Add simple testing infrastructure

vendor/github.com/onsi/gomega/matchers/equal_matcher.go

@@ -0,0 +1,27 @@
+package matchers
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/onsi/gomega/format"
+)
+
+type EqualMatcher struct {
+	Expected interface{}
+}
+
+func (matcher *EqualMatcher) Match(actual interface{}) (success bool, err error) {
+	if actual == nil && matcher.Expected == nil {
+		return false, fmt.Errorf("Refusing to compare <nil> to <nil>.\nBe explicit and use BeNil() instead.  This is to avoid mistakes where both sides of an assertion are erroneously uninitialized.")
+	}
+	return reflect.DeepEqual(actual, matcher.Expected), nil
+}
+
+func (matcher *EqualMatcher) FailureMessage(actual interface{}) (message string) {
+	return format.Message(actual, "to equal", matcher.Expected)
+}
+
+func (matcher *EqualMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+	return format.Message(actual, "not to equal", matcher.Expected)
+}