Initial commit to photo-dater with pytest test

pytest/helpers.py

@@ -0,0 +1,25 @@
+import random
+import string
+import subprocess
+
+def run_successfull_cmd(command):
+    command = command.split()
+    output = subprocess.run(command, capture_output=True, encoding='UTF-8')
+    assert output.returncode == 0
+    return output.stdout
+
+def gen_rand_name(max_name_len):
+    name_len = random.randint(3, max_name_len)
+    return ''.join(random.choice(string.ascii_letters) for x in range(name_len))
+
+def check_log_string(log_file, search_str):
+    lines = ''
+    with open(log_file, 'r') as my_log:
+        lines = my_log.readlines()
+        for line in lines:
+            if search_str in line:
+                return True
+
+    print(lines)
+    return False
+