Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 73 insertions, 0 deletions

diff --git a/spec/ruby/core/bignum/left_shift_spec.rb b/spec/ruby/core/bignum/left_shift_spec.rb
new file mode 100644
index 0000000000..364f51b708
--- /dev/null
+++ b/spec/ruby/core/bignum/left_shift_spec.rb
@@ -0,0 +1,73 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Bignum#<< with n << m" do
+  before :each do
+    @bignum = bignum_value * 16
+  end
+
+  it "returns n shifted left m bits when n > 0, m > 0" do
+    (@bignum << 4).should == 2361183241434822606848
+  end
+
+  it "returns n shifted left m bits when n < 0, m > 0" do
+    (-@bignum << 9).should == -75557863725914323419136
+  end
+
+  it "returns n shifted right m bits when n > 0, m < 0" do
+    (@bignum << -1).should == 73786976294838206464
+  end
+
+  it "returns n shifted right m bits when n < 0, m < 0" do
+    (-@bignum << -2).should == -36893488147419103232
+  end
+
+  it "returns n when n > 0, m == 0" do
+    (@bignum << 0).should == @bignum
+  end
+
+  it "returns n when n < 0, m == 0" do
+    (-@bignum << 0).should == -@bignum
+  end
+
+  it "returns 0 when m < 0 and m == p where 2**p > n >= 2**(p-1)" do
+    (@bignum << -68).should == 0
+  end
+
+  it "returns 0 when m < 0 and m is a Bignum" do
+    (@bignum << -bignum_value).should == 0
+  end
+
+  it "returns a Fixnum == fixnum_max when (fixnum_max * 2) << -1 and n > 0" do
+    result = (fixnum_max * 2) << -1
+    result.should be_an_instance_of(Fixnum)
+    result.should == fixnum_max
+  end
+
+  it "returns a Fixnum == fixnum_min when (fixnum_min * 2) << -1 and n < 0" do
+    result = (fixnum_min * 2) << -1
+    result.should be_an_instance_of(Fixnum)
+    result.should == fixnum_min
+  end
+
+  it "calls #to_int to convert the argument to an Integer" do
+    obj = mock("4")
+    obj.should_receive(:to_int).and_return(4)
+
+    (@bignum << obj).should == 2361183241434822606848
+  end
+
+  it "raises a TypeError when #to_int does not return an Integer" do
+    obj = mock("a string")
+    obj.should_receive(:to_int).and_return("asdf")
+
+    lambda { @bignum << obj }.should raise_error(TypeError)
+  end
+
+  it "raises a TypeError when passed nil" do
+    lambda { @bignum << nil }.should raise_error(TypeError)
+  end
+
+  it "raises a TypeError when passed a String" do
+    lambda { @bignum << "4" }.should raise_error(TypeError)
+  end
+end