3 files changed, 84 insertions, 0 deletions
diff --git a/spec/ruby/core/numeric/shared/arg.rb b/spec/ruby/core/numeric/shared/arg.rb
new file mode 100644
index 0000000000..c8e7ad8333
--- /dev/null
+++ b/spec/ruby/core/numeric/shared/arg.rb
@@ -0,0 +1,38 @@
+require_relative '../../../spec_helper'
+
+describe :numeric_arg, shared: true do
+  before :each do
+    @numbers = [
+      20,
+      Rational(3, 4),
+      bignum_value,
+      infinity_value
+    ]
+  end
+
+  it "returns 0 if positive" do
+    @numbers.each do |number|
+      number.send(@method).should == 0
+    end
+  end
+
+  it "returns Pi if negative" do
+    @numbers.each do |number|
+      (0-number).send(@method).should == Math::PI
+    end
+  end
+
+  describe "with a Numeric subclass" do
+    it "returns 0 if self#<(0) returns false" do
+      numeric = mock_numeric('positive')
+      numeric.should_receive(:<).with(0).and_return(false)
+      numeric.send(@method).should == 0
+    end
+
+    it "returns Pi if self#<(0) returns true" do
+      numeric = mock_numeric('positive')
+      numeric.should_receive(:<).with(0).and_return(true)
+      numeric.send(@method).should == Math::PI
+    end
+  end
+end
diff --git a/spec/ruby/core/numeric/shared/conj.rb b/spec/ruby/core/numeric/shared/conj.rb
new file mode 100644
index 0000000000..6d5197ecab
--- /dev/null
+++ b/spec/ruby/core/numeric/shared/conj.rb
@@ -0,0 +1,20 @@
+require_relative '../../../spec_helper'
+
+describe :numeric_conj, shared: true do
+  before :each do
+    @numbers = [
+      20,             # Integer
+      398.72,         # Float
+      Rational(3, 4), # Rational
+      bignum_value,
+      infinity_value,
+      nan_value
+    ]
+  end
+
+  it "returns self" do
+    @numbers.each do |number|
+      number.send(@method).should equal(number)
+    end
+  end
+end
diff --git a/spec/ruby/core/numeric/shared/imag.rb b/spec/ruby/core/numeric/shared/imag.rb
new file mode 100644
index 0000000000..11daf0af55
--- /dev/null
+++ b/spec/ruby/core/numeric/shared/imag.rb
@@ -0,0 +1,26 @@
+require_relative '../../../spec_helper'
+
+describe :numeric_imag, shared: true do
+  before :each do
+    @numbers = [
+      20,             # Integer
+      398.72,         # Float
+      Rational(3, 4), # Rational
+      bignum_value, # Bignum
+      infinity_value,
+      nan_value
+    ].map{|n| [n,-n]}.flatten
+  end
+
+  it "returns 0" do
+    @numbers.each do |number|
+      number.send(@method).should == 0
+    end
+  end
+
+  it "raises an ArgumentError if given any arguments" do
+   @numbers.each do |number|
+     lambda { number.send(@method, number) }.should raise_error(ArgumentError)
+   end
+  end
+end