
+  it "raises a ZeroDivisionError when passed 0" do
+    -> { Rational(7, 4).divmod(0.0) }.should.raise(ZeroDivisionError)
+  end
+end