First tests for main program arguments validation

test/test_link_fixer.py

@@ -0,0 +1,73 @@
+from link_fixer import link_fixer
+import os
+from pathlib import Path
+import unittest
+
+class TestFixLinker(unittest.TestCase):
+
+    tgt_dir = Path("test/data/tgt_dir")
+    lnk_dir = Path("test/data/lnk_dir")
+    tgt_file = Path("test/data/tgt_dir/tgt_file.txt")
+    ln_non_exists = Path("test/data/link.txt")
+    ln_valid = Path("test/data/lnk_dir/ln_valid")
+    ln_valid_path = "../tgt_dir/tgt_file.txt"
+    ln_broken = Path("test/data/lnk_dir/tgt_file.txt")
+    ln_broken_path = "../tgt/tgt_.txt"
+    inexistent = Path("test/data/tgt_dir/inexistent.txt")
+
+    ln_ne_error = "Link argument matches no file or directory"
+    ln_gd_error = "Link is not broken!"
+    ln_ns_error = "Link argument is not a symbolic link"
+
+
+    def reset_dir(self, dir_path):
+        if not dir_path.is_dir():
+            if dir_path.exists():
+                dir_path.unlink()
+            os.mkdir(dir_path)
+        return
+    
+    def reset_file(self, file_path):
+        if not file_path.is_file():
+            if file_path.exists():
+                filepath.unlink()
+            open(file_path, 'a').close()
+
+    def setup_test(self):
+
+        self.reset_dir(self.tgt_dir)
+        self.reset_dir(self.lnk_dir)
+        self.reset_file(self.tgt_file)
+        self.reset_file(self.inexistent)
+        
+        
+        if self.ln_valid.exists() or self.ln_valid.is_symlink():
+            self.ln_valid.unlink()
+        self.ln_valid.symlink_to(self.ln_valid_path)
+        
+        if self.ln_broken.exists() or self.ln_broken.is_symlink():
+            self.ln_broken.unlink()
+        self.ln_broken.symlink_to(self.ln_broken_path)
+        self.inexistent.unlink()
+
+
+    def test_link_fixer(self):
+        self.setup_test()
+        
+        print("Test for inexistent link")
+        with self.assertRaises(SystemExit) as err:
+            link_fixer(self.ln_non_exists, self.tgt_dir)
+        self.assertEqual(err.exception.code, self.ln_ne_error)
+
+        print("Test for non-broken link")
+        with self.assertRaises(SystemExit) as err:
+            link_fixer(self.ln_valid, self.tgt_dir)
+        self.assertEqual(err.exception.code, self.ln_gd_error)
+
+        print("Test for non-link link")
+        with self.assertRaises(SystemExit) as err:
+            link_fixer(self.tgt_file, self.tgt_dir)
+        self.assertEqual(err.exception.code, self.ln_ns_error)
+
+if __name__ == "__main__":
+    unittest.main()