1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/core/float/divmod_spec.rb b/spec/ruby/core/float/divmod_spec.rb
new file mode 100644
index 0000000000..174f142c86
--- /dev/null
+++ b/spec/ruby/core/float/divmod_spec.rb
@@ -0,0 +1,43 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Float#divmod" do
+  it "returns an [quotient, modulus] from dividing self by other" do
+    values = 3.14.divmod(2)
+    values[0].should eql(1)
+    values[1].should be_close(1.14, TOLERANCE)
+    values = 2.8284.divmod(3.1415)
+    values[0].should eql(0)
+    values[1].should be_close(2.8284, TOLERANCE)
+    values = -1.0.divmod(bignum_value)
+    values[0].should eql(-1)
+    values[1].should be_close(9223372036854775808.000, TOLERANCE)
+    values = -1.0.divmod(1)
+    values[0].should eql(-1)
+    values[1].should eql(0.0)
+  end
+
+  # Behaviour established as correct in r23953
+  it "raises a FloatDomainError if self is NaN" do
+    lambda { nan_value.divmod(1) }.should raise_error(FloatDomainError)
+  end
+
+  # Behaviour established as correct in r23953
+  it "raises a FloatDomainError if other is NaN" do
+    lambda { 1.divmod(nan_value) }.should raise_error(FloatDomainError)
+  end
+
+  # Behaviour established as correct in r23953
+  it "raises a FloatDomainError if self is Infinity" do
+    lambda { infinity_value.divmod(1) }.should raise_error(FloatDomainError)
+  end
+
+  it "raises a ZeroDivisionError if other is zero" do
+    lambda { 1.0.divmod(0)   }.should raise_error(ZeroDivisionError)
+    lambda { 1.0.divmod(0.0) }.should raise_error(ZeroDivisionError)
+  end
+
+  # redmine #5276"
+  it "returns the correct [quotient, modulus] even for large quotient" do
+    0.59.divmod(7.761021455128987e-11).first.should eql(7602092113)
+  end
+end