net: remove max timeout from TestDialTimeout

Just rely on the testsuite timeout. If this hangs we will hopefully
get some real information.

Fixes #57475

Change-Id: I18dc5cae54ad5d2d8cc472056b8a3b4d5455c8b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/476356
Run-TryBot: Ian Lance Taylor <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Bryan Mills <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>

Author: ianlancetaylor

src/net/timeout_test.go

@@ -24,18 +24,17 @@ var dialTimeoutTests = []struct {
 	delta   time.Duration // for deadline
 
 	guard time.Duration
-	max   time.Duration
 }{
 	// Tests that dial timeouts, deadlines in the past work.
-	{-5 * time.Second, 0, -5 * time.Second, 100 * time.Millisecond},
-	{0, -5 * time.Second, -5 * time.Second, 100 * time.Millisecond},
-	{-5 * time.Second, 5 * time.Second, -5 * time.Second, 100 * time.Millisecond}, // timeout over deadline
-	{-1 << 63, 0, time.Second, 100 * time.Millisecond},
-	{0, -1 << 63, time.Second, 100 * time.Millisecond},
-
-	{50 * time.Millisecond, 0, 100 * time.Millisecond, time.Second},
-	{0, 50 * time.Millisecond, 100 * time.Millisecond, time.Second},
-	{50 * time.Millisecond, 5 * time.Second, 100 * time.Millisecond, time.Second}, // timeout over deadline
+	{-5 * time.Second, 0, -5 * time.Second},
+	{0, -5 * time.Second, -5 * time.Second},
+	{-5 * time.Second, 5 * time.Second, -5 * time.Second}, // timeout over deadline
+	{-1 << 63, 0, time.Second},
+	{0, -1 << 63, time.Second},
+
+	{50 * time.Millisecond, 0, 100 * time.Millisecond},
+	{0, 50 * time.Millisecond, 100 * time.Millisecond},
+	{50 * time.Millisecond, 5 * time.Second, 100 * time.Millisecond}, // timeout over deadline
 }
 
 func TestDialTimeout(t *testing.T) {
@@ -59,35 +58,25 @@ func TestDialTimeout(t *testing.T) {
 			})
 		}
 
-		ch := make(chan error)
 		d := Dialer{Timeout: tt.timeout}
 		if tt.delta != 0 {
 			d.Deadline = time.Now().Add(tt.delta)
 		}
-		max := time.NewTimer(tt.max)
-		defer max.Stop()
-		go func() {
-			// This dial never starts to send any TCP SYN
-			// segment because of above socket filter and
-			// test hook.
-			c, err := d.Dial("tcp", "127.0.0.1:0")
-			if err == nil {
-				err = fmt.Errorf("unexpectedly established: tcp:%s->%s", c.LocalAddr(), c.RemoteAddr())
-				c.Close()
-			}
-			ch <- err
-		}()
 
-		select {
-		case <-max.C:
-			t.Fatalf("#%d: Dial didn't return in an expected time", i)
-		case err := <-ch:
-			if perr := parseDialError(err); perr != nil {
-				t.Errorf("#%d: %v", i, perr)
-			}
-			if nerr, ok := err.(Error); !ok || !nerr.Timeout() {
-				t.Fatalf("#%d: %v", i, err)
-			}
+		// This dial never starts to send any TCP SYN
+		// segment because of above socket filter and
+		// test hook.
+		c, err := d.Dial("tcp", "127.0.0.1:0")
+		if err == nil {
+			err = fmt.Errorf("unexpectedly established: tcp:%s->%s", c.LocalAddr(), c.RemoteAddr())
+			c.Close()
+		}
+
+		if perr := parseDialError(err); perr != nil {
+			t.Errorf("#%d: %v", i, perr)
+		}
+		if nerr, ok := err.(Error); !ok || !nerr.Timeout() {
+			t.Fatalf("#%d: %v", i, err)
 		}
 	}
 }