diff --git a/build/test/cache/defines_dependency.yml b/build/test/cache/defines_dependency.yml
index 276aae5..a81d8fc 100644
--- a/build/test/cache/defines_dependency.yml
+++ b/build/test/cache/defines_dependency.yml
@@ -5,3 +5,5 @@ src/minirechner.c:
 - TEST
 src/zahlenraten.c:
 - TEST
+src/SchereSteinPapier.c:
+- TEST
diff --git a/build/test/cache/test_SchereSteinPapier.c b/build/test/cache/test_SchereSteinPapier.c
new file mode 100644
index 0000000..a1c62af
--- /dev/null
+++ b/build/test/cache/test_SchereSteinPapier.c
@@ -0,0 +1,43 @@
+#include "src/SchereSteinPapier.h"
+#include "C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+
+
+
+
+void setUp(void)
+
+{
+
+}
+
+
+
+void tearDown(void)
+
+{
+
+}
+
+
+
+void test_Scheresteinpapier_generateRandom(void) {
+
+
+
+    srand(42);
+
+
+
+    for (int i = 0; i < 100; ++i) {
+
+        int result = generateRandom();
+
+        do {if ((result >= 0 && result <= 2)) {} else {UnityFail( ((" Expected TRUE Was FALSE")), (UNITY_UINT)((UNITY_UINT)(21)));}} while(0);
+
+    }
+
+}
diff --git a/build/test/dependencies/SchereSteinPapier.d b/build/test/dependencies/SchereSteinPapier.d
new file mode 100644
index 0000000..83e9bd7
--- /dev/null
+++ b/build/test/dependencies/SchereSteinPapier.d
@@ -0,0 +1,2 @@
+build/test/out/c/SchereSteinPapier.o: src/SchereSteinPapier.c \
+ src/SchereSteinPapier.h
diff --git a/build/test/dependencies/test_SchereSteinPapier.d b/build/test/dependencies/test_SchereSteinPapier.d
new file mode 100644
index 0000000..f88fdf7
--- /dev/null
+++ b/build/test/dependencies/test_SchereSteinPapier.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_SchereSteinPapier.o: test/test_SchereSteinPapier.c \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h \
+ src/SchereSteinPapier.h
diff --git a/build/test/dependencies/test_SchereSteinPapier_runner.d b/build/test/dependencies/test_SchereSteinPapier_runner.d
new file mode 100644
index 0000000..623b8b2
--- /dev/null
+++ b/build/test/dependencies/test_SchereSteinPapier_runner.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_SchereSteinPapier_runner.o: \
+ build/test/runners/test_SchereSteinPapier_runner.c \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/out/c/SchereSteinPapier.o b/build/test/out/c/SchereSteinPapier.o
new file mode 100644
index 0000000..dc33abe
Binary files /dev/null and b/build/test/out/c/SchereSteinPapier.o differ
diff --git a/build/test/out/c/test_SchereSteinPapier.o b/build/test/out/c/test_SchereSteinPapier.o
new file mode 100644
index 0000000..5b69bb8
Binary files /dev/null and b/build/test/out/c/test_SchereSteinPapier.o differ
diff --git a/build/test/out/c/test_SchereSteinPapier_runner.o b/build/test/out/c/test_SchereSteinPapier_runner.o
new file mode 100644
index 0000000..a3c117c
Binary files /dev/null and b/build/test/out/c/test_SchereSteinPapier_runner.o differ
diff --git a/build/test/out/test_SchereSteinPapier.out b/build/test/out/test_SchereSteinPapier.out
new file mode 100644
index 0000000..c3e9f54
Binary files /dev/null and b/build/test/out/test_SchereSteinPapier.out differ
diff --git a/build/test/out/test_ageinseconds.out b/build/test/out/test_ageinseconds.out
index c56e3fe..56606b6 100644
Binary files a/build/test/out/test_ageinseconds.out and b/build/test/out/test_ageinseconds.out differ
diff --git a/build/test/out/test_minirechner.out b/build/test/out/test_minirechner.out
index 09ee708..e3a27d6 100644
Binary files a/build/test/out/test_minirechner.out and b/build/test/out/test_minirechner.out differ
diff --git a/build/test/out/test_zahlenraten.out b/build/test/out/test_zahlenraten.out
index 557c303..0417dd4 100644
Binary files a/build/test/out/test_zahlenraten.out and b/build/test/out/test_zahlenraten.out differ
diff --git a/build/test/preprocess/files/test_SchereSteinPapier.c b/build/test/preprocess/files/test_SchereSteinPapier.c
new file mode 100644
index 0000000..a1c62af
--- /dev/null
+++ b/build/test/preprocess/files/test_SchereSteinPapier.c
@@ -0,0 +1,43 @@
+#include "src/SchereSteinPapier.h"
+#include "C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+
+
+
+
+void setUp(void)
+
+{
+
+}
+
+
+
+void tearDown(void)
+
+{
+
+}
+
+
+
+void test_Scheresteinpapier_generateRandom(void) {
+
+
+
+    srand(42);
+
+
+
+    for (int i = 0; i < 100; ++i) {
+
+        int result = generateRandom();
+
+        do {if ((result >= 0 && result <= 2)) {} else {UnityFail( ((" Expected TRUE Was FALSE")), (UNITY_UINT)((UNITY_UINT)(21)));}} while(0);
+
+    }
+
+}
diff --git a/build/test/preprocess/includes/test_SchereSteinPapier.c b/build/test/preprocess/includes/test_SchereSteinPapier.c
new file mode 100644
index 0000000..1bb5f0e
--- /dev/null
+++ b/build/test/preprocess/includes/test_SchereSteinPapier.c
@@ -0,0 +1,3 @@
+---
+- C:/Ruby30-x64/lib/ruby/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h
+- src/SchereSteinPapier.h
diff --git a/build/test/results/test_SchereSteinPapier.pass b/build/test/results/test_SchereSteinPapier.pass
new file mode 100644
index 0000000..df998a3
--- /dev/null
+++ b/build/test/results/test_SchereSteinPapier.pass
@@ -0,0 +1,18 @@
+---
+:source:
+  :path: test
+  :file: test_SchereSteinPapier.c
+:successes:
+- :test: test_Scheresteinpapier_generateRandom
+  :line: 15
+  :message: ''
+  :unity_test_time: 0
+:failures: []
+:ignores: []
+:counts:
+  :total: 1
+  :passed: 1
+  :failed: 0
+  :ignored: 0
+:stdout: []
+:time: 0.03652950000105193
diff --git a/build/test/results/test_ageinseconds.pass b/build/test/results/test_ageinseconds.pass
index fffdc3a..a921d54 100644
--- a/build/test/results/test_ageinseconds.pass
+++ b/build/test/results/test_ageinseconds.pass
@@ -23,4 +23,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.8361497999994754
+:time: 0.03658220000033907
diff --git a/build/test/results/test_minirechner.pass b/build/test/results/test_minirechner.pass
index 7e7a215..89514e2 100644
--- a/build/test/results/test_minirechner.pass
+++ b/build/test/results/test_minirechner.pass
@@ -83,4 +83,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.33068490000005113
+:time: 0.03659530000004452
diff --git a/build/test/results/test_zahlenraten.pass b/build/test/results/test_zahlenraten.pass
index 15fdbb1..a5a6eda 100644
--- a/build/test/results/test_zahlenraten.pass
+++ b/build/test/results/test_zahlenraten.pass
@@ -15,4 +15,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.31757349999952567
+:time: 0.03663650000089547
diff --git a/build/test/runners/test_SchereSteinPapier_runner.c b/build/test/runners/test_SchereSteinPapier_runner.c
new file mode 100644
index 0000000..6583e72
--- /dev/null
+++ b/build/test/runners/test_SchereSteinPapier_runner.c
@@ -0,0 +1,81 @@
+/* AUTOGENERATED FILE. DO NOT EDIT. */
+
+/*=======Automagically Detected Files To Include=====*/
+#include "unity.h"
+
+int GlobalExpectCount;
+int GlobalVerifyOrder;
+char* GlobalOrderError;
+
+/*=======External Functions This Runner Calls=====*/
+extern void setUp(void);
+extern void tearDown(void);
+extern void test_Scheresteinpapier_generateRandom(void);
+
+
+/*=======Mock Management=====*/
+static void CMock_Init(void)
+{
+  GlobalExpectCount = 0;
+  GlobalVerifyOrder = 0;
+  GlobalOrderError = NULL;
+}
+static void CMock_Verify(void)
+{
+}
+static void CMock_Destroy(void)
+{
+}
+
+/*=======Test Reset Options=====*/
+void resetTest(void);
+void resetTest(void)
+{
+  tearDown();
+  CMock_Verify();
+  CMock_Destroy();
+  CMock_Init();
+  setUp();
+}
+void verifyTest(void);
+void verifyTest(void)
+{
+  CMock_Verify();
+}
+
+/*=======Test Runner Used To Run Each Test=====*/
+static void run_test(UnityTestFunction func, const char* name, UNITY_LINE_TYPE line_num)
+{
+    Unity.CurrentTestName = name;
+    Unity.CurrentTestLineNumber = line_num;
+#ifdef UNITY_USE_COMMAND_LINE_ARGS
+    if (!UnityTestMatches())
+        return;
+#endif
+    Unity.NumberOfTests++;
+    UNITY_CLR_DETAILS();
+    UNITY_EXEC_TIME_START();
+    CMock_Init();
+    if (TEST_PROTECT())
+    {
+        setUp();
+        func();
+    }
+    if (TEST_PROTECT())
+    {
+        tearDown();
+        CMock_Verify();
+    }
+    CMock_Destroy();
+    UNITY_EXEC_TIME_STOP();
+    UnityConcludeTest();
+}
+
+/*=======MAIN=====*/
+int main(void)
+{
+  UnityBegin("test_SchereSteinPapier.c");
+  run_test(test_Scheresteinpapier_generateRandom, "test_Scheresteinpapier_generateRandom", 15);
+
+  return UnityEnd();
+}
diff --git a/src/SchereSteinPapier.h b/src/SchereSteinPapier.h
index ca588ce..4d4c26e 100644
--- a/src/SchereSteinPapier.h
+++ b/src/SchereSteinPapier.h
@@ -2,5 +2,6 @@
 #define SCHERESTEINPAPIER_H
 
 int generateRandom();
+int determineWinner(int spielerWahl, int computerWahl);
 
 #endif // SCHERESTEINPAPIER_H
diff --git a/test/test_SchereSteinPapier.c b/test/test_SchereSteinPapier.c
index 4273d92..aa5b429 100644
--- a/test/test_SchereSteinPapier.c
+++ b/test/test_SchereSteinPapier.c
@@ -22,4 +22,26 @@ void test_Scheresteinpapier_generateRandom(void) {
     }
 }
 
+void test_Scheresteinpapier_determineWinner(void) {
+    
+    for (int spieler = 0; spieler <= 2; ++spieler) {
+        for (int computer = 0; computer <= 2; ++computer) {
+            int result = determineWinner(spieler, computer);
+
+            
+            if ((spieler == 0 && computer == 2) ||
+                (spieler == 1 && computer == 0) ||
+                (spieler == 2 && computer == 1)) {
+                TEST_ASSERT_EQUAL(1, result); // Spieler gewinnt
+            }
+            else if (spieler == computer) {
+                TEST_ASSERT_EQUAL(0, result); // Unentschieden
+            }
+            else {
+                TEST_ASSERT_EQUAL(-1, result); // Computer gewinnt
+            }
+        }
+    }
+}
+
 #endif // TEST