Add an initial native test on host environment

This CL adds an initial native test that runs on host
environment, from which we can extend the coverage of native
test.

BUG: 13754552
Change-Id: I0af9d1b5dd049c83b955f5b05add4b39f3cfcc6c

5 files changed, 99 insertions, 1 deletions

diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index c1372bd70..5c117cea9 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -87,6 +87,8 @@ LOCAL_NDK_STL_VARIANT := c++_static
 LOCAL_LDFLAGS += -ldl
 
 include $(BUILD_SHARED_LIBRARY)
-
 #################### Clean up the tmp vars
 include $(LOCAL_PATH)/CleanupNativeFileList.mk
+
+#################### Unit test on host environment
+include $(LOCAL_PATH)/HostUnitTests.mk
diff --git a/native/jni/CleanupNativeFileList.mk b/native/jni/CleanupNativeFileList.mk
index 5420f16f9..1738f8c58 100644
--- a/native/jni/CleanupNativeFileList.mk
+++ b/native/jni/CleanupNativeFileList.mk
@@ -13,5 +13,6 @@
 # limitations under the License.
 
 LATIN_IME_CORE_SRC_FILES :=
+LATIN_IME_CORE_TEST_FILES :=
 LATIN_IME_JNI_SRC_FILES :=
 LATIN_IME_SRC_DIR :=
diff --git a/native/jni/HostUnitTests.mk b/native/jni/HostUnitTests.mk
new file mode 100644
index 000000000..828edce61
--- /dev/null
+++ b/native/jni/HostUnitTests.mk
@@ -0,0 +1,53 @@
+# 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.
+
+LOCAL_PATH := $(call my-dir)
+
+######################################
+include $(CLEAR_VARS)
+
+include $(LOCAL_PATH)/NativeFileList.mk
+
+#################### Host library for unit test
+# TODO: Remove -std=c++11 once it is set by default on host build.
+LATIN_IME_SRC_DIR := src
+LOCAL_CFLAGS += -std=c++11 -Wno-unused-parameter -Wno-unused-function
+LOCAL_CLANG := true
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(LATIN_IME_SRC_DIR)
+LOCAL_IS_HOST_MODULE := true
+LOCAL_MODULE := liblatinime_host_static_for_unittests
+LOCAL_MODULE_TAGS := optional
+LOCAL_NDK_STL_VARIANT := c++_static
+LOCAL_SRC_FILES := $(addprefix $(LATIN_IME_SRC_DIR)/, $(LATIN_IME_CORE_SRC_FILES))
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+#################### Host native tests
+include $(CLEAR_VARS)
+LATIN_IME_TEST_SRC_DIR := tests
+# TODO: Remove -std=c++11 once it is set by default on host build.
+LOCAL_CFLAGS += -std=c++11 -Wno-unused-parameter -Wno-unused-function
+LOCAL_CLANG := true
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/$(LATIN_IME_SRC_DIR)
+LOCAL_IS_HOST_MODULE := true
+LOCAL_MODULE := liblatinime_host_unittests
+LOCAL_MODULE_TAGS := tests
+LOCAL_NDK_STL_VARIANT := c++_static
+LOCAL_SRC_FILES := $(addprefix $(LATIN_IME_TEST_SRC_DIR)/, $(LATIN_IME_CORE_TEST_FILES))
+LOCAL_STATIC_LIBRARIES += liblatinime_host_static_for_unittests libgtest_host libgtest_main_host
+include $(BUILD_HOST_NATIVE_TEST)
+
+#################### Clean up the tmp vars
+LATIN_IME_SRC_DIR :=
+LATIN_IME_TEST_SRC_DIR :=
+include $(LOCAL_PATH)/CleanupNativeFileList.mk
diff --git a/native/jni/NativeFileList.mk b/native/jni/NativeFileList.mk
index 2ee4caa42..3da9d5632 100644
--- a/native/jni/NativeFileList.mk
+++ b/native/jni/NativeFileList.mk
@@ -99,3 +99,6 @@ LATIN_IME_CORE_SRC_FILES := \
         char_utils.cpp \
         log_utils.cpp \
         time_keeper.cpp)
+
+LATIN_IME_CORE_TEST_FILES := \
+    utils/autocorrection_threshold_utils_test.cpp
diff --git a/native/jni/tests/utils/autocorrection_threshold_utils_test.cpp b/native/jni/tests/utils/autocorrection_threshold_utils_test.cpp
new file mode 100644
index 000000000..cc8db700f
--- /dev/null
+++ b/native/jni/tests/utils/autocorrection_threshold_utils_test.cpp
@@ -0,0 +1,39 @@
+/*
+ * 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/autocorrection_threshold_utils.h"
+
+#include <gtest/gtest.h>
+
+#include <vector>
+
+namespace latinime {
+namespace {
+
+int CalcEditDistance(const std::vector<int> &before,
+        const std::vector<int> &after) {
+    return AutocorrectionThresholdUtils::editDistance(
+            &before[0], before.size(), &after[0], after.size());
+}
+
+TEST(AutocorrectionThresholdUtilsTest, SameData) {
+    EXPECT_EQ(0, CalcEditDistance({1}, {1}));
+    EXPECT_EQ(0, CalcEditDistance({2, 2}, {2, 2}));
+    EXPECT_EQ(0, CalcEditDistance({3, 3, 3}, {3, 3, 3}));
+}
+
+}  // namespace
+}  // namespace latinime