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- /*
- *
- * Copyright 2018 gRPC authors.
- *
- * 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 grpctest implements testing helpers.
- package grpctest
-
- import (
- "reflect"
- "strings"
- "testing"
- )
-
- func getTestFunc(t *testing.T, xv reflect.Value, name string) func(*testing.T) {
- if m := xv.MethodByName(name); m.IsValid() {
- if f, ok := m.Interface().(func(*testing.T)); ok {
- return f
- }
- // Method exists but has the wrong type signature.
- t.Fatalf("grpctest: function %v has unexpected signature (%T)", name, m.Interface())
- }
- return func(*testing.T) {}
- }
-
- // RunSubTests runs all "Test___" functions that are methods of x as subtests
- // of the current test. If x contains methods "Setup(*testing.T)" or
- // "Teardown(*testing.T)", those are run before or after each of the test
- // functions, respectively.
- //
- // For example usage, see example_test.go. Run it using:
- // $ go test -v -run TestExample .
- //
- // To run a specific test/subtest:
- // $ go test -v -run 'TestExample/^Something$' .
- func RunSubTests(t *testing.T, x interface{}) {
- xt := reflect.TypeOf(x)
- xv := reflect.ValueOf(x)
-
- setup := getTestFunc(t, xv, "Setup")
- teardown := getTestFunc(t, xv, "Teardown")
-
- for i := 0; i < xt.NumMethod(); i++ {
- methodName := xt.Method(i).Name
- if !strings.HasPrefix(methodName, "Test") {
- continue
- }
- tfunc := getTestFunc(t, xv, methodName)
- t.Run(strings.TrimPrefix(methodName, "Test"), func(t *testing.T) {
- setup(t)
- // defer teardown to guarantee it is run even if tfunc uses t.Fatal()
- defer teardown(t)
- tfunc(t)
- })
- }
- }
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