commit 18838bcf7d0b61a31d039615287fb3a5ca189231
author Cody Heiner <codyheiner@google.com> Wed Apr 05 16:52:27 2023 -0700
committer Cody Heiner <codyheiner@google.com> Tue Apr 11 00:02:54 2023 +0000
tree 9496b30f5884f998fb8e1dd4aa458a02f5fdc6e7
parent 3704cb3be5100dd9f8ad85f4b7ac6d3b0459d10f

Add `front` and `back` methods to RingBuffer

Test: Corresponding added RingBuffer tests pass
(`atest libinput_tests`)

Bug: 268245099
Change-Id: If330940e67e70d809748b2aaa6156bed835c6c9d

libs/input/tests/RingBuffer_test.cpp

diff --git a/libs/input/tests/RingBuffer_test.cpp b/libs/input/tests/RingBuffer_test.cpp
index 8a6ef4c..a2ef658 100644
--- a/libs/input/tests/RingBuffer_test.cpp
+++ b/libs/input/tests/RingBuffer_test.cpp
@@ -118,6 +118,21 @@
     EXPECT_EQ(0u, d.capacity());
 }
 
+TEST(RingBufferTest, FrontBackAccess) {
+    RingBuffer<int> buffer(/*capacity=*/2);
+    buffer.pushBack(1);
+    EXPECT_EQ(1, buffer.front());
+    EXPECT_EQ(1, buffer.back());
+
+    buffer.pushFront(0);
+    EXPECT_EQ(0, buffer.front());
+    EXPECT_EQ(1, buffer.back());
+
+    buffer.pushFront(-1);
+    EXPECT_EQ(-1, buffer.front());
+    EXPECT_EQ(0, buffer.back());
+}
+
 TEST(RingBufferTest, Subscripting) {
     RingBuffer<int> buffer(/*capacity=*/2);
     buffer.pushBack(1);