Implement IntArrayView::split for dicttoolkit.

Bug: 10059681
Change-Id: Ic29e79d049bb532727cf5cb1e529fec5d35156ed

1 files changed, 47 insertions, 0 deletions

diff --git a/native/jni/tests/utils/int_array_view_test.cpp b/native/jni/tests/utils/int_array_view_test.cpp
index 4757a416b..2fce633f5 100644
--- a/native/jni/tests/utils/int_array_view_test.cpp
+++ b/native/jni/tests/utils/int_array_view_test.cpp
@@ -151,5 +151,52 @@ TEST(IntArrayViewTest, TestToVector) {
     EXPECT_EQ(std::vector<int>(), CodePointArrayView().toVector());
 }
 
+TEST(IntArrayViewTest, TestSplit) {
+    EXPECT_TRUE(IntArrayView().split(0, 0).empty());
+    {
+        const auto intArrayViews = IntArrayView().split(0, 1);
+        EXPECT_EQ(1u, intArrayViews.size());
+        EXPECT_TRUE(intArrayViews[0].empty());
+    }
+    {
+        const auto intArrayViews = IntArrayView().split(0, 100);
+        EXPECT_EQ(1u, intArrayViews.size());
+        EXPECT_TRUE(intArrayViews[0].empty());
+    }
+
+    const std::vector<int> intVector = {1, 2, 3, 3, 2, 3};
+    const IntArrayView intArrayView(intVector);
+    {
+        const auto intArrayViews = intArrayView.split(2);
+        EXPECT_EQ(3u, intArrayViews.size());
+        EXPECT_EQ(std::vector<int>({1}), intArrayViews[0].toVector());
+        EXPECT_EQ(std::vector<int>({3, 3}), intArrayViews[1].toVector());
+        EXPECT_EQ(std::vector<int>({3}), intArrayViews[2].toVector());
+    }
+    {
+        const auto intArrayViews = intArrayView.split(2, 2);
+        EXPECT_EQ(2u, intArrayViews.size());
+        EXPECT_EQ(std::vector<int>({1}), intArrayViews[0].toVector());
+        EXPECT_EQ(std::vector<int>({3, 3, 2, 3}), intArrayViews[1].toVector());
+    }
+    {
+        const auto intArrayViews = intArrayView.split(2, 1);
+        EXPECT_EQ(1u, intArrayViews.size());
+        EXPECT_EQ(intVector, intArrayViews[0].toVector());
+    }
+    {
+        const auto intArrayViews = intArrayView.split(2, 0);
+        EXPECT_EQ(0u, intArrayViews.size());
+    }
+    {
+        const auto intArrayViews = intArrayView.split(3);
+        EXPECT_EQ(4u, intArrayViews.size());
+        EXPECT_EQ(std::vector<int>({1, 2}), intArrayViews[0].toVector());
+        EXPECT_EQ(std::vector<int>(), intArrayViews[1].toVector());
+        EXPECT_EQ(std::vector<int>({2}), intArrayViews[2].toVector());
+        EXPECT_EQ(std::vector<int>(), intArrayViews[3].toVector());
+    }
+}
+
 }  // namespace
 }  // namespace latinime