catch errors on closing written-to files

api_test.go

@@ -1785,6 +1785,8 @@ func writeTestFile(t *testing.T, filename, content string) string {
 	if err != nil {
 		t.Fatalf("could not write string %v", err)
 	}
-	defer f.Close()
+	if err := f.Close(); err != nil {
+		t.Fatalf("could not close file %v", err)
+	}
 	return fname
 }

cmd/slurp/slurp.go

@@ -137,7 +137,6 @@ func (r *stateMachine) Upload() error {
 }
 
 func UploadTar(srcFile string, client *pilosa.InternalClient, profile, host string) error {
-
 	f, err := os.Open(srcFile)
 	if err != nil {
 		return (err)

holder.go

@@ -1180,13 +1180,11 @@ func (h *Holder) logStartup() error {
 		return errors.Wrap(err, "opening startup log")
 	}
 
-	defer f.Close()
-
 	if _, err = f.WriteString(logLine); err != nil {
 		return errors.Wrap(err, "writing startup log")
 	}
 
-	return nil
+	return f.Close()
 }
 
 // holderSyncer is an active anti-entropy tool that compares the local holder

rbf/tx_test.go

@@ -1315,9 +1315,10 @@ func mustWritePage(tb testing.TB, path string, pgno uint32, buf []byte) {
 	if err != nil {
 		tb.Fatal(err)
 	}
-	defer f.Close()
 
 	if _, err := f.WriteAt(buf, int64(pgno)*rbf.PageSize); err != nil {
 		tb.Fatal(err)
+	} else if err := f.Close(); err != nil {
+		tb.Fatal(err)
 	}
 }

server/grpc_test.go

@@ -1891,10 +1891,12 @@ func writeTestFile(t *testing.T, filename, content string) string {
 	fname := filepath.Join(t.TempDir(), filename)
 	f, err := os.Create(fname)
 	if err != nil {
-		panic(filename)
+		t.Fatal(err)
 	}
 	io.WriteString(f, content)
-	defer f.Close()
+	if err := f.Close(); err != nil {
+		t.Fatal(err)
+	}
 	return fname
 }