diff --git a/.gitignore b/.gitignore
index 32bf260..76e18ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@ cmake-build-debug
 cmake-build-release
 build
 Testing/Temporary
+_codeql_build_dir
 
diff --git a/_codeql_detected_source_root b/_codeql_detected_source_root
new file mode 120000
index 0000000..945c9b4
--- /dev/null
+++ b/_codeql_detected_source_root
@@ -0,0 +1 @@
+.
\ No newline at end of file
diff --git a/test_main.cpp b/test_main.cpp
index 0954af4..2c784eb 100644
--- a/test_main.cpp
+++ b/test_main.cpp
@@ -119,7 +119,26 @@ TEST(RingBufferTest, IteratorsFromDifferentBuffersAreNotEqual) {
     ring_buffer<int, 3> b1;
     ring_buffer<int, 3> b2;
 
+    // Iterators from different buffers should not be equal
     EXPECT_NE(b1.cbegin(), b2.cbegin());
+    
+    // Add elements to both buffers
+    b1.push_back(1);
+    b1.push_back(2);
+    b2.push_back(1);
+    b2.push_back(2);
+    
+    // Iterators at the same logical position from different buffers should still be unequal
+    EXPECT_NE(b1.cbegin(), b2.cbegin());
+    EXPECT_NE(b1.cend(), b2.cend());
+    
+    // Iterators from the same buffer at the same position should be equal
+    EXPECT_EQ(b1.cbegin(), b1.cbegin());
+    EXPECT_EQ(b1.cend(), b1.cend());
+    
+    // begin() and end() from the same buffer should be different when not empty
+    EXPECT_NE(b1.cbegin(), b1.cend());
+    EXPECT_NE(b2.cbegin(), b2.cend());
 }
 
 TEST(RingBufferTest, NoOverwriteWhenFull) {