add core/nil specs

test/test-android/app/core/nil/and_spec.rb

@@ -0,0 +1,9 @@
+describe "NilClass#&" do
+  it "returns false" do
+    (nil & nil).should == false
+    (nil & true).should == false
+    (nil & false).should == false
+    (nil & "").should == false
+    (nil & mock('x')).should == false
+  end
+end

test/test-android/app/core/nil/dup_spec.rb

@@ -0,0 +1,5 @@
+describe "NilClass#dup" do
+  it "raises a TypeError" do
+    lambda { nil.dup }.should raise_error(TypeError)
+  end
+end

test/test-android/app/core/nil/inspect_spec.rb

@@ -0,0 +1,5 @@
+describe "NilClass#inspect" do
+  it "returns the string 'nil'" do
+    nil.inspect.should == "nil"
+  end
+end

test/test-android/app/core/nil/nil_spec.rb

@@ -0,0 +1,5 @@
+describe "NilClass#nil?" do
+  it "returns true" do
+    nil.nil?.should == true
+  end
+end

test/test-android/app/core/nil/or_spec.rb

@@ -0,0 +1,9 @@
+describe "NilClass#|" do
+  it "returns false if other is nil or false, otherwise true" do
+    (nil | nil).should == false
+    (nil | true).should == true
+    (nil | false).should == false
+    (nil | "").should == true
+    (nil | mock('x')).should == true
+  end
+end

test/test-android/app/core/nil/to_a_spec.rb

@@ -0,0 +1,5 @@
+describe "NilClass#to_a" do
+  it "returns an empty array" do
+    nil.to_a.should == []
+  end
+end

test/test-android/app/core/nil/to_f_spec.rb

@@ -0,0 +1,9 @@
+describe "NilClass#to_f" do
+  it "returns 0.0" do
+    nil.to_f.should == 0.0
+  end
+
+  it "does not cause NilClass to be coerced to Float" do
+    (0.0 == nil).should == false
+  end
+end

test/test-android/app/core/nil/to_i_spec.rb

@@ -0,0 +1,9 @@
+describe "NilClass#to_i" do
+  it "returns 0" do
+    nil.to_i.should == 0
+  end
+
+  it "does not cause NilClass to be coerced to Fixnum" do
+    (0 == nil).should == false
+  end
+end

test/test-android/app/core/nil/to_s_spec.rb

@@ -0,0 +1,5 @@
+describe "NilClass#to_s" do
+  it "returns the string ''" do
+    nil.to_s.should == ""
+  end
+end

test/test-android/app/core/nil/xor_spec.rb

@@ -0,0 +1,9 @@
+describe "NilClass#^" do
+  it "returns false if other is nil or false, otherwise true" do
+    (nil ^ nil).should == false
+    (nil ^ true).should == true
+    (nil ^ false).should == false
+    (nil ^ "").should == true
+    (nil ^ mock('x')).should == true
+  end
+end

test/test-android/app/main.rb

@@ -163,6 +163,24 @@ class Object
     end
   end
 
+  def raise_error(klass)
+    lambda do |obj, res|
+      begin
+        obj.call
+        if !res
+          puts "Expectation failed (expected `#{klass}' to be raised, but nothing happened)"
+          $expectations_failures += 1
+        end
+      rescue => e
+        if (e.is_a?(klass)) != res
+          puts "Expectation failed (expected `#{klass}' to be raised, got `#{e}')"
+          $expectations_failures += 1
+        end
+      end
+      $expectations_total += 1
+    end
+  end
+
   def mock(obj)
     # XXX we probably should be smarter here.
     obj