Utf8Utils for dicttoolkit.

Bug: 10059681
Change-Id: Ie484ba8096823792f0ac663524d1c02d1be070e9

1 files changed, 85 insertions, 0 deletions

diff --git a/native/dicttoolkit/tests/utils/utf8_utils_test.cpp b/native/dicttoolkit/tests/utils/utf8_utils_test.cpp
new file mode 100644
index 000000000..9c59a8b05
--- /dev/null
+++ b/native/dicttoolkit/tests/utils/utf8_utils_test.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "utils/utf8_utils.h"
+
+#include <gtest/gtest.h>
+
+#include <vector>
+
+#include "utils/int_array_view.h"
+
+namespace latinime {
+namespace dicttoolkit {
+namespace {
+
+TEST(Utf8UtilsTests, TestGetCodePoints) {
+    {
+        const std::vector<int> codePoints = Utf8Utils::getCodePoints("");
+        EXPECT_EQ(0u, codePoints.size());
+    }
+    {
+        const std::vector<int> codePoints = Utf8Utils::getCodePoints("test");
+        EXPECT_EQ(4u, codePoints.size());
+        EXPECT_EQ('t', codePoints[0]);
+        EXPECT_EQ('e', codePoints[1]);
+        EXPECT_EQ('s', codePoints[2]);
+        EXPECT_EQ('t', codePoints[3]);
+    }
+    {
+        const std::vector<int> codePoints = Utf8Utils::getCodePoints(u8"\u3042a\u03C2\u0410");
+        EXPECT_EQ(4u, codePoints.size());
+        EXPECT_EQ(0x3042, codePoints[0]); // HIRAGANA LETTER A
+        EXPECT_EQ('a', codePoints[1]);
+        EXPECT_EQ(0x03C2, codePoints[2]); // CYRILLIC CAPITAL LETTER A
+        EXPECT_EQ(0x0410, codePoints[3]); // GREEK SMALL LETTER FINAL SIGMA
+    }
+    {
+        const std::vector<int> codePoints = Utf8Utils::getCodePoints(u8"\U0001F36A?\U0001F752");
+        EXPECT_EQ(3u, codePoints.size());
+        EXPECT_EQ(0x1F36A, codePoints[0]); // COOKIE
+        EXPECT_EQ('?', codePoints[1]);
+        EXPECT_EQ(0x1F752, codePoints[2]); // ALCHEMICAL SYMBOL FOR STARRED TRIDENT
+    }
+
+    // Redundant UTF-8 sequences must be rejected.
+    EXPECT_TRUE(Utf8Utils::getCodePoints("\xC0\xAF").empty());
+    EXPECT_TRUE(Utf8Utils::getCodePoints("\xE0\x80\xAF").empty());
+    EXPECT_TRUE(Utf8Utils::getCodePoints("\xF0\x80\x80\xAF").empty());
+}
+
+TEST(Utf8UtilsTests, TestGetUtf8String) {
+    {
+        const std::vector<int> codePoints = {'t', 'e', 's', 't'};
+        EXPECT_EQ("test", Utf8Utils::getUtf8String(CodePointArrayView(codePoints)));
+    }
+    {
+        const std::vector<int> codePoints = {
+                0x00E0 /* LATIN SMALL LETTER A WITH GRAVE */,
+                0x03C2 /* GREEK SMALL LETTER FINAL SIGMA */,
+                0x0430 /* CYRILLIC SMALL LETTER A */,
+                0x3042 /* HIRAGANA LETTER A */,
+                0x1F36A /* COOKIE */,
+                0x1F752 /* ALCHEMICAL SYMBOL FOR STARRED TRIDENT */
+        };
+        EXPECT_EQ(u8"\u00E0\u03C2\u0430\u3042\U0001F36A\U0001F752",
+                Utf8Utils::getUtf8String(CodePointArrayView(codePoints)));
+    }
+}
+
+} // namespace
+} // namespace dicttoolkit
+} // namespace latinime