fixed issue with logging if no [tool.deptry] section was found in pyp…

deptry/cli.py

@@ -30,13 +30,20 @@ def convert(
 COMMA_SEPARATED_TUPLE = CommaSeparatedTupleParamType()
 
 
+def configure_logger(ctx: click.Context, _param: click.Parameter, value: bool) -> None:
+    log_level = logging.DEBUG if value else logging.INFO
+    logging.basicConfig(level=log_level, handlers=[logging.StreamHandler()], format="%(message)s")
+
+
 @click.command()
 @click.argument("root", type=click.Path(exists=True), required=False)
 @click.option(
     "--verbose",
     "-v",
     is_flag=True,
     help="Boolean flag for verbosity. Using this flag will display more information about files, imports and dependencies while running.",
+    is_eager=True,
+    callback=configure_logger,
 )
 @click.option(
     "--skip-obsolete",
@@ -190,9 +197,6 @@ def deptry(
 
     """
 
-    log_level = logging.DEBUG if verbose else logging.INFO
-    logging.basicConfig(level=log_level, handlers=[logging.StreamHandler()], format="%(message)s")
-
     if version:
         display_deptry_version()
         sys.exit(0)

tests/test_cli.py

@@ -73,6 +73,18 @@ def test_cli_extend_exclude(dir_with_venv_installed):
         assert "The project contains obsolete dependencies:\n\n\tisort\n\trequests\n\ttoml\n\n" in result.stderr
 
 
+def test_cli_verbose(dir_with_venv_installed):
+    with run_within_dir(str(dir_with_venv_installed)):
+        result = subprocess.run(shlex.split("poetry run deptry . "), capture_output=True, text=True)
+        assert result.returncode == 1
+        assert not "The project contains the following dependencies:" in result.stderr
+
+    with run_within_dir(str(dir_with_venv_installed)):
+        result = subprocess.run(shlex.split("poetry run deptry . -v "), capture_output=True, text=True)
+        assert result.returncode == 1
+        assert "The project contains the following dependencies:" in result.stderr
+
+
 def test_cli_with_json_output(dir_with_venv_installed):
     with run_within_dir(str(dir_with_venv_installed)):