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// Copyright 2018 The Wire Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This test verifies that the concrete type is provided only once, even if an
// interface additionally depends on it.
package main
import (
"fmt"
"sync"
)
func main() {
injectFooBar()
fmt.Println(provideBarCalls)
}
type Fooer interface {
Foo() string
}
type Bar string
type FooBar struct {
Fooer Fooer
Bar *Bar
}
func (b *Bar) Foo() string {
return string(*b)
}
func provideBar() *Bar {
mu.Lock()
provideBarCalls++
mu.Unlock()
b := new(Bar)
*b = "Hello, World!"
return b
}
var (
mu sync.Mutex
provideBarCalls int
)
func provideFooBar(fooer Fooer, bar *Bar) FooBar {
return FooBar{fooer, bar}
}
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