check for error code 600 and print error message

add filter tests

obsws_cli/filter.py

@@ -1,5 +1,6 @@
 """module containing commands for manipulating filters in scenes."""
 
+import obsws_python as obsws
 import typer
 from rich.console import Console
 from rich.table import Table
@@ -20,7 +21,14 @@ def main():
 @app.command('list | ls')
 def list(ctx: typer.Context, source_name: str):
     """List filters for a source."""
-    resp = ctx.obj.get_source_filter_list(source_name)
+    try:
+        resp = ctx.obj.get_source_filter_list(source_name)
+    except obsws.error.OBSSDKError as e:
+        if e.code == 600:
+            err_console.print(f"No source was found by the name of '{source_name}'.")
+            raise typer.Exit(1)
+        else:
+            raise
 
     if not resp.filters:
         out_console.print(f'No filters found for source {source_name}')

tests/test_filter.py

@@ -0,0 +1,30 @@
+"""Unit tests for the filter command in the OBS WebSocket CLI."""
+
+from typer.testing import CliRunner
+
+from obsws_cli.app import app
+
+runner = CliRunner(mix_stderr=False)
+
+
+def test_filter_list():
+    """Test the filter list command on an audio source."""
+    result = runner.invoke(app, ['filter', 'list', 'Mic/Aux'])
+    assert result.exit_code == 0
+    assert 'Filters for Source: Mic/Aux' in result.stdout
+    assert 'pytest filter' in result.stdout
+
+
+def test_filter_list_scene():
+    """Test the filter list command on a scene."""
+    result = runner.invoke(app, ['filter', 'list', 'pytest_scene'])
+    assert result.exit_code == 0
+    assert 'Filters for Source: pytest_scene' in result.stdout
+    assert 'pytest filter' in result.stdout
+
+
+def test_filter_list_invalid_source():
+    """Test the filter list command with an invalid source."""
+    result = runner.invoke(app, ['filter', 'list', 'invalid_source'])
+    assert result.exit_code != 0
+    assert "No source was found by the name of 'invalid_source'" in result.stderr