add csi-test to vendor

vendor/github.com/golang/mock/gomock/matchers.go

@@ -0,0 +1,99 @@
+//go:generate mockgen -destination mock_matcher/mock_matcher.go github.com/golang/mock/gomock Matcher
+
+// Copyright 2010 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package gomock
+
+import (
+	"fmt"
+	"reflect"
+)
+
+// A Matcher is a representation of a class of values.
+// It is used to represent the valid or expected arguments to a mocked method.
+type Matcher interface {
+	// Matches returns whether x is a match.
+	Matches(x interface{}) bool
+
+	// String describes what the matcher matches.
+	String() string
+}
+
+type anyMatcher struct{}
+
+func (anyMatcher) Matches(x interface{}) bool {
+	return true
+}
+
+func (anyMatcher) String() string {
+	return "is anything"
+}
+
+type eqMatcher struct {
+	x interface{}
+}
+
+func (e eqMatcher) Matches(x interface{}) bool {
+	return reflect.DeepEqual(e.x, x)
+}
+
+func (e eqMatcher) String() string {
+	return fmt.Sprintf("is equal to %v", e.x)
+}
+
+type nilMatcher struct{}
+
+func (nilMatcher) Matches(x interface{}) bool {
+	if x == nil {
+		return true
+	}
+
+	v := reflect.ValueOf(x)
+	switch v.Kind() {
+	case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map,
+		reflect.Ptr, reflect.Slice:
+		return v.IsNil()
+	}
+
+	return false
+}
+
+func (nilMatcher) String() string {
+	return "is nil"
+}
+
+type notMatcher struct {
+	m Matcher
+}
+
+func (n notMatcher) Matches(x interface{}) bool {
+	return !n.m.Matches(x)
+}
+
+func (n notMatcher) String() string {
+	// TODO: Improve this if we add a NotString method to the Matcher interface.
+	return "not(" + n.m.String() + ")"
+}
+
+// Constructors
+func Any() Matcher             { return anyMatcher{} }
+func Eq(x interface{}) Matcher { return eqMatcher{x} }
+func Nil() Matcher             { return nilMatcher{} }
+func Not(x interface{}) Matcher {
+	if m, ok := x.(Matcher); ok {
+		return notMatcher{m}
+	}
+	return notMatcher{Eq(x)}
+}