diff --git a/build/test/cache/test_factorial.c b/build/test/cache/test_factorial.c
new file mode 100644
index 0000000..debbcbf
--- /dev/null
+++ b/build/test/cache/test_factorial.c
@@ -0,0 +1,47 @@
+#include "src/main/c/Calculator/calculator.h"
+#include "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+
+
+void setUp(void){
+
+
+
+}
+
+void tearDown(void){
+
+}
+
+
+
+
+
+void test_factorial_4(void){
+
+
+
+    double result;
+
+    double a = 4;
+
+
+
+
+
+    result = factorial(a);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((24)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(22), UNITY_DISPLAY_STYLE_INT);
+
+}
diff --git a/build/test/cache/test_pow.c b/build/test/cache/test_pow.c
new file mode 100644
index 0000000..fe4db9b
--- /dev/null
+++ b/build/test/cache/test_pow.c
@@ -0,0 +1,79 @@
+#include "build/temp/../../src/main/c/Calculator/calculator.h"
+#include "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+
+
+void setUp(void){
+
+
+
+}
+
+void tearDown(void){
+
+}
+
+
+
+
+
+void test_pow_N_N(void){
+
+
+
+    double result;
+
+    double b = 3;
+
+    double a = 3;
+
+
+
+
+
+    result = pow(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((27)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(23), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_pow_Z_N(void){
+
+
+
+    double result;
+
+    double b = 3;
+
+    double a = -3;
+
+
+
+
+
+    result = pow(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((-27)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(36), UNITY_DISPLAY_STYLE_INT);
+
+}
diff --git a/build/test/dependencies/test_factorial.d b/build/test/dependencies/test_factorial.d
new file mode 100644
index 0000000..11420b1
--- /dev/null
+++ b/build/test/dependencies/test_factorial.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_factorial.o: test/Calculator/test_factorial.c \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h \
+ src/main/c/Calculator/calculator.h
diff --git a/build/test/dependencies/test_factorial_runner.d b/build/test/dependencies/test_factorial_runner.d
new file mode 100644
index 0000000..961d380
--- /dev/null
+++ b/build/test/dependencies/test_factorial_runner.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_factorial_runner.o: \
+ build/test/runners/test_factorial_runner.c \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/test_pow.d b/build/test/dependencies/test_pow.d
new file mode 100644
index 0000000..d76ecae
--- /dev/null
+++ b/build/test/dependencies/test_pow.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_pow.o: test/Calculator/test_pow.c \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h \
+ test/Calculator/../../src/main/c/Calculator/calculator.h
diff --git a/build/test/dependencies/test_pow_runner.d b/build/test/dependencies/test_pow_runner.d
new file mode 100644
index 0000000..d2634ed
--- /dev/null
+++ b/build/test/dependencies/test_pow_runner.d
@@ -0,0 +1,3 @@
+build/test/out/c/test_pow_runner.o: build/test/runners/test_pow_runner.c \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ /var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/out/c/test_factorial.o b/build/test/out/c/test_factorial.o
new file mode 100644
index 0000000..ebb50e0
Binary files /dev/null and b/build/test/out/c/test_factorial.o differ
diff --git a/build/test/out/c/test_factorial_runner.o b/build/test/out/c/test_factorial_runner.o
new file mode 100644
index 0000000..121ea18
Binary files /dev/null and b/build/test/out/c/test_factorial_runner.o differ
diff --git a/build/test/out/c/test_pow.o b/build/test/out/c/test_pow.o
new file mode 100644
index 0000000..1a52535
Binary files /dev/null and b/build/test/out/c/test_pow.o differ
diff --git a/build/test/out/c/test_pow_runner.o b/build/test/out/c/test_pow_runner.o
new file mode 100644
index 0000000..7fec983
Binary files /dev/null and b/build/test/out/c/test_pow_runner.o differ
diff --git a/build/test/out/test_factorial.out b/build/test/out/test_factorial.out
new file mode 100755
index 0000000..b7a6cec
Binary files /dev/null and b/build/test/out/test_factorial.out differ
diff --git a/build/test/out/test_pow.out b/build/test/out/test_pow.out
new file mode 100755
index 0000000..1572d74
Binary files /dev/null and b/build/test/out/test_pow.out differ
diff --git a/build/test/preprocess/files/test_factorial.c b/build/test/preprocess/files/test_factorial.c
new file mode 100644
index 0000000..debbcbf
--- /dev/null
+++ b/build/test/preprocess/files/test_factorial.c
@@ -0,0 +1,47 @@
+#include "src/main/c/Calculator/calculator.h"
+#include "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+
+
+void setUp(void){
+
+
+
+}
+
+void tearDown(void){
+
+}
+
+
+
+
+
+void test_factorial_4(void){
+
+
+
+    double result;
+
+    double a = 4;
+
+
+
+
+
+    result = factorial(a);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((24)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(22), UNITY_DISPLAY_STYLE_INT);
+
+}
diff --git a/build/test/preprocess/files/test_pow.c b/build/test/preprocess/files/test_pow.c
new file mode 100644
index 0000000..fe4db9b
--- /dev/null
+++ b/build/test/preprocess/files/test_pow.c
@@ -0,0 +1,79 @@
+#include "build/temp/../../src/main/c/Calculator/calculator.h"
+#include "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+
+
+void setUp(void){
+
+
+
+}
+
+void tearDown(void){
+
+}
+
+
+
+
+
+void test_pow_N_N(void){
+
+
+
+    double result;
+
+    double b = 3;
+
+    double a = 3;
+
+
+
+
+
+    result = pow(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((27)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(23), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_pow_Z_N(void){
+
+
+
+    double result;
+
+    double b = 3;
+
+    double a = -3;
+
+
+
+
+
+    result = pow(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((-27)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(36), UNITY_DISPLAY_STYLE_INT);
+
+}
diff --git a/build/test/preprocess/includes/test_factorial.c b/build/test/preprocess/includes/test_factorial.c
new file mode 100644
index 0000000..f2efae7
--- /dev/null
+++ b/build/test/preprocess/includes/test_factorial.c
@@ -0,0 +1,3 @@
+---
+- "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+- src/main/c/Calculator/calculator.h
diff --git a/build/test/preprocess/includes/test_pow.c b/build/test/preprocess/includes/test_pow.c
new file mode 100644
index 0000000..26256f2
--- /dev/null
+++ b/build/test/preprocess/includes/test_pow.c
@@ -0,0 +1,3 @@
+---
+- "/var/lib/gems/3.0.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+- build/temp/../../src/main/c/Calculator/calculator.h
diff --git a/build/test/results/test_factorial.pass b/build/test/results/test_factorial.pass
new file mode 100644
index 0000000..ede2338
--- /dev/null
+++ b/build/test/results/test_factorial.pass
@@ -0,0 +1,18 @@
+---
+:source:
+  :path: test/Calculator
+  :file: test_factorial.c
+:successes:
+- :test: test_factorial_4
+  :line: 13
+  :message: ''
+  :unity_test_time: 0
+:failures: []
+:ignores: []
+:counts:
+  :total: 1
+  :passed: 1
+  :failed: 0
+  :ignored: 0
+:stdout: []
+:time: 0.0060175769904162735
diff --git a/build/test/results/test_pow.pass b/build/test/results/test_pow.pass
new file mode 100644
index 0000000..d103a0d
--- /dev/null
+++ b/build/test/results/test_pow.pass
@@ -0,0 +1,22 @@
+---
+:source:
+  :path: test/Calculator
+  :file: test_pow.c
+:successes:
+- :test: test_pow_N_N
+  :line: 13
+  :message: ''
+  :unity_test_time: 0
+- :test: test_pow_Z_N
+  :line: 26
+  :message: ''
+  :unity_test_time: 0
+:failures: []
+:ignores: []
+:counts:
+  :total: 2
+  :passed: 2
+  :failed: 0
+  :ignored: 0
+:stdout: []
+:time: 0.0062921050121076405
diff --git a/build/test/results/test_template.pass b/build/test/results/test_template.pass
index 493caaa..28bc252 100644
--- a/build/test/results/test_template.pass
+++ b/build/test/results/test_template.pass
@@ -19,4 +19,4 @@
   :failed: 0
   :ignored: 0
 :stdout: []
-:time: 0.004427945998031646
+:time: 0.002953332004835829
diff --git a/build/test/runners/test_factorial_runner.c b/build/test/runners/test_factorial_runner.c
new file mode 100644
index 0000000..3e02547
--- /dev/null
+++ b/build/test/runners/test_factorial_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_factorial_4(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_factorial.c");
+  run_test(test_factorial_4, "test_factorial_4", 13);
+
+  return UnityEnd();
+}
diff --git a/build/test/runners/test_pow_runner.c b/build/test/runners/test_pow_runner.c
new file mode 100644
index 0000000..83a9119
--- /dev/null
+++ b/build/test/runners/test_pow_runner.c
@@ -0,0 +1,83 @@
+/* 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_pow_N_N(void);
+extern void test_pow_Z_N(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_pow.c");
+  run_test(test_pow_N_N, "test_pow_N_N", 13);
+  run_test(test_pow_Z_N, "test_pow_Z_N", 26);
+
+  return UnityEnd();
+}
diff --git a/test/Calculator/test_factorial.c b/test/Calculator/test_factorial.c
new file mode 100644
index 0000000..28814dc
--- /dev/null
+++ b/test/Calculator/test_factorial.c
@@ -0,0 +1,25 @@
+#ifdef TEST
+#include "unity.h"
+#include "calculator.h"
+
+
+void setUp(void){
+    //Wenn Funktion Vorraussetzungen braucht
+}
+void tearDown(void){
+}
+
+
+void test_factorial_4(void){
+    /* arrange */
+    double result;
+    double a = 4;
+
+    /* act */
+    result = factorial(a);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(24, result);//1 * 2 * 3 * 4 = 24
+}
+
+#endif
diff --git a/test/Calculator/test_add.c b/test/Calculator/test_pow.c
similarity index 100%
rename from test/Calculator/test_add.c
rename to test/Calculator/test_pow.c