go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/common/exec/execmock/mock_start_error.go (about)

     1  // Copyright 2023 The LUCI Authors.
     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 execmock
    16  
    17  import (
    18  	"context"
    19  
    20  	"go.chromium.org/luci/common/exec/internal/execmockserver"
    21  )
    22  
    23  type startErrorMocker struct {
    24  	f filter
    25  }
    26  
    27  func (e *startErrorMocker) Mock(ctx context.Context, errs ...error) *Uses[None] {
    28  	return addMockEntry[None](ctx, e.f, &execmockserver.InvocationInput{
    29  		StartError: getOne(errs),
    30  	})
    31  }
    32  
    33  func (e *startErrorMocker) WithArgs(argPattern ...string) Mocker[error, None] {
    34  	ret := *e
    35  	ret.f = e.f.withArgs(argPattern)
    36  	return &ret
    37  }
    38  
    39  func (e *startErrorMocker) WithEnv(varName, valuePattern string) Mocker[error, None] {
    40  	ret := *e
    41  	ret.f = e.f.withEnv(varName, valuePattern)
    42  	return &ret
    43  }
    44  
    45  func (e *startErrorMocker) WithLimit(limit uint64) Mocker[error, None] {
    46  	ret := *e
    47  	ret.f.limit = limit
    48  	return &ret
    49  }
    50  
    51  // StartError allows you to mock any execution with an error which will be
    52  // returned from Start() (i.e. no process will actually run).
    53  //
    54  // This can be used to return exec.ErrNotFound from a given invocation, or any
    55  // other error (e.g. bad executable file, or whatever you like).
    56  var StartError Mocker[error, None] = &startErrorMocker{}