Issue
mockgen -source=./driver/rocket_driver.go -destination ./driver/rocket_driver_mock.go -package driver
2022/06/01 21:39:44 Loading input failed: ./driver/rocket_driver.go:6:2: unknown embedded interface INavigatorDriver
make: *** [mockgen_rocket_driver] Error 1
https://github.com/golang/mock/issues/178
Here are my test files:
github.com/anyuser/test/test1.go:
package test
type A interface {
Method1()
}
github.com/anyuser/test/test2.go:
package test
type B interface {
A
}
Here's generation:
mockgen -source test2.go -destination test2_mocks.go -package test -aux_files test=test1.go
Error result:
Loading input failed: test2.go:4:2: unknown embedded interface A
Embedded Interfaces in aux_files
Embedded interfaces in aux_files generate unknown embedded interface XXX errors. See below for example of the problem:
// source
import (
alias "some.org/package/imported"
)
type Source interface {
alias.Foreign
}
// some.org/package/imported
type Foreign interface {
Embedded
}
type Embedded interface {}
Attempting to generate a mock will result in an unknown embedded interface Embedded. The issue is that the fileParser stores auxInterfaces underneath the package name explicitly specified in the aux_files flag.
In the parseInterface method, there is an incorrect assumption about an embedded interface always being in the source file.
case *ast.Ident:
// Embedded interface in this package.
ei := p.auxInterfaces[""][v.String()]
if ei == nil {
return nil, p.errorf(v.Pos(), "unknown embedded interface %s", v.String())
}
Solution
不要把 rocket_driver.go 跟其他依賴的 interface 放到同一個(gè) package 下面 ( mockgen 的默認(rèn)假設(shè)? ) .
mockgen -source=./rocket/rocket_driver.go
-destination ./rocket/rocket_driver_mock.go
-package rocket
-aux_files rocket=service/basic_info_service.go,rocket=driver/navigator_driver.go
type IRocketFetcher interface {
service.BasicInfoService
driver.INavigatorDriver
}
type RocketFetcher struct {
}
func NewRocketFetcher() *RocketFetcher { return &RocketFetcher{} }
源代碼工程目錄:
.
├── Makefile
├── README.md
├── alpha
│ ├── cql.go
│ ├── cql_compiler.go
│ ├── cql_compiler_test.go
│ └── cql_util.go
├── component
│ ├── component.go
│ └── component_test.go
├── constant
│ └── sql_key.go
├── datasource
│ └── data_source.go
├── driver
│ ├── navigator_driver.go
│ ├── navigator_driver_mock.go
│ ├── navigator_driver_mock_data.go
│ ├── sqlite_driver.go
│ └── sqlite_driver_test.go
├── go.mod
├── go.sum
├── lang
│ └── lang.go
├── onetable
│ ├── one_table.go
│ └── one_table_test.go
├── rocket
│ ├── basic_common.go
│ ├── basic_common_test.go
│ ├── index_common.go
│ ├── rocket_fetcher.go
│ ├── rocket_fetcher_mock.go
│ ├── rocket_fetcher_test.go
│ ├── rsd.go
│ └── rsd_test.go
├── service
│ ├── basic_info_service.go
│ ├── basic_info_service_mock.go
│ └── basic_info_service_test.go
├── stream
│ ├── parallel.go
│ ├── parallel_test.go
│ ├── ring.go
│ ├── ring_test.go
│ ├── stream.go
│ └── stream_test.go
├── stringx
│ ├── node.go
│ ├── node_fuzz_test.go
│ ├── node_test.go
│ ├── random.go
│ ├── random_test.go
│ ├── replacer.go
│ ├── replacer_fuzz_test.go
│ ├── replacer_test.go
│ ├── strings.go
│ ├── strings_test.go
│ ├── trie.go
│ └── trie_test.go
├── test_report.html
├── threading
│ ├── coroutinegroup.go
│ ├── coroutinegroup_test.go
│ ├── recover.go
│ ├── recover_test.go
│ ├── routines.go
│ ├── routines_test.go
│ ├── taskrunner.go
│ ├── taskrunner_test.go
│ ├── workergroup.go
│ └── workergroup_test.go
├── udfs
│ ├── indexation_convert.go
│ └── udf.go
└── utils
├── basic
│ ├── basic_common.go
│ ├── basic_constu.go
│ ├── basic_util.go
│ └── hotsoon_item_pack.go
├── chart
│ └── chart_common.go
├── co
│ ├── concurrent.go
│ └── concurrent_test.go
├── convert.go
├── copy
│ ├── copier.go
│ └── errors.go
├── dimu
│ └── dimu.go
├── indexu
│ ├── constu.go
│ ├── indexu.go
│ └── parse_request.go
├── modelu
│ ├── error.go
│ └── model.go
├── numberu
│ └── numberu.go
├── rocket_constu
│ └── constu.go
├── slicesu
│ └── slicesu.go
├── stringu
│ └── stringu.go
├── structu
│ └── structu.go
└── timeu
├── date_type.go
├── timeu.go
└── timeu_test.go
27 directories, 86 files
mockgen 指令參數(shù)說明
-source :
A file containing interfaces to be mocked.
-destination :
A file to which to write the resulting source code.
If you don't set this, the code is printed to standard output.
-package :
The package to use for the resulting mock class source code.
If you don't set this, the package name is mock_ concatenated with the package of the input file.
-imports :
A list of explicit imports that should be used in the resulting source code,
specified as a comma-separated list of elements of the form `foo=bar/baz` ,
where `bar/baz` is the package being imported ,
and `foo` is the identifier to use for the package in the generated source code.
-aux_files:
A list of additional files that should be consulted to resolve
e.g. embedded interfaces defined in a different file.
This is specified as a comma-separated list of elements of the form foo=bar/baz.go,
where bar/baz.go is the source file
and foo is the package name of that file used by the -source file.
-build_flags:
(reflect mode only) Flags passed verbatim to go build.
-mock_names:
A list of custom names for generated mocks. This is specified as a comma-separated list of elements of the form Repository=MockSensorRepository,Endpoint=MockSensorEndpoint, where Repository is the interface name and MockSensorRepository is the desired mock name (mock factory method and mock recorder will be named after the mock). If one of the interfaces has no custom name specified, then default naming convention will be used.
-copyright_file: Copyright file used to add copyright header to the resulting source code.
Go語言中接口組合（接口中包含接口）
在Go語言中，可以在接口A中組合其它的一個(gè)或多個(gè)接口（如接口B、C），這種方式等價(jià)于在接口A中添加接口B、C中聲明的方法。
//接口中可以組合其它接口，這種方式等效于在接口中添加其它接口的方法
type Reader interface {
read()
}
type Writer interface {
write()
}
//定義上述兩個(gè)接口的實(shí)現(xiàn)類
type MyReadWrite struct{}
func (mrw *MyReadWrite) read() {
fmt.Println("MyReadWrite...read")
}
func (mrw *MyReadWrite) write() {
fmt.Println("MyReadWrite...write")
}
//定義一個(gè)接口，組合了上述兩個(gè)接口
type ReadWriter interface {
Reader
Writer
}
//上述接口等價(jià)于：
type ReadWriterV2 interface {
read()
write()
}
//ReadWriter和ReadWriterV2兩個(gè)接口是等效的，因此可以相互賦值
func interfaceTest0104() {
mrw := &MyReadWrite{}
//mrw對象實(shí)現(xiàn)了read()方法和write()方法，因此可以賦值給ReadWriter和ReadWriterV2
var rw1 ReadWriter = mrw
rw1.read()
rw1.write()
fmt.Println("------")
var rw2 ReadWriterV2 = mrw
rw2.read()
rw2.write()
//同時(shí)，ReadWriter和ReadWriterV2兩個(gè)接口對象可以相互賦值
rw1 = rw2
rw2 = rw1
}
