added test_bintree

makefile

@@ -44,6 +44,12 @@ unitTests: stack.o test_stack.c $(unityfolder)/unity.c
 numbersTests: numbers.o test_numbers.c $(unityfolder)/unity.c
 	$(CC) $(FLAGS) -I$(unityfolder) -o runNumbersTest test_numbers.c numbers.o $(unityfolder)/unity.c
 
+# --------------------------
+# bintree.c Tests
+# --------------------------
+bintreeTests: bintree.o test_bintree.c $(unityfolder)/unity.c
+	$(CC) $(FLAGS) -I$(unityfolder) -o runBintreeTest test_bintree.c bintree.o $(unityfolder)/unity.c
+
 # --------------------------
 # Clean
 # --------------------------

test_bintree.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "bintree.h"
+#include "unity.h"
+
+
+void sizeTest()
+{
+    TreeNode root;
+    TreeNode node1;
+    TreeNode node2;
+
+    int dataRoot = 2;
+    int dataNode1 = 1;
+    int dataNode2 = 3;
+
+
+    root.data = &dataRoot;
+    root.left = &node1;
+    root.right = &node2;
+
+    node1.data = &dataNode1;
+    node1.left = NULL;
+    node1.right = NULL;
+
+    node2.data = &dataNode2;
+    node2.left = NULL;
+    node2.right = NULL;
+
+
+
+    TEST_ASSERT_EQUAL_INT(3,treeSize(&root));
+
+    
+}
+
+void setUp(void)
+{
+    // Falls notwendig, kann hier Vorbereitungsarbeit gemacht werden
+}
+
+void tearDown(void)
+{
+    // Hier kann Bereinigungsarbeit nach jedem Test durchgeführt werden
+}
+
+int main()
+{
+    UNITY_BEGIN();
+
+    printf("============================\nNumbers tests\n============================\n");
+
+    RUN_TEST(sizeTest);
+
+    return UNITY_END();
+}