diff --git a/build/test/cache/defines_dependency.yml b/build/test/cache/defines_dependency.yml
new file mode 100644
index 0000000..0dae92e
--- /dev/null
+++ b/build/test/cache/defines_dependency.yml
@@ -0,0 +1,3 @@
+---
+src/funktion.c:
+- TEST
diff --git a/build/test/cache/input.yml b/build/test/cache/input.yml
new file mode 100644
index 0000000..1adfc9b
--- /dev/null
+++ b/build/test/cache/input.yml
@@ -0,0 +1,243 @@
+---
+:project:
+  :use_exceptions: false
+  :use_mocks: true
+  :compile_threads: 1
+  :test_threads: 1
+  :use_test_preprocessor: true
+  :use_preprocessor_directives: false
+  :use_deep_dependencies: false
+  :generate_deep_dependencies: true
+  :auto_link_deep_dependencies: false
+  :test_file_prefix: test_
+  :options_paths: []
+  :release_build: false
+  :use_auxiliary_dependencies: true
+  :build_root: build
+  :which_ceedling: gem
+  :ceedling_version: 0.31.1
+  :default_tasks:
+  - test:all
+:release_build:
+  :use_assembly: false
+  :artifacts: []
+:paths:
+  :test:
+  - "+:test/**"
+  - "-:test/support"
+  :source:
+  - src/**
+  :support:
+  - test/support
+  :include: []
+  :libraries: []
+  :test_toolchain_include: []
+  :release_toolchain_include: []
+:files:
+  :test: []
+  :source: []
+  :assembly: []
+  :support: []
+  :include: []
+:environment:
+- :rake_columns: '120'
+:defines:
+  :test:
+  - &1 []
+  - TEST
+  :test_preprocess:
+  - *1
+  - TEST
+  :release: []
+  :release_preprocess: []
+  :use_test_definition: false
+  :common: []
+:libraries:
+  :flag: "-l${1}"
+  :path_flag: "-L ${1}"
+  :test: []
+  :test_preprocess: []
+  :release: []
+  :release_preprocess: []
+  :placement: :end
+  :system:
+  - m
+:flags: {}
+:extension:
+  :header: ".h"
+  :source: ".c"
+  :assembly: ".s"
+  :object: ".o"
+  :libraries:
+  - ".a"
+  - ".so"
+  :executable: ".out"
+  :map: ".map"
+  :list: ".lst"
+  :testpass: ".pass"
+  :testfail: ".fail"
+  :dependencies: ".d"
+:unity:
+  :vendor_path: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor
+  :defines: []
+:cmock:
+  :vendor_path: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor
+  :defines: []
+  :includes: []
+  :mock_prefix: mock_
+  :when_no_prototypes: :warn
+  :enforce_strict_ordering: true
+  :plugins:
+  - :ignore
+  - :callback
+  :treat_as:
+    uint8: HEX8
+    uint16: HEX16
+    uint32: UINT32
+    int8: INT8
+    bool: UINT8
+  :mock_path: build/test/mocks
+  :verbosity: 3
+  :unity_helper: false
+:cexception:
+  :vendor_path: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor
+  :defines: []
+:test_runner:
+  :includes: []
+  :file_suffix: _runner
+:tools:
+  :test_compiler:
+    :executable: gcc.exe
+    :name: default_test_compiler
+    :stderr_redirect: :none
+    :background_exec: :none
+    :optional: false
+    :arguments:
+    - ''
+    - ''
+    - -I"$": COLLECTION_PATHS_TEST_SUPPORT_SOURCE_INCLUDE_VENDOR
+    - -I"$": COLLECTION_PATHS_TEST_TOOLCHAIN_INCLUDE
+    - "-D$": COLLECTION_DEFINES_TEST_AND_VENDOR
+    - "-DGNU_COMPILER"
+    - "-g"
+    - ''
+    - -c "${1}"
+    - -o "${2}"
+    - "-MMD"
+    - -MF "${4}"
+  :test_fixture:
+    :executable: "${1}"
+    :name: default_test_fixture
+    :stderr_redirect: :auto
+    :background_exec: :none
+    :optional: false
+    :arguments: []
+  :test_linker:
+    :executable: gcc.exe
+    :name: default_test_linker
+    :stderr_redirect: :none
+    :background_exec: :none
+    :optional: false
+    :arguments:
+    - ''
+    - ''
+    - ''
+    - '"${1}"'
+    - "${5}"
+    - -o "${2}"
+    - ''
+    - "${4}"
+    - ''
+  :test_file_preprocessor:
+    :executable: gcc.exe
+    :name: default_test_file_preprocessor
+    :stderr_redirect: :none
+    :background_exec: :none
+    :optional: false
+    :arguments:
+    - ''
+    - ''
+    - "-E"
+    - -I"$": COLLECTION_PATHS_TEST_SUPPORT_SOURCE_INCLUDE_VENDOR
+    - -I"$": COLLECTION_PATHS_TEST_TOOLCHAIN_INCLUDE
+    - "-D$": COLLECTION_DEFINES_TEST_AND_VENDOR
+    - "-D$": DEFINES_TEST_PREPROCESS
+    - "-DGNU_COMPILER"
+    - '"${1}"'
+    - -o "${2}"
+  :test_file_preprocessor_directives:
+    :executable: gcc.exe
+    :name: default_test_file_preprocessor_directives
+    :stderr_redirect: :none
+    :background_exec: :none
+    :optional: false
+    :arguments:
+    - "-E"
+    - -I"$": COLLECTION_PATHS_TEST_SUPPORT_SOURCE_INCLUDE_VENDOR
+    - -I"$": COLLECTION_PATHS_TEST_TOOLCHAIN_INCLUDE
+    - "-D$": COLLECTION_DEFINES_TEST_AND_VENDOR
+    - "-D$": DEFINES_TEST_PREPROCESS
+    - "-DGNU_COMPILER"
+    - "-fdirectives-only"
+    - '"${1}"'
+    - -o "${2}"
+  :test_includes_preprocessor:
+    :executable: gcc.exe
+    :name: default_test_includes_preprocessor
+    :stderr_redirect: :none
+    :background_exec: :none
+    :optional: false
+    :arguments:
+    - ''
+    - ''
+    - "-E"
+    - "-MM"
+    - "-MG"
+    - -I"$": COLLECTION_PATHS_TEST_SUPPORT_SOURCE_INCLUDE_VENDOR
+    - -I"$": COLLECTION_PATHS_TEST_TOOLCHAIN_INCLUDE
+    - "-D$": COLLECTION_DEFINES_TEST_AND_VENDOR
+    - "-D$": DEFINES_TEST_PREPROCESS
+    - "-DGNU_COMPILER"
+    - '"${1}"'
+:test_compiler:
+  :arguments: []
+:test_linker:
+  :arguments: []
+:test_fixture:
+  :arguments: []
+  :link_objects: []
+:test_includes_preprocessor:
+  :arguments: []
+:test_file_preprocessor:
+  :arguments: []
+:test_file_preprocessor_directives:
+  :arguments: []
+:test_dependencies_generator:
+  :arguments: []
+:release_compiler:
+  :arguments: []
+:release_linker:
+  :arguments: []
+:release_assembler:
+  :arguments: []
+:release_dependencies_generator:
+  :arguments: []
+:plugins:
+  :load_paths:
+  - C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/lib/../plugins
+  :enabled:
+  - stdout_pretty_tests_report
+  - module_generator
+  :display_raw_test_results: false
+  :stdout_pretty_tests_report_path: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/lib/../plugins/stdout_pretty_tests_report
+  :module_generator_path: C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/lib/../plugins/module_generator
+:gcov:
+  :reports:
+  - HtmlDetailed
+  :gcovr:
+    :html_medium_threshold: 75
+    :html_high_threshold: 90
+:module_generator:
+  :project_root: "./"
+  :source_root: src/
+  :test_root: test/
diff --git a/build/test/cache/test_marktanteil.c b/build/test/cache/test_marktanteil.c
new file mode 100644
index 0000000..c0ba871
--- /dev/null
+++ b/build/test/cache/test_marktanteil.c
@@ -0,0 +1,43 @@
+#include "src/funktion.h"
+#include "C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+void setUp(void)
+
+{
+
+}
+
+
+
+void tearDown(void)
+
+{
+
+}
+
+
+
+void test_marktanteil_NeedToImplement(void)
+
+{
+
+    double a =23;
+
+    double b = 5;
+
+    double result = marktanteil(a,b);
+
+    double ergebnis = 21.739130;
+
+    printf("Testergebniss %f", ergebnis);
+
+    UnityAssertFloatsWithin((UNITY_FLOAT)((UNITY_FLOAT)((result)) * (UNITY_FLOAT)(0.00001f)), (UNITY_FLOAT)((UNITY_FLOAT)((result))), (UNITY_FLOAT)((UNITY_FLOAT)((ergebnis))), ((
+
+   ((void *)0)
+
+   )), (UNITY_UINT)((UNITY_UINT)(20)));
+
+}
diff --git a/build/test/dependencies/cmock.d b/build/test/dependencies/cmock.d
new file mode 100644
index 0000000..2b0b32a
--- /dev/null
+++ b/build/test/dependencies/cmock.d
@@ -0,0 +1,6 @@
+build/test/out/c/cmock.o: \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock.c \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/cmock/src/cmock_internals.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/funktion.d b/build/test/dependencies/funktion.d
new file mode 100644
index 0000000..a7d4ada
--- /dev/null
+++ b/build/test/dependencies/funktion.d
@@ -0,0 +1 @@
+build/test/out/c/funktion.o: src/funktion.c src/funktion.h
diff --git a/build/test/dependencies/test_marktanteil.d b/build/test/dependencies/test_marktanteil.d
new file mode 100644
index 0000000..79c8eb2
--- /dev/null
+++ b/build/test/dependencies/test_marktanteil.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_marktanteil.o: test/test_marktanteil.c \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h \
+ src/funktion.h
diff --git a/build/test/dependencies/test_marktanteil_runner.d b/build/test/dependencies/test_marktanteil_runner.d
new file mode 100644
index 0000000..1edbc70
--- /dev/null
+++ b/build/test/dependencies/test_marktanteil_runner.d
@@ -0,0 +1,4 @@
+build/test/out/c/test_marktanteil_runner.o: \
+ build/test/runners/test_marktanteil_runner.c \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/dependencies/unity.d b/build/test/dependencies/unity.d
new file mode 100644
index 0000000..614a6fe
--- /dev/null
+++ b/build/test/dependencies/unity.d
@@ -0,0 +1,4 @@
+build/test/out/c/unity.o: \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.c \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h \
+ C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity_internals.h
diff --git a/build/test/out/c/cmock.o b/build/test/out/c/cmock.o
new file mode 100644
index 0000000..657d425
Binary files /dev/null and b/build/test/out/c/cmock.o differ
diff --git a/build/test/out/c/funktion.o b/build/test/out/c/funktion.o
new file mode 100644
index 0000000..b81e1fa
Binary files /dev/null and b/build/test/out/c/funktion.o differ
diff --git a/build/test/out/c/test_marktanteil.o b/build/test/out/c/test_marktanteil.o
new file mode 100644
index 0000000..48088e1
Binary files /dev/null and b/build/test/out/c/test_marktanteil.o differ
diff --git a/build/test/out/c/test_marktanteil_runner.o b/build/test/out/c/test_marktanteil_runner.o
new file mode 100644
index 0000000..1432ea1
Binary files /dev/null and b/build/test/out/c/test_marktanteil_runner.o differ
diff --git a/build/test/out/c/unity.o b/build/test/out/c/unity.o
new file mode 100644
index 0000000..201decd
Binary files /dev/null and b/build/test/out/c/unity.o differ
diff --git a/build/test/out/test_marktanteil.out b/build/test/out/test_marktanteil.out
new file mode 100644
index 0000000..5b8f2e5
Binary files /dev/null and b/build/test/out/test_marktanteil.out differ
diff --git a/build/test/preprocess/files/test_marktanteil.c b/build/test/preprocess/files/test_marktanteil.c
new file mode 100644
index 0000000..c0ba871
--- /dev/null
+++ b/build/test/preprocess/files/test_marktanteil.c
@@ -0,0 +1,43 @@
+#include "src/funktion.h"
+#include "C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h"
+
+
+
+
+void setUp(void)
+
+{
+
+}
+
+
+
+void tearDown(void)
+
+{
+
+}
+
+
+
+void test_marktanteil_NeedToImplement(void)
+
+{
+
+    double a =23;
+
+    double b = 5;
+
+    double result = marktanteil(a,b);
+
+    double ergebnis = 21.739130;
+
+    printf("Testergebniss %f", ergebnis);
+
+    UnityAssertFloatsWithin((UNITY_FLOAT)((UNITY_FLOAT)((result)) * (UNITY_FLOAT)(0.00001f)), (UNITY_FLOAT)((UNITY_FLOAT)((result))), (UNITY_FLOAT)((UNITY_FLOAT)((ergebnis))), ((
+
+   ((void *)0)
+
+   )), (UNITY_UINT)((UNITY_UINT)(20)));
+
+}
diff --git a/build/test/preprocess/includes/test_marktanteil.c b/build/test/preprocess/includes/test_marktanteil.c
new file mode 100644
index 0000000..376e2c1
--- /dev/null
+++ b/build/test/preprocess/includes/test_marktanteil.c
@@ -0,0 +1,3 @@
+---
+- C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/ceedling-0.31.1/vendor/unity/src/unity.h
+- src/funktion.h
diff --git a/build/test/results/test_marktanteil.pass b/build/test/results/test_marktanteil.pass
new file mode 100644
index 0000000..5924ba9
--- /dev/null
+++ b/build/test/results/test_marktanteil.pass
@@ -0,0 +1,20 @@
+---
+:source:
+  :path: test
+  :file: test_marktanteil.c
+:successes:
+- :test: test_marktanteil_NeedToImplement
+  :line: 13
+  :message: ''
+  :unity_test_time: 0
+:failures: []
+:ignores: []
+:counts:
+  :total: 1
+  :passed: 1
+  :failed: 0
+  :ignored: 0
+:stdout:
+- 'Der Marktanteil beträgt: 21.739130'
+- Testergebniss 21.739130
+:time: 0.4875119999924209
diff --git a/build/test/runners/test_marktanteil_runner.c b/build/test/runners/test_marktanteil_runner.c
new file mode 100644
index 0000000..edf6a57
--- /dev/null
+++ b/build/test/runners/test_marktanteil_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_marktanteil_NeedToImplement(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_marktanteil.c");
+  run_test(test_marktanteil_NeedToImplement, "test_marktanteil_NeedToImplement", 13);
+
+  return UnityEnd();
+}
diff --git a/test/test_marktanteil.c b/test/test_marktanteil.c
new file mode 100644
index 0000000..feec41c
--- /dev/null
+++ b/test/test_marktanteil.c
@@ -0,0 +1,22 @@
+#include "unity.h"
+#include "funktion.h"
+
+
+void setUp(void)
+{
+}
+
+void tearDown(void)
+{
+}
+
+void test_marktanteil_NeedToImplement(void)
+{
+    double a =23;
+    double b = 5;
+    double result = marktanteil(a,b);
+    double ergebnis =  21.739130;
+    printf("Testergebniss %f", ergebnis);
+    TEST_ASSERT_EQUAL_FLOAT(result, ergebnis);
+}
+