1 files changed, 69 insertions, 0 deletions
diff --git a/spec/mspec/spec/guards/support_spec.rb b/spec/mspec/spec/guards/support_spec.rb
new file mode 100644
index 0000000000..43a7e76f06
--- /dev/null
+++ b/spec/mspec/spec/guards/support_spec.rb
@@ -0,0 +1,69 @@
+require 'spec_helper'
+require 'mspec/guards'
+
+describe Object, "#not_supported_on" do
+  before :all do
+    @verbose = $VERBOSE
+    $VERBOSE = nil
+    @ruby_name = Object.const_get :RUBY_NAME if Object.const_defined? :RUBY_NAME
+  end
+
+  after :all do
+    $VERBOSE = @verbose
+    if @ruby_name
+      Object.const_set :RUBY_NAME, @ruby_name
+    else
+      Object.send :remove_const, :RUBY_NAME
+    end
+  end
+
+  before :each do
+    ScratchPad.clear
+  end
+
+  it "raises an Exception when passed :ruby" do
+    Object.const_set :RUBY_NAME, "jruby"
+    lambda {
+      not_supported_on(:ruby) { ScratchPad.record :yield }
+    }.should raise_error(Exception)
+    ScratchPad.recorded.should_not == :yield
+  end
+
+  it "does not yield when #implementation? returns true" do
+    Object.const_set :RUBY_NAME, "jruby"
+    not_supported_on(:jruby) { ScratchPad.record :yield }
+    ScratchPad.recorded.should_not == :yield
+  end
+
+  it "yields when #standard? returns true" do
+    Object.const_set :RUBY_NAME, "ruby"
+    not_supported_on(:rubinius) { ScratchPad.record :yield }
+    ScratchPad.recorded.should == :yield
+  end
+
+  it "yields when #implementation? returns false" do
+    Object.const_set :RUBY_NAME, "jruby"
+    not_supported_on(:rubinius) { ScratchPad.record :yield }
+    ScratchPad.recorded.should == :yield
+  end
+end
+
+describe Object, "#not_supported_on" do
+  before :each do
+    @guard = SupportedGuard.new
+    SupportedGuard.stub(:new).and_return(@guard)
+  end
+
+  it "sets the name of the guard to :not_supported_on" do
+    not_supported_on(:rubinius) { }
+    @guard.name.should == :not_supported_on
+  end
+
+  it "calls #unregister even when an exception is raised in the guard block" do
+    @guard.should_receive(:match?).and_return(false)
+    @guard.should_receive(:unregister)
+    lambda do
+      not_supported_on(:rubinius) { raise Exception }
+    end.should raise_error(Exception)
+  end
+end