added some datarace examples (12cc9ba8) · Commits · bsmrgo / playground

dataraces/dataraces.go

0 → 100644

+1 −0

Original line number	Diff line number	Diff line
		package dataraces

0 → 100644

+45 −0

Original line number	Diff line number	Diff line
		package dataraces

		import (
		"sync"
		"testing"
		)

		func TestDatarace1(t *testing.T) {
		// THIS IS WRONG
		var wg sync.WaitGroup
		wg.Add(5)
		for i := 0; i < 5; i++ {
		go func() {
		t.Logf("i: %d", i)
		wg.Done()
		}()
		}
		wg.Wait()
		}
		func TestDatarace2(t *testing.T) {
		// THIS IS WORKING
		var wg sync.WaitGroup
		wg.Add(5)
		for i := 0; i < 5; i++ {
		go func(n int) {
		t.Logf("i: %d", n)
		wg.Done()
		}(i)
		}
		wg.Wait()
		}

		func TestDatarace3(t *testing.T) {
		// THIS IS WORKING AS WELL
		var wg sync.WaitGroup
		wg.Add(5)
		for i := 0; i < 5; i++ {
		n := i
		go func() {
		t.Logf("i: %d", n)
		wg.Done()
		}()
		}
		wg.Wait()
		}