Issue #41 - Bring method of determining IE version up to date

test/RegistryTest.cpp

Index: test/RegistryTest.cpp
===================================================================
new file mode 100644
--- /dev/null
+++ b/test/RegistryTest.cpp
@@ -0,0 +1,91 @@
+/*
+ * This file is part of Adblock Plus <http://adblockplus.org/>,
+ * Copyright (C) 2014 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gtest/gtest.h>
+
+#include "../src/shared/Registry.h"
+#include "../src/shared/IE_Version.h"
+
+using namespace AdblockPlus;
+
+//----------------------------------
+// Registry_Key
+//----------------------------------
+TEST(Registry_Test, simple_0)
+{
+  ASSERT_NO_THROW({ auto r = Registry_Key(HKEY_CLASSES_ROOT, L"CLSID"); });
+}
+
+TEST(Registry_Test, constructor_illegal_argument_0)
+{
+  ASSERT_ANY_THROW({ auto r1 = Registry_Key(HKEY_CLASSES_ROOT, L""); });
+}
+
+TEST(Registry_Test, value_notfound_0)
+{
+  auto r1 = Registry_Key(HKEY_CLASSES_ROOT, L"CLSID");
+  ASSERT_ANY_THROW({ r1.value_wstring(L"nonexistent"); });
+}
+
+//----------------------------------
+// IE_Version
+//----------------------------------
+/*
+ * Exact version tests enabled by default.
+ * If they are disabled, gtext will report 2 disabled tests.
+ */
+#if !defined(DISABLE_EXACT_TESTS)
+#define exact(x) exact_##x
+#else
+#define exact(x) DISABLED_exact_##x
+#endif
+/*
+ * Define a default version as the current version of IE in general release.
+ * Predefine on the command line to compile tests for non-standard development environments.
+ */
+#ifndef INSTALLED_IE_VERSION
+#define INSTALLED_IE_VERSION 11
+#endif
+
+TEST(IE_Version_Test, sanity_string)
+{
+  std::wstring version = AdblockPlus::IE::InstalledVersionString();
+  ASSERT_FALSE(version.length() == 0); // separate test for default value
+  ASSERT_TRUE(version.length() >= 2);
+}
+
+TEST(IE_Version_Test, sanity_major)
+{
+  int version = AdblockPlus::IE::InstalledMajorVersion();
+  ASSERT_NE(version, 0); // separate test for default value
+  ASSERT_GE(version, 6);
+  ASSERT_LE(version, 12);
+  EXPECT_NE(version, 12); // This check will point out when the test needs updating.
+}
+
+TEST(IE_Version_Test, exact(string))
+{
+    std::wstring version = AdblockPlus::IE::InstalledVersionString();
+    std::wstring expected = std::to_wstring(INSTALLED_IE_VERSION) + L".";
+    ASSERT_EQ(expected, version.substr(0, expected.length()));
+}
+
+TEST(IE_Version_Test, exact(major))
+{
+  int version = AdblockPlus::IE::InstalledMajorVersion();
+  ASSERT_EQ(version, INSTALLED_IE_VERSION);
+}