Added some tests for the change in fdcb150 where Mocha::ExpectationEr…

…ror became an Exception not just a StandardError.

See the following for more details :-
https://github.com/floehopper/mocha/issues#issue/15
http://floehopper.lighthouseapp.com/projects/22289/tickets/1-mochaexpectationerror-exception

test/acceptance/exception_rescue_test.rb

@@ -0,0 +1,58 @@
+require File.expand_path('../acceptance_test_helper', __FILE__)
+require 'mocha'
+
+class ExceptionRescueTest < Test::Unit::TestCase
+
+  include AcceptanceTest
+
+  def setup
+    setup_acceptance_test
+  end
+
+  def teardown
+    teardown_acceptance_test
+  end
+
+  def test_unexpected_invocation_exception_is_not_caught_by_standard_rescue
+    test_result = run_as_test do
+      mock = mock('mock')
+      begin
+        mock.some_method
+      rescue => e
+        flunk "should not rescue #{e.class}"
+      end
+    end
+    assert_failed(test_result)
+    failure_message_lines = test_result.failure_messages.first.split("\n")
+    assert_equal "unexpected invocation: #<Mock:mock>.some_method()", failure_message_lines.first
+  end
+
+  def test_invocation_never_expected_exception_is_not_caught_by_standard_rescue
+    test_result = run_as_test do
+      mock = mock('mock')
+      mock.expects(:some_method).never
+      begin
+        mock.some_method
+      rescue => e
+        flunk "should not rescue #{e.class}"
+      end
+    end
+    assert_failed(test_result)
+    failure_message_lines = test_result.failure_messages.first.split("\n")
+    assert_equal "unexpected invocation: #<Mock:mock>.some_method()", failure_message_lines.first
+  end
+
+  def test_unsatisfied_expectation_exception_is_not_caught_by_standard_rescue
+    test_result = run_as_test do
+      mock = mock('mock')
+      mock.expects(:some_method)
+    end
+    assert_failed(test_result)
+    failure_message_lines = test_result.failure_messages.first.split("\n")
+    assert_equal [
+      "not all expectations were satisfied",
+      "unsatisfied expectations:",
+      "- expected exactly once, not yet invoked: #<Mock:mock>.some_method(any_parameters)"
+    ], failure_message_lines
+  end
+end