1 files changed, 48 insertions, 2 deletions
diff --git a/spec/ruby/core/integer/multiply_spec.rb b/spec/ruby/core/integer/multiply_spec.rb
index cfce2418a4..e5872e6fa0 100644
--- a/spec/ruby/core/integer/multiply_spec.rb
+++ b/spec/ruby/core/integer/multiply_spec.rb
@@ -1,6 +1,52 @@
 require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../shared/arithmetic_exception_in_coerce', __FILE__)
+require File.expand_path('../shared/arithmetic_coerce', __FILE__)
 
 describe "Integer#*" do
-  it_behaves_like :integer_arithmetic_exception_in_coerce, :*
+  ruby_version_is "2.4"..."2.5" do
+    it_behaves_like :integer_arithmetic_coerce_rescue, :*
+  end
+
+  ruby_version_is "2.5" do
+    it_behaves_like :integer_arithmetic_coerce_not_rescue, :*
+  end
+
+  context "fixnum" do
+    it "returns self multiplied by the given Integer" do
+      (4923 * 2).should == 9846
+      (1342177 * 800).should == 1073741600
+      (65536 * 65536).should == 4294967296
+
+      (256 * bignum_value).should == 2361183241434822606848
+      (6712 * 0.25).should == 1678.0
+    end
+
+    it "raises a TypeError when given a non-Integer" do
+      lambda {
+        (obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10)
+        13 * obj
+      }.should raise_error(TypeError)
+      lambda { 13 * "10"    }.should raise_error(TypeError)
+      lambda { 13 * :symbol }.should raise_error(TypeError)
+    end
+  end
+
+  context "bignum" do
+    before :each do
+      @bignum = bignum_value(772)
+    end
+
+    it "returns self multiplied by the given Integer" do
+      (@bignum * (1/bignum_value(0xffff).to_f)).should be_close(1.0, TOLERANCE)
+      (@bignum * (1/bignum_value(0xffff).to_f)).should be_close(1.0, TOLERANCE)
+      (@bignum * 10).should == 92233720368547765800
+      (@bignum * (@bignum - 40)).should == 85070591730234629737795195287525433200
+    end
+
+    it "raises a TypeError when given a non-Integer" do
+      lambda { @bignum * mock('10') }.should raise_error(TypeError)
+      lambda { @bignum * "10" }.should raise_error(TypeError)
+      lambda { @bignum * :symbol }.should raise_error(TypeError)
+    end
+  end
 end
+