[vr] Bail on unhandled code points.

chrome/browser/android/vr_shell/textures/url_bar_texture_unittest.cc

+// Copyright 2017 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.
+
+#include "chrome/browser/android/vr_shell/textures/url_bar_texture.h"
+
+#include "base/bind.h"
+#include "base/macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkSurface.h"
+#include "ui/gfx/font_list.h"
+
+namespace vr_shell {
+
+namespace {
+
+static constexpr int kUrlWidth = 400;
+static constexpr int kUrlHeight = 30;
+
+class TestUrlBarTexture : public UrlBarTexture {
+ public:
+  TestUrlBarTexture();
+  ~TestUrlBarTexture() override {}
+
+  bool CanRenderURL(const GURL& gurl) {
+    failed_ = false;
+    SetURL(gurl);
+    RenderUrl(texture_size_, bounds_);
+    return !failed_;
+  }
+
+ private:
+  void OnUnsupportedFeature() { failed_ = true; }
+
+  gfx::Size texture_size_;
+  gfx::Rect bounds_;
+  bool failed_ = false;
+};
+
+TestUrlBarTexture::TestUrlBarTexture()
+    : UrlBarTexture(base::Bind(&TestUrlBarTexture::OnUnsupportedFeature,
+                               base::Unretained(this))),
+      texture_size_(kUrlWidth, kUrlHeight),
+      bounds_(kUrlWidth, kUrlHeight) {
+  gfx::FontList::SetDefaultFontDescription("Arial, Times New Roman, 15px");
+}
+
+}  // namespace
+
+TEST(UrlBarTexture, ElisionIsAnUnsupportedMode) {
+  TestUrlBarTexture texture;
+  GURL gurl(
+      "https://"
+      "thereisnopossiblewaythatthishostnamecouldbecontainedinthelimitedspacetha"
+      "tweareaffordedtousitsreallynotsomethingweshouldconsiderorplanfororpinour"
+      "hopesonlestwegetdisappointedor.sad.com");
+  EXPECT_FALSE(texture.CanRenderURL(gurl));
+}
+
+TEST(UrlBarTexture, ShortIsSweet) {

[cjgrant, 2017/05/25 17:47:25]

My CL adds more tests to the same (future) file.
s/ShortIsSweet/ShortUrlIsSupported/, and same with the next test?  Ie. really
describe what is actually being tested.

[Ian Vollick, 2017/05/26 03:48:09]

That name was from another CL, but nevertheless I was being cute and should have
had a more descriptive test name, even there. Hopefully the unit test name in
the latest patch set is better.

+  TestUrlBarTexture texture;
+  GURL gurl("https://short.com/");
+  EXPECT_TRUE(texture.CanRenderURL(gurl));
+}
+
+TEST(UrlBarTexture, LongPathsAreFine) {
+  TestUrlBarTexture texture;
+  GURL gurl(
+      "https://something.com/"
+      "thereisnopossiblewaythatthishostnamecouldbecontainedinthelimitedspacetha"
+      "tweareaffordedtousitsreallynotsomethingweshouldconsiderorplanfororpinour"
+      "hopesonlestwegetdisappointedorsad.com");
+  EXPECT_TRUE(texture.CanRenderURL(gurl));
+}
+
+}  // namespace vr_shell