kstd: ring_buffer: add write-through tests

1 files changed, 32 insertions, 0 deletions

diff --git a/libs/kstd/kstd/ring_buffer.tests.cpp b/libs/kstd/kstd/ring_buffer.tests.cpp
index 7f459734..2157b6c3 100644
--- a/libs/kstd/kstd/ring_buffer.tests.cpp
+++ b/libs/kstd/kstd/ring_buffer.tests.cpp
@@ -195,6 +195,22 @@ SCENARIO("Ring Buffer element access", "[kstd][ring_buffer]")
                              Catch::Matchers::Message("[KSTD] Index out-of-bounds in ring_buffer element access!"));
     }
 
+    WHEN("writing through the return value of at()")
+    {
+      buffer.at(1) = 'b';
+
+      THEN("the written element is changed")
+      {
+        REQUIRE(buffer.at(1) == 'b');
+      }
+
+      THEN("the other elements are unchanged")
+      {
+        REQUIRE(buffer.at(0) == 'a');
+        REQUIRE(buffer.at(2) == 'a');
+      }
+    }
+
     THEN("accessing the first 3 elements using operator[] returns 'a'")
     {
       REQUIRE(buffer[0] == 'a');
@@ -202,6 +218,22 @@ SCENARIO("Ring Buffer element access", "[kstd][ring_buffer]")
       REQUIRE(buffer[2] == 'a');
     }
 
+    WHEN("writing through the return value of operator[]")
+    {
+      buffer[1] = 'b';
+
+      THEN("the written element is changed")
+      {
+        REQUIRE(buffer.at(1) == 'b');
+      }
+
+      THEN("the other elements are unchanged")
+      {
+        REQUIRE(buffer.at(0) == 'a');
+        REQUIRE(buffer.at(2) == 'a');
+      }
+    }
+
     WHEN("working through a const reference")
     {
       auto const & ref = buffer;