Fixed timing issues with "since/until last week" tests.

dist/sugar.js

@@ -3328,9 +3328,9 @@
     // effect on our calculation here, so subtract by 1 to ensure that the
     // starting point has not already overshot our target date.
     if (unit.ambiguous) {
-      num -= 1;
       d1 = cloneDate(d1);
       if (num) {
+        num -= 1;
         advanceDate(d1, unit.name, num);
       }
       while (d1 < d2) {

lib/date.js

@@ -912,9 +912,9 @@ function getTimeDistanceForUnit(d1, d2, unit) {
   // effect on our calculation here, so subtract by 1 to ensure that the
   // starting point has not already overshot our target date.
   if (unit.ambiguous) {
-    num -= 1;
     d1 = cloneDate(d1);
     if (num) {
+      num -= 1;
       advanceDate(d1, unit.name, num);
     }
     while (d1 < d2) {

test/suite/suite.js

@@ -80,7 +80,7 @@
   }
 
   equalWithMargin = function (actual, expected, margin, message) {
-    equal((actual > expected - margin) && (actual < expected + margin), true, message, null, 1);
+    equal((actual >= expected - margin) && (actual <= expected + margin), true, message, null, 1);
   }
 
   // Array content is equal, but order may differ

test/tests/date.js

@@ -2616,18 +2616,23 @@ namespace('Date', function () {
     equal((secSince <= actualSecSince + 5) && (secSince >= actualSecSince - 5), true, 'seconds since last week');
     equal((secUntil <= actualSecUntil + 5) && (secUntil >= actualSecUntil - 5), true, 'seconds until last week');
 
-    equal(run(new Date(), 'minutesSince', ['last week']), Math.round(offset / 1000 / 60), 'minutes since last week');
-    equal(run(new Date(), 'minutesUntil', ['last week']), Math.round(-offset / 1000 / 60), 'minutes until last week');
-    equal(run(new Date(), 'hoursSince', ['last week']), Math.round(offset / 1000 / 60 / 60), 'hours since last week');
-    equal(run(new Date(), 'hoursUntil', ['last week']), Math.round(-offset / 1000 / 60 / 60), 'hours until last week');
-    equal(run(new Date(), 'daysSince', ['last week']), Math.round(offset / 1000 / 60 / 60 / 24), 'days since last week');
-    equal(run(new Date(), 'daysUntil', ['last week']), Math.round(-offset / 1000 / 60 / 60 / 24), 'days until last week');
-    equal(run(new Date(), 'weeksSince', ['last week']), Math.round(offset / 1000 / 60 / 60 / 24 / 7), 'weeks since last week');
-    equal(run(new Date(), 'weeksUntil', ['last week']), Math.round(-offset / 1000 / 60 / 60 / 24 / 7), 'weeks until last week');
-    equal(run(new Date(), 'monthsSince', ['last week']), Math.round(offset / 1000 / 60 / 60 / 24 / 30.4375), 'months since last week');
-    equal(run(new Date(), 'monthsUntil', ['last week']), Math.round(-offset / 1000 / 60 / 60 / 24 / 30.4375), 'months until last week');
-    equal(run(new Date(), 'yearsSince', ['last week']), Math.round(offset / 1000 / 60 / 60 / 24 / 365.25), 'years since last week');
-    equal(run(new Date(), 'yearsUntil', ['last week']), Math.round(-offset / 1000 / 60 / 60 / 24 / 365.25), 'years until the last day of 2011');
+    function fromLastWeek(method) {
+      return run(new Date(), method, ['last week'])
+    }
+
+    equalWithMargin(fromLastWeek('minutesSince'), Math.round(offset / 1000 / 60), 1, 'minutes since last week');
+    equalWithMargin(fromLastWeek('minutesUntil'), Math.round(-offset / 1000 / 60), 1, 'minutes until last week');
+    equalWithMargin(fromLastWeek('hoursSince'),   Math.round(offset / 1000 / 60 / 60), 1, 'hours since last week');
+    equalWithMargin(fromLastWeek('hoursUntil'),   Math.round(-offset / 1000 / 60 / 60), 1, 'hours until last week');
+    equalWithMargin(fromLastWeek('daysSince'),    Math.round(offset / 1000 / 60 / 60 / 24), 1, 'days since last week');
+    equalWithMargin(fromLastWeek('daysUntil'),    Math.round(-offset / 1000 / 60 / 60 / 24), 1, 'days until last week');
+    equalWithMargin(fromLastWeek('weeksSince'),   Math.round(offset / 1000 / 60 / 60 / 24 / 7), 1, 'weeks since last week');
+    equalWithMargin(fromLastWeek('weeksUntil'),   Math.round(-offset / 1000 / 60 / 60 / 24 / 7), 1, 'weeks until last week');
+
+    equal(fromLastWeek('monthsSince'),   0, 'months since last week');
+    equal(fromLastWeek('monthsUntil'),  -0, 'months until last week');
+    equal(fromLastWeek('yearsSince'),    0, 'years since last week');
+    equal(fromLastWeek('yearsUntil'),   -0, 'years until last week');
 
     // Issue #236
     var d = getRelativeDate(0, 0, 0, 14);