Increase test tolerance to reflect observed errors in bug 435441 comments 103 and 105, and handle timer firing after 8 seconds (comment 104).

layout/style/test/test_transitions.html

@@ -402,7 +402,7 @@ function check_transition_value(func, start_time, end_time,
             time_portion = 1;
         // Assume a small error since bezier computation can be off slightly.
         // (This test's computation is probably more accurate than Mozilla's.)
-        var value_portion = func(time_portion) + error_direction * 0.0005;
+        var value_portion = func(time_portion) + error_direction * 0.0007;
         if (value_portion < 0)
             value_portion = 0;
         else if (value_portion > 1)
@@ -452,8 +452,14 @@ function check_ref_range()
     // This is the only test where we compare the progress of the
     // transitions to an actual time; we need considerable tolerance at
     // the low end (we are using half a second).
-    var expected_range = [ (gCurrentTime - gStartTime2 - 500) / 8,
+    var expected_range = [ (gCurrentTime - gStartTime2 - 750) / 8,
                            (Date.now() - gStartTime1 + 20) / 8 ];
+    if (expected_range[0] > 1000) {
+        expected_range[0] = 1000;
+    }
+    if (expected_range[1] > 1000) {
+        expected_range[1] = 1000;
+    }
     function check(desc, value) {
         ok(expected_range[0] <= value && value <= expected_range[1],
            desc + ": computed value " + value + "px should be between " +