some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / sync@v0.0.0-20200625203802-6e8e738ad208 / singleflight / singleflight_test.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/sync@v0.0.0-20200625203802-6e8e738ad208/singleflight/singleflight_test.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/sync@v0.0.0-20200625203802-6e8e738ad208/singleflight/singleflight_test.go
deleted file mode 100644 (file)
index ad04037..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/sync@v0.0.0-20200625203802-6e8e738ad208/singleflight/singleflight_test.go
+++ /dev/null
@@ -1,159 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package singleflight
-
-import (
-       "errors"
-       "fmt"
-       "sync"
-       "sync/atomic"
-       "testing"
-       "time"
-)
-
-func TestDo(t *testing.T) {
-       var g Group
-       v, err, _ := g.Do("key", func() (interface{}, error) {
-               return "bar", nil
-       })
-       if got, want := fmt.Sprintf("%v (%T)", v, v), "bar (string)"; got != want {
-               t.Errorf("Do = %v; want %v", got, want)
-       }
-       if err != nil {
-               t.Errorf("Do error = %v", err)
-       }
-}
-
-func TestDoErr(t *testing.T) {
-       var g Group
-       someErr := errors.New("Some error")
-       v, err, _ := g.Do("key", func() (interface{}, error) {
-               return nil, someErr
-       })
-       if err != someErr {
-               t.Errorf("Do error = %v; want someErr %v", err, someErr)
-       }
-       if v != nil {
-               t.Errorf("unexpected non-nil value %#v", v)
-       }
-}
-
-func TestDoDupSuppress(t *testing.T) {
-       var g Group
-       var wg1, wg2 sync.WaitGroup
-       c := make(chan string, 1)
-       var calls int32
-       fn := func() (interface{}, error) {
-               if atomic.AddInt32(&calls, 1) == 1 {
-                       // First invocation.
-                       wg1.Done()
-               }
-               v := <-c
-               c <- v // pump; make available for any future calls
-
-               time.Sleep(10 * time.Millisecond) // let more goroutines enter Do
-
-               return v, nil
-       }
-
-       const n = 10
-       wg1.Add(1)
-       for i := 0; i < n; i++ {
-               wg1.Add(1)
-               wg2.Add(1)
-               go func() {
-                       defer wg2.Done()
-                       wg1.Done()
-                       v, err, _ := g.Do("key", fn)
-                       if err != nil {
-                               t.Errorf("Do error: %v", err)
-                               return
-                       }
-                       if s, _ := v.(string); s != "bar" {
-                               t.Errorf("Do = %T %v; want %q", v, v, "bar")
-                       }
-               }()
-       }
-       wg1.Wait()
-       // At least one goroutine is in fn now and all of them have at
-       // least reached the line before the Do.
-       c <- "bar"
-       wg2.Wait()
-       if got := atomic.LoadInt32(&calls); got <= 0 || got >= n {
-               t.Errorf("number of calls = %d; want over 0 and less than %d", got, n)
-       }
-}
-
-// Test that singleflight behaves correctly after Forget called.
-// See https://github.com/golang/go/issues/31420
-func TestForget(t *testing.T) {
-       var g Group
-
-       var firstStarted, firstFinished sync.WaitGroup
-
-       firstStarted.Add(1)
-       firstFinished.Add(1)
-
-       firstCh := make(chan struct{})
-       go func() {
-               g.Do("key", func() (i interface{}, e error) {
-                       firstStarted.Done()
-                       <-firstCh
-                       firstFinished.Done()
-                       return
-               })
-       }()
-
-       firstStarted.Wait()
-       g.Forget("key") // from this point no two function using same key should be executed concurrently
-
-       var secondStarted int32
-       var secondFinished int32
-       var thirdStarted int32
-
-       secondCh := make(chan struct{})
-       secondRunning := make(chan struct{})
-       go func() {
-               g.Do("key", func() (i interface{}, e error) {
-                       defer func() {
-                       }()
-                       atomic.AddInt32(&secondStarted, 1)
-                       // Notify that we started
-                       secondCh <- struct{}{}
-                       // Wait other get above signal
-                       <-secondRunning
-                       <-secondCh
-                       atomic.AddInt32(&secondFinished, 1)
-                       return 2, nil
-               })
-       }()
-
-       close(firstCh)
-       firstFinished.Wait() // wait for first execution (which should not affect execution after Forget)
-
-       <-secondCh
-       // Notify second that we got the signal that it started
-       secondRunning <- struct{}{}
-       if atomic.LoadInt32(&secondStarted) != 1 {
-               t.Fatal("Second execution should be executed due to usage of forget")
-       }
-
-       if atomic.LoadInt32(&secondFinished) == 1 {
-               t.Fatal("Second execution should be still active")
-       }
-
-       close(secondCh)
-       result, _, _ := g.Do("key", func() (i interface{}, e error) {
-               atomic.AddInt32(&thirdStarted, 1)
-               return 3, nil
-       })
-
-       if atomic.LoadInt32(&thirdStarted) != 0 {
-               t.Error("Third call should not be started because was started during second execution")
-       }
-       if result != 2 {
-               t.Errorf("We should receive result produced by second call, expected: 2, got %d", result)
-       }
-}