1 // Copyright 2022 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package asserts 16 17 import ( 18 "strings" 19 "testing" 20 ) 21 22 func AssertErrorIsExpected(t *testing.T, actual error, expect error) { 23 if expect == nil { 24 if actual != nil { 25 t.Fatalf("expect to get nil err, but got %v", actual) 26 } 27 } else { 28 if actual == nil { 29 t.Fatalf("expect to get %v err, but got nil", expect) 30 } 31 if !strings.Contains(actual.Error(), expect.Error()) { 32 t.Fatalf("expect to have error about %v, but got %v", expect, actual) 33 } 34 } 35 } 36