chore: Do not require --base-url for schemas loaded via a file when…

… dry run is enabled

src/schemathesis/cli/callbacks.py

@@ -22,7 +22,7 @@ def validate_schema(ctx: click.core.Context, param: click.core.Parameter, raw_va
         if not netloc:
             if "\x00" in raw_value or not utils.file_exists(raw_value):
                 raise click.UsageError("Invalid SCHEMA, must be a valid URL or file path.")
-            if "base_url" not in ctx.params:
+            if "base_url" not in ctx.params and not ctx.params.get("dry_run", False):
                 raise click.UsageError('Missing argument, "--base-url" is required for SCHEMA specified by file.')
         else:
             _validate_url(raw_value)

test/cli/test_commands.py

@@ -1679,3 +1679,10 @@ def test_exit_first(cli, schema_url, openapi_version):
     next_line = lines[idx + 1]
     assert next_line == ""
     assert "FAILURES" in lines[idx + 2]
+
+
+@pytest.mark.parametrize("openapi_version", (OpenAPIVersion("3.0"),))
+def test_base_url_not_required_for_dry_run(testdir, cli, openapi_version, empty_open_api_3_schema):
+    schema_file = testdir.makefile(".yaml", schema=yaml.dump(empty_open_api_3_schema))
+    result = cli.run(str(schema_file), "--dry-run")
+    assert result.exit_code == ExitCode.OK, result.stdout