From 44bea612ff47c2081acb8702bd63d98a6a5a8345 Mon Sep 17 00:00:00 2001
From: Sviatoslav Tsariov <slava982007@gmail.com>
Date: Mon, 13 May 2024 17:52:03 +0300
Subject: [PATCH] Added CircularBufferWithNestedCircularBuffer test

---
 test/libs/CircularBuffer_unittest.cpp | 41 +++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/test/libs/CircularBuffer_unittest.cpp b/test/libs/CircularBuffer_unittest.cpp
index 85dd686..99ddd4f 100644
--- a/test/libs/CircularBuffer_unittest.cpp
+++ b/test/libs/CircularBuffer_unittest.cpp
@@ -74,3 +74,44 @@ TEST_F(CircularBufferTest, FullAndEmpty) {
     // Try popping from an empty buffer
     EXPECT_EQ(buffer->popFront(item), ErrorCode::BUFFER_EMPTY);
 }
+
+// Test CircularBuffer with nested CircularBuffer
+TEST_F(CircularBufferTest, CircularBufferWithNestedCircularBuffer) {
+    CircularBuffer<CircularBuffer<char>*> charBuffer(2);
+
+    CircularBuffer<char> charSubBuffer1(3);
+    CircularBuffer<char> charSubBuffer2(3);
+
+    EXPECT_EQ(charSubBuffer1.pushBack('a'), ErrorCode::SUCCESS);
+    EXPECT_EQ(charSubBuffer1.pushBack('b'), ErrorCode::SUCCESS);
+    EXPECT_EQ(charSubBuffer1.pushBack('c'), ErrorCode::SUCCESS);
+
+    EXPECT_EQ(charSubBuffer2.pushBack('d'), ErrorCode::SUCCESS);
+    EXPECT_EQ(charSubBuffer2.pushBack('e'), ErrorCode::SUCCESS);
+    EXPECT_EQ(charSubBuffer2.pushBack('f'), ErrorCode::SUCCESS);
+
+    EXPECT_EQ(charBuffer.pushBack(&charSubBuffer1), ErrorCode::SUCCESS);
+    EXPECT_EQ(charBuffer.pushBack(&charSubBuffer2), ErrorCode::SUCCESS);
+
+    CircularBuffer<char>* poppedCharSubBuffer;
+    EXPECT_EQ(charBuffer.popFront(poppedCharSubBuffer), ErrorCode::SUCCESS);
+    EXPECT_EQ(poppedCharSubBuffer, &charSubBuffer1);
+
+    char c;
+    EXPECT_EQ(poppedCharSubBuffer->popFront(c), ErrorCode::SUCCESS);
+    EXPECT_EQ(c, 'a');
+    EXPECT_EQ(poppedCharSubBuffer->popFront(c), ErrorCode::SUCCESS);
+    EXPECT_EQ(c, 'b');
+    EXPECT_EQ(poppedCharSubBuffer->popFront(c), ErrorCode::SUCCESS);
+    EXPECT_EQ(c, 'c');
+
+    EXPECT_EQ(charBuffer.popFront(poppedCharSubBuffer), ErrorCode::SUCCESS);
+    EXPECT_EQ(poppedCharSubBuffer, &charSubBuffer2);
+
+    EXPECT_EQ(poppedCharSubBuffer->popFront(c), ErrorCode::SUCCESS);
+    EXPECT_EQ(c, 'd');
+    EXPECT_EQ(poppedCharSubBuffer->popFront(c), ErrorCode::SUCCESS);
+    EXPECT_EQ(c, 'e');
+    EXPECT_EQ(poppedCharSubBuffer->popFront(c), ErrorCode::SUCCESS);
+    EXPECT_EQ(c, 'f');
+}