Revert to older Go 1.24 WaitGroup pattern

NathanBaulch · NathanBaulch · commit fc6319f01c22 · 2026-01-27T18:17:05.000+11:00
diff --git a/testcontainers/backend_integration_test.go b/testcontainers/backend_integration_test.go
@@ -31,8 +31,12 @@ func (s *vfsTestSuite) SetupSuite() {
 	}
 	uris := make([]string, len(registers))
 	var wg sync.WaitGroup
+	wg.Add(len(registers))
 	for i := range registers {
-		wg.Go(func() { uris[i] = registers[i](s.T()) })
+		go func() {
+			uris[i] = registers[i](s.T())
+			wg.Done()
+		}()
 	}
 	wg.Wait()
 
diff --git a/testcontainers/io_integration_test.go b/testcontainers/io_integration_test.go
@@ -29,8 +29,12 @@ func (s *ioTestSuite) SetupSuite() {
 	}
 	uris := make([]string, len(registers))
 	var wg sync.WaitGroup
+	wg.Add(len(registers))
 	for i := range registers {
-		wg.Go(func() { uris[i] = registers[i](s.T()) })
+		go func() {
+			uris[i] = registers[i](s.T())
+			wg.Done()
+		}()
 	}
 	wg.Wait()
 

Original file line number	Diff line number	Diff line change
`@@ -31,8 +31,12 @@ func (s *vfsTestSuite) SetupSuite() {`
`31`	`31`	`}`
`32`	`32`	`uris := make([]string, len(registers))`
`33`	`33`	`var wg sync.WaitGroup`
	`34`	`+ wg.Add(len(registers))`
`34`	`35`	`for i := range registers {`
`35`		`- wg.Go(func() { uris[i] = registers[i](s.T()) })`
	`36`	`+ go func() {`
	`37`	`+ uris[i] = registers[i](s.T())`
	`38`	`+ wg.Done()`
	`39`	`+ }()`
`36`	`40`	`}`
`37`	`41`	`wg.Wait()`
`38`	`42`
Original file line number	Diff line number	Diff line change
`@@ -29,8 +29,12 @@ func (s *ioTestSuite) SetupSuite() {`
`29`	`29`	`}`
`30`	`30`	`uris := make([]string, len(registers))`
`31`	`31`	`var wg sync.WaitGroup`
	`32`	`+ wg.Add(len(registers))`
`32`	`33`	`for i := range registers {`
`33`		`- wg.Go(func() { uris[i] = registers[i](s.T()) })`
	`34`	`+ go func() {`
	`35`	`+ uris[i] = registers[i](s.T())`
	`36`	`+ wg.Done()`
	`37`	`+ }()`
`34`	`38`	`}`
`35`	`39`	`wg.Wait()`
`36`	`40`