Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/cocoa/tab_contents/overlayable_contents_controller_browsertest.mm

+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/ui/cocoa/tab_contents/overlayable_contents_controller.h"
+
+#include "chrome/browser/instant/instant_model.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/cocoa/browser_window_controller.h"
+#include "chrome/browser/ui/cocoa/tab_contents/overlay_drop_shadow_view.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
+#import "testing/gtest_mac.h"
+
+class OverlayableContentsControllerTest : public InProcessBrowserTest {
+ public:
+  OverlayableContentsControllerTest() {
+  }
+
+  virtual void SetUpOnMainThread() OVERRIDE {
+    web_contents_.reset(content::WebContents::Create(
+        content::WebContents::CreateParams(browser()->profile())));
+    controller_.reset([[OverlayableContentsController alloc]
+         initWithBrowser:browser()
+        windowController:nil]);
+    [[controller_ view] setFrame:NSMakeRect(0, 0, 100, 200)];
+    instant_model_.AddObserver([controller_ instantOverlayController]);
+  }
+
+  virtual void CleanUpOnMainThread() OVERRIDE {
+    instant_model_.RemoveObserver([controller_ instantOverlayController]);
+    controller_.reset();
+    web_contents_.reset();
+  }
+
+  void VerifyOverlayFrame(CGFloat expected_height, BOOL is_height_in_pixels) {
+    NSRect container_bounds = [[controller_ view] bounds];
+    NSRect overlay_frame = [web_contents_->GetView()->GetNativeView() frame];
+
+    EXPECT_EQ(NSMinX(container_bounds), NSMinX(overlay_frame));
+    EXPECT_EQ(NSWidth(container_bounds), NSWidth(overlay_frame));
+    if (is_height_in_pixels) {
+      EXPECT_EQ(expected_height, NSHeight(overlay_frame));
+      EXPECT_EQ(NSMaxY(container_bounds), NSMaxY(overlay_frame));
+    } else {
+      EXPECT_EQ((expected_height * NSHeight(container_bounds)) / 100,
+                 NSHeight(overlay_frame));
+      EXPECT_EQ(NSMaxY(container_bounds), NSMaxY(overlay_frame));
+    }
+  }
+
+ protected:
+  InstantModel instant_model_;
+  scoped_ptr<content::WebContents> web_contents_;
+  scoped_nsobject<OverlayableContentsController> controller_;
+};
+
+// Verify that the view is correctly laid out when size is specified in percent.
+IN_PROC_BROWSER_TEST_F(OverlayableContentsControllerTest, SizePerecent) {
+  CGFloat expected_height = 30;
+  BOOL is_height_in_pixels = NO;
+  instant_model_.SetOverlayState(
+      web_contents_.get(), expected_height, is_height_in_pixels);
+
+  EXPECT_NSEQ([web_contents_->GetView()->GetNativeView() superview],
+              [controller_ view]);
+  VerifyOverlayFrame(expected_height, is_height_in_pixels);
+
+  // Resize the view and verify that the overlay is also resized.
+  [[controller_ view] setFrameSize:NSMakeSize(300, 400)];
+  VerifyOverlayFrame(expected_height, is_height_in_pixels);
+}
+
+// Verify that the view is correctly laid out when size is specified in pixels.
+IN_PROC_BROWSER_TEST_F(OverlayableContentsControllerTest, SizePixels) {
+  CGFloat expected_height = 30;
+  BOOL is_height_in_pixels = YES;
+  instant_model_.SetOverlayState(
+      web_contents_.get(), expected_height, is_height_in_pixels);
+
+  EXPECT_NSEQ([web_contents_->GetView()->GetNativeView() superview],
+              [controller_ view]);
+  VerifyOverlayFrame(expected_height, is_height_in_pixels);
+
+  // Resize the view and verify that the overlay is also resized.
+  [[controller_ view] setFrameSize:NSMakeSize(300, 400)];
+  VerifyOverlayFrame(expected_height, is_height_in_pixels);
+}
+
+// Verify that a shadow is not shown when the overlay covers the entire page.
+IN_PROC_BROWSER_TEST_F(OverlayableContentsControllerTest, NoShadowFullHeight) {
+  instant_model_.SetOverlayState(web_contents_.get(), 100, NO);
+  EXPECT_FALSE([controller_ dropShadowView]);
+  EXPECT_FALSE([controller_ drawDropShadow]);
+}
+
+// Verify that a shadow is shown when the overlay is in search mode.
+IN_PROC_BROWSER_TEST_F(OverlayableContentsControllerTest, ShadowInSearch) {
+  instant_model_.SetOverlayState(web_contents_.get(), mode, 10, NO);
+  EXPECT_TRUE([controller_ dropShadowView]);
+  EXPECT_TRUE([controller_ drawDropShadow]);
+  EXPECT_NSEQ([controller_ view], [[controller_ dropShadowView] superview]);
+
+  NSRect dropShadowFrame = [[controller_ dropShadowView] frame];
+  NSRect controllerBounds = [[controller_ view] bounds];
+  EXPECT_EQ(NSWidth(controllerBounds), NSWidth(dropShadowFrame));
+  EXPECT_EQ([OverlayDropShadowView preferredHeight],
+            NSHeight(dropShadowFrame));
+}
+
+// Verify that the shadow is hidden when hiding the overlay.
+IN_PROC_BROWSER_TEST_F(OverlayableContentsControllerTest, HideShadow) {
+  instant_model_.SetOverlayState(web_contents_.get(), mode, 10, NO);
+  EXPECT_TRUE([controller_ dropShadowView]);
+
+  [controller_ onActivateTabWithContents:web_contents_.get()];
+  EXPECT_FALSE([controller_ dropShadowView]);
+}