Merge pull request #2062 from ipfs/fix-t-fatal-goroutine

fix t.Fatal in a goroutine

exchange/bitswap/bitswap_test.go

@@ -168,19 +168,31 @@ func PerformDistributionTest(t *testing.T, numInstances, numBlocks int) {
 	t.Log("Distribute!")
 
 	wg := sync.WaitGroup{}
+	errs := make(chan error)
+
 	for _, inst := range instances[1:] {
 		wg.Add(1)
 		go func(inst Instance) {
 			defer wg.Done()
 			outch, err := inst.Exchange.GetBlocks(ctx, blkeys)
 			if err != nil {
-				t.Fatal(err)
+				errs <- err
 			}
 			for _ = range outch {
 			}
 		}(inst)
 	}
+
+	go func() {
 		wg.Wait()
+		close(errs)
+	}()
+
+	for err := range errs {
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
 
 	t.Log("Verify!")
 

fuse/readonly/ipfs_test.go

@@ -4,6 +4,7 @@ package readonly
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"math/rand"
@@ -154,6 +155,7 @@ func TestIpfsStressRead(t *testing.T) {
 
 	// Now read a bunch, concurrently
 	wg := sync.WaitGroup{}
+	errs := make(chan error)
 
 	for s := 0; s < 4; s++ {
 		wg.Add(1)
@@ -165,26 +167,36 @@ func TestIpfsStressRead(t *testing.T) {
 				fname := path.Join(mnt.Dir, item)
 				rbuf, err := ioutil.ReadFile(fname)
 				if err != nil {
-					t.Fatal(err)
+					errs <- err
 				}
 
 				read, err := coreunix.Cat(nd.Context(), nd, item)
 				if err != nil {
-					t.Fatal(err)
+					errs <- err
 				}
 
 				data, err := ioutil.ReadAll(read)
 				if err != nil {
-					t.Fatal(err)
+					errs <- err
 				}
 
 				if !bytes.Equal(rbuf, data) {
-					t.Fatal("Incorrect Read!")
+					errs <- errors.New("Incorrect Read!")
 				}
 			}
 		}()
 	}
+
+	go func() {
 		wg.Wait()
+		close(errs)
+	}()
+
+	for err := range errs {
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
 }
 
 // Test writing a file and reading it back

merkledag/merkledag_test.go

@@ -2,6 +2,7 @@ package merkledag_test
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -193,32 +194,43 @@ func runBatchFetchTest(t *testing.T, read io.Reader) {
 	}
 
 	wg := sync.WaitGroup{}
+	errs := make(chan error)
+
 	for i := 1; i < len(dagservs); i++ {
 		wg.Add(1)
 		go func(i int) {
 			defer wg.Done()
 			first, err := dagservs[i].Get(ctx, k)
 			if err != nil {
-				t.Fatal(err)
+				errs <- err
 			}
 			fmt.Println("Got first node back.")
 
 			read, err := uio.NewDagReader(ctx, first, dagservs[i])
 			if err != nil {
-				t.Fatal(err)
+				errs <- err
 			}
 			datagot, err := ioutil.ReadAll(read)
 			if err != nil {
-				t.Fatal(err)
+				errs <- err
 			}
 
 			if !bytes.Equal(datagot, expected) {
-				t.Fatal("Got bad data back!")
+				errs <- errors.New("Got bad data back!")
 			}
 		}(i)
 	}
 
+	go func() {
 		wg.Wait()
+		close(errs)
+	}()
+
+	for err := range errs {
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
 }
 
 func TestRecursiveAdd(t *testing.T) {

test/supernode_client/main.go

@@ -142,6 +142,7 @@ func sizeOfIthFile(i int64) int64 {
 }
 
 func runFileAddingWorker(n *core.IpfsNode) error {
+	errs := make(chan error)
 	go func() {
 		var i int64
 		for i = 1; i < math.MaxInt32; i++ {
@@ -149,17 +150,26 @@ func runFileAddingWorker(n *core.IpfsNode) error {
 			go func() {
 				defer pipew.Close()
 				if err := random.WritePseudoRandomBytes(sizeOfIthFile(i), pipew, *seed); err != nil {
-					log.Fatal(err)
+					errs <- err
 				}
 			}()
 			k, err := coreunix.Add(n, piper)
 			if err != nil {
-				log.Fatal(err)
+				errs <- err
 			}
 			log.Println("added file", "seed", *seed, "#", i, "key", k, "size", unit.Information(sizeOfIthFile(i)))
 			time.Sleep(1 * time.Second)
 		}
 	}()
+
+	var i int64
+	for i = 0; i < math.MaxInt32; i++ {
+		err := <-errs
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
 	return nil
 }
 
@@ -180,18 +190,20 @@ func runFileCattingWorker(ctx context.Context, n *core.IpfsNode) error {
 		return err
 	}
 
+	errs := make(chan error)
+
 	go func() {
 		defer dummy.Close()
 		var i int64 = 1
 		for {
 			buf := new(bytes.Buffer)
 			if err := random.WritePseudoRandomBytes(sizeOfIthFile(i), buf, *seed); err != nil {
-				log.Fatal(err)
+				errs <- err
 			}
 			// add to a dummy node to discover the key
 			k, err := coreunix.Add(dummy, bytes.NewReader(buf.Bytes()))
 			if err != nil {
-				log.Fatal(err)
+				errs <- err
 			}
 			e := elog.EventBegin(ctx, "cat", logging.LoggableF(func() map[string]interface{} {
 				return map[string]interface{}{
@@ -212,6 +224,12 @@ func runFileCattingWorker(ctx context.Context, n *core.IpfsNode) error {
 			time.Sleep(time.Second)
 		}
 	}()
+
+	err = <- errs
+	if err != nil {
+		log.Fatal(err)
+	}
+
 	return nil
 }