From 52b2fd214c8484a55c409c72c90929428e261949 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 1 May 2026 11:35:10 +0200
Subject: kstd: vector add resize tests

---
 libs/kstd/tests/src/vector.cpp | 68 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

(limited to 'libs')

diff --git a/libs/kstd/tests/src/vector.cpp b/libs/kstd/tests/src/vector.cpp
index bbbd3d1..edf47d7 100644
--- a/libs/kstd/tests/src/vector.cpp
+++ b/libs/kstd/tests/src/vector.cpp
@@ -531,6 +531,34 @@ SCENARIO("Vector modifiers", "[vector]")
         REQUIRE(v[2] == 2);
       }
     }
+
+    WHEN("resizing the vector to a greater size")
+    {
+      v.resize(3);
+
+      THEN("the size and capacity increase and the elements are value initialized")
+      {
+        REQUIRE(v.size() == 3);
+        REQUIRE(v.capacity() >= 3);
+        REQUIRE(v[0] == 0);
+        REQUIRE(v[1] == 0);
+        REQUIRE(v[2] == 0);
+      }
+    }
+
+    WHEN("resizing the vector to a greater size with initial value")
+    {
+      v.resize(3, 2);
+
+      THEN("the size and capacity increase and the elements are initialized to the given value")
+      {
+        REQUIRE(v.size() == 3);
+        REQUIRE(v.capacity() >= 3);
+        REQUIRE(v[0] == 2);
+        REQUIRE(v[1] == 2);
+        REQUIRE(v[2] == 2);
+      }
+    }
   }
 
   GIVEN("A populated vector")
@@ -863,6 +891,46 @@ SCENARIO("Vector modifiers", "[vector]")
       }
     }
 
+    WHEN("resizing the vector to a greater size")
+    {
+      auto initial_size = v.size();
+      v.resize(initial_size + 3);
+
+      THEN("the size and capacity increase and the elements are value initialized")
+      {
+        REQUIRE(v.size() == initial_size + 3);
+        REQUIRE(v.capacity() >= initial_size + 3);
+        REQUIRE(v[initial_size + 0] == 0);
+        REQUIRE(v[initial_size + 1] == 0);
+        REQUIRE(v[initial_size + 2] == 0);
+      }
+    }
+
+    WHEN("resizing the vector to a greater size with initial value")
+    {
+      auto initial_size = v.size();
+      v.resize(initial_size + 3, 2);
+
+      THEN("the size and capacity increase and the elements are initialized to the given value")
+      {
+        REQUIRE(v.size() == initial_size + 3);
+        REQUIRE(v.capacity() >= initial_size + 3);
+        REQUIRE(v[initial_size + 0] == 2);
+        REQUIRE(v[initial_size + 1] == 2);
+        REQUIRE(v[initial_size + 2] == 2);
+      }
+    }
+
+    WHEN("resizing the vector to a smaller size")
+    {
+      v.resize(1);
+
+      THEN("the size decreases and the elements are destroyed")
+      {
+        REQUIRE(v.size() == 1);
+        REQUIRE(v[0] == 10);
+      }
+    }
   }
 }
 
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