[Mac] Updates the unit test with some minor tweaks to the Browser Actions con...

chrome/browser/cocoa/extensions/browser_actions_container_view_unittest.mm

Index: chrome/browser/cocoa/extensions/browser_actions_container_view_unittest.mm
===================================================================
--- chrome/browser/cocoa/extensions/browser_actions_container_view_unittest.mm	(revision 48636)
+++ chrome/browser/cocoa/extensions/browser_actions_container_view_unittest.mm	(working copy)
@@ -11,6 +11,7 @@
 namespace {
 
 const CGFloat kContainerHeight = 15.0;
+const CGFloat kMinimumContainerWidth = 10.0;
 
 class BrowserActionsContainerViewTest : public CocoaTest {
  public:
@@ -30,4 +31,22 @@
   EXPECT_TRUE([view_ isHidden]);
 }
 
+TEST_F(BrowserActionsContainerViewTest, SetWidthTests) {
+  // Try setting below the minimum width (10 pixels).
+  [view_ resizeToWidth:5.0 animate:NO];
+  EXPECT_EQ(kMinimumContainerWidth, NSWidth([view_ frame])) << "Frame width is "
+      << "less than the minimum allowed.";
+  // Since the frame expands to the left, the x-position delta value will be
+  // negative.
+  EXPECT_EQ(-kMinimumContainerWidth, [view_ resizeDeltaX]);
+
+  [view_ resizeToWidth:35.0 animate:NO];
+  EXPECT_EQ(35.0, NSWidth([view_ frame]));
+  EXPECT_EQ(-25.0, [view_ resizeDeltaX]);
+
+  [view_ resizeToWidth:20.0 animate:NO];
+  EXPECT_EQ(20.0, NSWidth([view_ frame]));
+  EXPECT_EQ(15.0, [view_ resizeDeltaX]);
+}
+
 }  // namespace