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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/policy/dlp/dlp_content_tab_helper.h"
#include "base/memory/raw_ptr.h"
#include "chrome/browser/chromeos/policy/dlp/test/mock_dlp_content_observer.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/tabs/tab_activity_simulator.h"
#include "chrome/test/base/chrome_render_view_host_test_harness.h"
#include "chrome/test/base/test_browser_window.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/test/navigation_simulator.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace policy {
using testing::_;
using testing::Return;
namespace {
const DlpContentRestrictionSet kEmptyRestrictionSet;
const DlpContentRestrictionSet kNonEmptyRestrictionSet(
DlpContentRestriction::kScreenshot,
DlpRulesManager::Level::kBlock);
} // namespace
class DlpContentTabHelperTest : public ChromeRenderViewHostTestHarness {
protected:
void SetUp() override {
ChromeRenderViewHostTestHarness::SetUp();
scoped_dlp_content_observer_ =
std::make_unique<ScopedDlpContentObserverForTesting>(
&mock_dlp_content_observer_);
// Initialize browser.
const Browser::CreateParams params(profile(), /*user_gesture=*/true);
browser_ = CreateBrowserWithTestWindowForParams(params);
tab_strip_model_ = browser_->tab_strip_model();
}
void TearDown() override {
tab_strip_model_->CloseAllTabs();
browser_.reset();
scoped_dlp_content_observer_.reset();
ChromeRenderViewHostTestHarness::TearDown();
}
DlpContentTabHelper::ScopedIgnoreDlpRulesManager ignore_dlp_rules_manager_{
DlpContentTabHelper::IgnoreDlpRulesManagerForTesting()};
MockDlpContentObserver mock_dlp_content_observer_;
std::unique_ptr<ScopedDlpContentObserverForTesting>
scoped_dlp_content_observer_;
TabActivitySimulator tab_activity_simulator_;
raw_ptr<TabStripModel, DanglingUntriaged> tab_strip_model_;
std::unique_ptr<Browser> browser_;
};
TEST_F(DlpContentTabHelperTest, NotCreatedForIncognito) {
const Browser::CreateParams params(
profile()->GetPrimaryOTRProfile(/*create_if_needed=*/true),
/*user_gesture=*/true);
auto browser = CreateBrowserWithTestWindowForParams(params);
content::WebContents* web_contents =
tab_activity_simulator_.AddWebContentsAndNavigate(
browser->tab_strip_model(), GURL("https://example.com"));
EXPECT_EQ(nullptr, DlpContentTabHelper::FromWebContents(web_contents));
// Close tabs before |browser| is destructed.
browser->tab_strip_model()->CloseAllTabs();
}
TEST_F(DlpContentTabHelperTest, NotConfidential) {
GURL kUrl = GURL("https://example.com");
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
GURL(), kEmptyRestrictionSet);
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
kUrl, kEmptyRestrictionSet);
EXPECT_CALL(mock_dlp_content_observer_, OnConfidentialityChanged(_, _))
.Times(0);
EXPECT_CALL(mock_dlp_content_observer_, OnVisibilityChanged(_)).Times(0);
content::WebContents* web_contents =
tab_activity_simulator_.AddWebContentsAndNavigate(tab_strip_model_, kUrl);
EXPECT_NE(nullptr, DlpContentTabHelper::FromWebContents(web_contents));
EXPECT_CALL(mock_dlp_content_observer_, OnWebContentsDestroyed(_)).Times(1);
}
TEST_F(DlpContentTabHelperTest, Confidential) {
GURL kUrl = GURL("https://example.com");
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
GURL(), kEmptyRestrictionSet);
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
kUrl, kNonEmptyRestrictionSet);
EXPECT_CALL(mock_dlp_content_observer_,
OnConfidentialityChanged(_, kNonEmptyRestrictionSet))
.Times(1);
EXPECT_CALL(mock_dlp_content_observer_, OnVisibilityChanged(_)).Times(0);
content::WebContents* web_contents =
tab_activity_simulator_.AddWebContentsAndNavigate(tab_strip_model_, kUrl);
EXPECT_NE(nullptr, DlpContentTabHelper::FromWebContents(web_contents));
EXPECT_CALL(mock_dlp_content_observer_,
OnConfidentialityChanged(_, kEmptyRestrictionSet))
.Times(1);
EXPECT_CALL(mock_dlp_content_observer_, OnWebContentsDestroyed(_)).Times(1);
}
TEST_F(DlpContentTabHelperTest, VisibilityChanged) {
GURL kUrl1 = GURL("https://example1.com");
GURL kUrl2 = GURL("https://example2.com");
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
GURL(), kEmptyRestrictionSet);
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
kUrl1, kNonEmptyRestrictionSet);
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
kUrl2, kEmptyRestrictionSet);
EXPECT_CALL(mock_dlp_content_observer_,
OnConfidentialityChanged(_, kNonEmptyRestrictionSet))
.Times(1);
EXPECT_CALL(mock_dlp_content_observer_, OnVisibilityChanged(_)).Times(0);
content::WebContents* web_contents1 =
tab_activity_simulator_.AddWebContentsAndNavigate(tab_strip_model_,
kUrl1);
content::WebContents* web_contents2 =
tab_activity_simulator_.AddWebContentsAndNavigate(tab_strip_model_,
kUrl2);
EXPECT_NE(nullptr, DlpContentTabHelper::FromWebContents(web_contents1));
EXPECT_NE(nullptr, DlpContentTabHelper::FromWebContents(web_contents2));
EXPECT_CALL(mock_dlp_content_observer_, OnVisibilityChanged(_)).Times(1);
tab_activity_simulator_.SwitchToTabAt(tab_strip_model_, 1);
EXPECT_CALL(mock_dlp_content_observer_, OnVisibilityChanged(_)).Times(1);
tab_activity_simulator_.SwitchToTabAt(tab_strip_model_, 0);
EXPECT_CALL(mock_dlp_content_observer_,
OnConfidentialityChanged(_, kEmptyRestrictionSet))
.Times(1);
EXPECT_CALL(mock_dlp_content_observer_, OnWebContentsDestroyed(_)).Times(2);
}
TEST_F(DlpContentTabHelperTest, SubFrameNavigation) {
GURL kNonConfidentialUrl = GURL("https://example.com");
GURL kConfidentialUrl = GURL("https://google.com");
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
GURL(), kEmptyRestrictionSet);
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
kNonConfidentialUrl, kEmptyRestrictionSet);
DlpContentRestrictionSet::SetRestrictionsForURLForTesting(
kConfidentialUrl, kNonEmptyRestrictionSet);
EXPECT_CALL(mock_dlp_content_observer_, OnConfidentialityChanged(_, _))
.Times(0);
EXPECT_CALL(mock_dlp_content_observer_, OnVisibilityChanged(_)).Times(0);
// Create WebContents.
content::WebContents* web_contents =
tab_activity_simulator_.AddWebContentsAndNavigate(tab_strip_model_,
kNonConfidentialUrl);
EXPECT_NE(nullptr, DlpContentTabHelper::FromWebContents(web_contents));
// Add subframe and navigate to confidential URL.
EXPECT_CALL(mock_dlp_content_observer_,
OnConfidentialityChanged(_, kNonEmptyRestrictionSet))
.Times(1);
content::RenderFrameHost* subframe =
content::NavigationSimulator::NavigateAndCommitFromDocument(
kConfidentialUrl, content::RenderFrameHostTester::For(
web_contents->GetPrimaryMainFrame())
->AppendChild("child"));
// Navigate away from confidential URL.
EXPECT_CALL(mock_dlp_content_observer_,
OnConfidentialityChanged(_, kEmptyRestrictionSet))
.Times(1);
content::NavigationSimulator::NavigateAndCommitFromDocument(
kNonConfidentialUrl, subframe);
EXPECT_CALL(mock_dlp_content_observer_, OnWebContentsDestroyed(_)).Times(1);
}
} // namespace policy
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