diff --git a/imageInputTests.c b/imageInputTests.c
index 1863e96..b4a965c 100644
--- a/imageInputTests.c
+++ b/imageInputTests.c
@@ -5,37 +5,40 @@
 #include "unity.h"
 #include "imageInput.h"
 
-
 static void prepareImageFile(const char *path, unsigned short int width, unsigned short int height, unsigned int short numberOfImages, unsigned char label)
 {
     FILE *file = fopen(path, "wb");
 
-    if(file != NULL)
+    if (file != NULL)
     {
         const char *fileTag = "__info2_image_file_format__";
-        GrayScalePixelType *zeroBuffer = (GrayScalePixelType *)calloc(numberOfImages * width * height, sizeof(GrayScalePixelType));
+        GrayScalePixelType *buffer = (GrayScalePixelType *)calloc(numberOfImages * width * height, sizeof(GrayScalePixelType));
 
-        if(zeroBuffer != NULL)
+        if (buffer != NULL)
         {
-            fwrite(fileTag, sizeof(fileTag[0]), strlen(fileTag), file);
+            for (int i = 0; i < width * height; i++)
+            {    
+            buffer[i] = (GrayScalePixelType)i;                      // füllen des buffers mit Graustufen des Pixel für Test                              
+            }
+
+            fwrite(fileTag, 1, strlen(fileTag), file);
             fwrite(&numberOfImages, sizeof(numberOfImages), 1, file);
             fwrite(&width, sizeof(width), 1, file);
             fwrite(&height, sizeof(height), 1, file);
 
-            for(int i = 0; i < numberOfImages; i++)
+            for (int i = 0; i < numberOfImages; i++)
             {
-                fwrite(zeroBuffer, sizeof(GrayScalePixelType), width * height, file);
+                fwrite(buffer, sizeof(GrayScalePixelType), width * height, file);
                 fwrite(&label, sizeof(unsigned char), 1, file);
             }
 
-            free(zeroBuffer);
+            free(buffer);
         }
 
         fclose(file);
     }
 }
 
-
 void test_readImagesReturnsCorrectNumberOfImages(void)
 {
     GrayScaleImageSeries *series = NULL;
@@ -92,7 +95,8 @@ void test_readImagesReturnsCorrectLabels(void)
     TEST_ASSERT_NOT_NULL(series);
     TEST_ASSERT_NOT_NULL(series->labels);
     TEST_ASSERT_EQUAL_UINT16(2, series->count);
-    for (int i = 0; i < 2; i++) {
+    for (int i = 0; i < 2; i++)
+    {
         TEST_ASSERT_EQUAL_UINT8(expectedLabel, series->labels[i]);
     }
     clearSeries(series);
@@ -110,7 +114,7 @@ void test_readImagesFailsOnWrongFileTag(void)
 {
     const char *path = "testFile.info2";
     FILE *file = fopen(path, "w");
-    if(file != NULL)
+    if (file != NULL)
     {
         fprintf(file, "some_tag                  ");
         fclose(file);
@@ -119,25 +123,43 @@ void test_readImagesFailsOnWrongFileTag(void)
     remove(path);
 }
 
-// Tests der Hilfsfunktionen
+// Test der Hilfsfunktionen
 
-void test_read_header(void)
+void test_read_GrayScale_Pixel(void)
 {
+    GrayScaleImageSeries *series = NULL;
+    const char *path = "testFile.info2";
 
+    prepareImageFile(path, 8, 8, 1, 1);
+    series = readImages(path);
+
+    TEST_ASSERT_NOT_NULL(series);
+    TEST_ASSERT_NOT_NULL(series->images);
+    TEST_ASSERT_EQUAL_UINT16(1, series->count);
+
+    for (int i = 0; i < (8 * 8); i++)
+    {
+        TEST_ASSERT_EQUAL_UINT8((GrayScalePixelType)i, series->images->buffer[i]);
+    }
+
+    clearSeries(series);
+    remove(path);
 }
 
-void setUp(void) {
+void setUp(void)
+{
     // Falls notwendig, kann hier Vorbereitungsarbeit gemacht werden
 }
 
-void tearDown(void) {
+void tearDown(void)
+{
     // Hier kann Bereinigungsarbeit nach jedem Test durchgeführt werden
 }
 
 int main()
 {
     UNITY_BEGIN();
-    
+
     printf("\n============================\nImage input tests\n============================\n");
     RUN_TEST(test_readImagesReturnsCorrectNumberOfImages);
     RUN_TEST(test_readImagesReturnsCorrectImageWidth);
@@ -145,6 +167,7 @@ int main()
     RUN_TEST(test_readImagesReturnsCorrectLabels);
     RUN_TEST(test_readImagesReturnsNullOnNotExistingPath);
     RUN_TEST(test_readImagesFailsOnWrongFileTag);
+    RUN_TEST(test_read_GrayScale_Pixel);
 
     return UNITY_END();
 }
\ No newline at end of file