Use better error message

for missing requirement files

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

src/python_inspector/resolve_cli.py

@@ -216,9 +216,10 @@ def resolve_dependencies(
             invalid_requirement_files.append(req_file)
 
     if invalid_requirement_files:
+        invalid_requirement_files = "\n".join(invalid_requirement_files)
         click.secho(
-            f"""The following requirement files are not valid pip
-            requirement file names: {invalid_requirement_files}""",
+            "The following requirement files are not valid pip "
+            f"requirement file names: \n{invalid_requirement_files}",
             err=True,
         )
         ctx.exit(1)

tests/data/pdt.txt

@@ -218,9 +218,16 @@ def test_passing_of_netrc_file_that_does_not_exist():
 
 
 def test_passing_of_wrong_requiremts_file():
-    test_file = test_env.get_test_loc("pdt.txt")
-    options = ["--requirement", test_file, "--json", "-"]
-    run_cli(options=options, expected_rc=1)
+    test_file = test_env.get_temp_file(file_name="pdt.txt", extension="")
+    with open(test_file, "w") as f:
+        f.write("")
+    test_file_2 = test_env.get_temp_file(file_name="setup.py", extension="")
+    with open(test_file_2, "w") as f:
+        f.write("")
+    options = ["--requirement", test_file, "--json", "-", "--requirement", test_file_2]
+    result = run_cli(options=options, expected_rc=1)
+    assert "pdt.txt" in result.output
+    assert "setup.py" in result.output
 
 
 def test_passing_of_no_json_output_flag():