GoMock is a mocking framework for the Go programming language.
GoMock integrates well with Go's built-in testing package, but can be used in other contexts too.
Questions tagged [gomock]
68 questions
18
votes
3 answers
Find version of a module
We are working with Go modules. I want in a CLI to get the specific version of a module. Is it possible?
If you are curious, the reason is that I want to add the following generate command:
//go:generate go run github.com/golang/mock/mockgen…
ElyashivLavi
- 1,681
- 3
- 22
- 33
12
votes
1 answer
Testing with Gomock returns error: Expected call has already been called the max number of times
I am using Gomock https://godoc.org/github.com/golang/mock and mockgen
The Source code for this test is:
package sqs
import (
"fmt"
"log"
"os"
"runtime"
"github.com/aws/aws-sdk-go/aws/session"
…
Alwin Doss
- 962
- 2
- 16
- 33
9
votes
1 answer
resolving imported package collision for mockgen
I have a package collision where I get the following error:
mockgen -package=mocks -source=myproto.pb.go -destination=mocks/my_mocks.go
imported package collision: "foo" imported twice
I see one import that is obvious:
import foo…
Bren
- 3,516
- 11
- 41
- 73
8
votes
2 answers
Which directory to put mocks?
I've been most recently experimenting with GoMock, the test mocking framework supported by the official creators of the Go language. I was wondering where is the most reasonable place to put these mocked files.
My current directory structure is as…
hlin117
- 20,764
- 31
- 72
- 93
7
votes
1 answer
Testing and mocking a function which does not return any value
I want to test a function, which does not return any value, but instead triggers other functions. While reading about testing, I found information that this is called a behavioral verification and that by mocking I can check what functions and in…
Ziva
- 3,181
- 15
- 48
- 80
7
votes
3 answers
how to inject an url to httptest.server in golang?
For sentence
resp, err := client.Get(fmt.Sprintf("https://www.xxxxx/day?time=%s", time))
If I want to mock a response to this client.Get() in unit test, I should use httptest.server, but how can I bind the url (https://www.xxxxx/day?time=%s) to the…
Pineapple
- 111
- 1
- 4
7
votes
2 answers
Golang: how to mock ...interface{} arguents using gomock
I have a Printer interface that uses the standard go Printf function signature:
type Printer interface {
Printf(format string, tokens ...interface{})
}
I would like to be able to mock this interface using gomock, but I'm not sure how setup the…
Zack
- 71
- 1
- 5
6
votes
4 answers
zsh: command not found: mockgen - golang 1.18 - macOS Monterrey
I'm new to go. Currently I'm using zsh terminal in macOS, just followed the instructions pointed out here https://github.com/golang/mock when installing go mock. However when trying to execute a mockgen command I keep seeing zsh: command not found:…
David Galvis Sandoval
- 361
- 3
- 5
- 12
5
votes
1 answer
How do you set the return value of a mocked function?
I am using gomock to create mock objects for unit testing. The following gives the mock object a method called GetQuestionById and tells the mock controller to expect the method to be called with argument 1:
gw.EXPECT().GetQuestionById(1)
But how…
Vebjorn Ljosa
- 17,438
- 13
- 70
- 88
4
votes
1 answer
Optional calls in GoMock
I want to use GoMock to test some code, without coupling my tests too tightly to the actual implementation of the thing under test. But GoMock seems to require that I be able to say in advance exactly what calls the code under test will make, even…
interfect
- 2,665
- 1
- 20
- 35
4
votes
0 answers
How to use gomock with sqlc
I'd like to write unit tests for functions generated by sqlc but I don't understand how to use gomock. I'm new to mocking.
Below I'll describe a bit how sqlc generation works.
So, sqlc generates an interface DBTX:
type DBTX interface {
…
Vsevolod Molchanov
- 99
- 4
4
votes
3 answers
Can I mock a function with pointer parameter which need to be used
Let's say we have a library provide a function Double to double the integer, we use pointer i to get the result value not by return:
package api
type Action interface {
Double(i *int) error
}
type NUM struct{}
func (n NUM) Double(i *int)…
hotsnow
- 59
- 1
- 1
- 3
4
votes
1 answer
Using testing.T in TestMain
There are a few test cases I want to run for which there is a need to start a GRPC mock server. I am using gomock library for this. To start the server, I have to pass a variable of type testing.T to this function - gomock.NewController(). Since…
aniztar
- 2,443
- 4
- 18
- 24
4
votes
1 answer
How to run mockgen during build?
I have started using gomock to create mock objects for unit testing. Gomock requires that that I run the mockgen command with certain argument in order to generate code for the mock. This needs to be done again every time the interfaces that is…
Vebjorn Ljosa
- 17,438
- 13
- 70
- 88
3
votes
1 answer
Testing my interface in golang with mocks. Specifically test 1 function that calls a sibling function
Let's say I have this code and I want to create a test for Foo()
The important part it Foo makes a call to Bar
package main
type MyInterface interface {
Foo() error
Bar() error
}
type MyStruct struct {
}
func NewMyStruct() MyInterface{
…
Mexicoder
- 517
- 1
- 6
- 18