github.com/golang/mock@v1.6.0/gomock/controller_114_test.go (about)

     1  // Copyright 2020 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  // +build go1.14
    16  
    17  package gomock_test
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/golang/mock/gomock"
    23  )
    24  
    25  func (e *ErrorReporter) Cleanup(f func()) {
    26  	e.t.Helper()
    27  	e.t.Cleanup(f)
    28  }
    29  
    30  func TestMultipleDefers(t *testing.T) {
    31  	reporter := NewErrorReporter(t)
    32  	reporter.Cleanup(func() {
    33  		reporter.assertPass("No errors for multiple calls to Finish")
    34  	})
    35  	ctrl := gomock.NewController(reporter)
    36  	ctrl.Finish()
    37  }
    38  
    39  // Equivalent to the TestNoRecordedCallsForAReceiver, but without explicitly
    40  // calling Finish.
    41  func TestDeferNotNeededFail(t *testing.T) {
    42  	reporter := NewErrorReporter(t)
    43  	subject := new(Subject)
    44  	var ctrl *gomock.Controller
    45  	reporter.Cleanup(func() {
    46  		reporter.assertFatal(func() {
    47  			ctrl.Call(subject, "NotRecordedMethod", "argument")
    48  		}, "Unexpected call to", "there are no expected calls of the method \"NotRecordedMethod\" for that receiver")
    49  	})
    50  	ctrl = gomock.NewController(reporter)
    51  }
    52  
    53  func TestDeferNotNeededPass(t *testing.T) {
    54  	reporter := NewErrorReporter(t)
    55  	subject := new(Subject)
    56  	var ctrl *gomock.Controller
    57  	reporter.Cleanup(func() {
    58  		reporter.assertPass("Expected method call made.")
    59  	})
    60  	ctrl = gomock.NewController(reporter)
    61  	ctrl.RecordCall(subject, "FooMethod", "argument")
    62  	ctrl.Call(subject, "FooMethod", "argument")
    63  }
    64  
    65  func TestOrderedCallsInCorrect(t *testing.T) {
    66  	reporter := NewErrorReporter(t)
    67  	subjectOne := new(Subject)
    68  	subjectTwo := new(Subject)
    69  	var ctrl *gomock.Controller
    70  	reporter.Cleanup(func() {
    71  		reporter.assertFatal(func() {
    72  			gomock.InOrder(
    73  				ctrl.RecordCall(subjectOne, "FooMethod", "1").AnyTimes(),
    74  				ctrl.RecordCall(subjectTwo, "FooMethod", "2"),
    75  				ctrl.RecordCall(subjectTwo, "BarMethod", "3"),
    76  			)
    77  			ctrl.Call(subjectOne, "FooMethod", "1")
    78  			// FooMethod(2) should be called before BarMethod(3)
    79  			ctrl.Call(subjectTwo, "BarMethod", "3")
    80  		}, "Unexpected call to", "Subject.BarMethod([3])", "doesn't have a prerequisite call satisfied")
    81  	})
    82  	ctrl = gomock.NewController(reporter)
    83  }
    84  
    85  // Test that calls that are prerequisites to other calls but have maxCalls >
    86  // minCalls are removed from the expected call set.
    87  func TestOrderedCallsWithPreReqMaxUnbounded(t *testing.T) {
    88  	reporter := NewErrorReporter(t)
    89  	subjectOne := new(Subject)
    90  	subjectTwo := new(Subject)
    91  	var ctrl *gomock.Controller
    92  	reporter.Cleanup(func() {
    93  		reporter.assertFatal(func() {
    94  			// Initially we should be able to call FooMethod("1") as many times as we
    95  			// want.
    96  			ctrl.Call(subjectOne, "FooMethod", "1")
    97  			ctrl.Call(subjectOne, "FooMethod", "1")
    98  
    99  			// But calling something that has it as a prerequite should remove it from
   100  			// the expected call set. This allows tests to ensure that FooMethod("1") is
   101  			// *not* called after FooMethod("2").
   102  			ctrl.Call(subjectTwo, "FooMethod", "2")
   103  
   104  			ctrl.Call(subjectOne, "FooMethod", "1")
   105  		})
   106  	})
   107  	ctrl = gomock.NewController(reporter)
   108  }
   109  
   110  func TestCallAfterLoopPanic(t *testing.T) {
   111  	reporter := NewErrorReporter(t)
   112  	subject := new(Subject)
   113  	var ctrl *gomock.Controller
   114  	reporter.Cleanup(func() {
   115  		firstCall := ctrl.RecordCall(subject, "FooMethod", "1")
   116  		secondCall := ctrl.RecordCall(subject, "FooMethod", "2")
   117  		thirdCall := ctrl.RecordCall(subject, "FooMethod", "3")
   118  
   119  		gomock.InOrder(firstCall, secondCall, thirdCall)
   120  
   121  		defer func() {
   122  			err := recover()
   123  			if err == nil {
   124  				t.Error("Call.After creation of dependency loop did not panic.")
   125  			}
   126  		}()
   127  
   128  		// This should panic due to dependency loop.
   129  		firstCall.After(thirdCall)
   130  	})
   131  	ctrl = gomock.NewController(reporter)
   132  }