Initial commit to photo-dater with pytest test

pytest/test_cmd_arguments.py

@@ -0,0 +1,43 @@
+
+import pytest
+import random
+import string
+import subprocess
+
+from helpers import *
+from fixtures import *
+
+cmd = 'python3 updatescannedpics.py'
+
+@pytest.mark.parametrize("cmd_line", ["-h", "--help"])
+def test_help(cmd_line):
+    command = f'{cmd} {cmd_line}'.split()
+    output = subprocess.run(command, capture_output=True, encoding='UTF-8')
+    
+    assert output.returncode == 1
+    assert output.stdout == "-i Input Directory\n-o Output Directory\n-m My Pre-Configured Directory Layout\nDefaults directory to PWD\n"
+
+def test_bad_param():
+    bad_options = [char for char in string.ascii_letters]
+    bad_options.remove('h')
+    bad_options.remove('i')
+    bad_options.remove('o')
+    bad_options.remove('m')
+
+    rand_bad_opt = random.choice(bad_options)
+    command = f'{cmd} -{rand_bad_opt}'.split()
+    output = subprocess.run(command, capture_output=True, encoding='UTF-8')
+    
+    assert output.returncode == 2
+    assert output.stdout == f"option -{rand_bad_opt} not recognized\n-i Input Directory\n-o Output Directory\n-m My Pre-Configured Directory Layout\nDefaults directory to PWD\n"
+
+@pytest.mark.parametrize("cmd_line, expected", [("", "Not Using"), ("-m", "Using")])
+def test_my_format(cmd_line, expected, log_file):
+    command = f'{cmd} {cmd_line}'
+    run_successfull_cmd(command)
+
+    with open(log_file, 'r') as my_log:
+        lines = my_log.readlines()
+        assert f"{expected} pre formated directories" in lines[2]
+
+