Fix: Coverage and lint

dir_content_diff/base_comparators.py

@@ -631,8 +631,7 @@ def diff(self, ref, comp, *args, **kwargs):
         res = pdfdiff_pages(ref, comp, *args, **kwargs)
         if not res:
             return False
-        else:
-            return res
+        return res
 
     def __call__(self, ref_file, comp_file, *args, **kwargs):
         """Process arguments before calling the diff method."""

dir_content_diff/cli/__init__.py

@@ -17,6 +17,7 @@
 import click
 from yaml import safe_load
 
+from dir_content_diff import _DEFAULT_EXPORT_SUFFIX
 from dir_content_diff import compare_files
 from dir_content_diff import compare_trees
 from dir_content_diff import export_formatted_file
@@ -42,22 +43,27 @@ def setup_logger(level: str = "info"):
     )
 
 
-def load_config(ctx, param, value):
+def load_config(ctx, param, value):  # pylint: disable=unused-argument
     """Load configuration from the given path."""
+    # pylint: disable=raise-missing-from
     ctx.config = {}
     if value is not None:
         try:
             ctx.config = json.loads(value)
-        except Exception as json_exc:
+        except Exception:  # pylint: disable=broad-exception-caught
+            path = Path(value)
+            if not path.exists():
+                msg = f"The file '{path}' does not exist."
+                raise FileNotFoundError(msg)
             try:
-                path = Path(value)
-                if not path.exists():
-                    msg = f"The file '{path}' does not exist."
-                    raise FileNotFoundError(msg)
-                with path.open() as f:
+                with path.open(encoding="utf-8") as f:
                     ctx.config = safe_load(f.read())
-            except Exception as path_exc:
-                raise path_exc from json_exc
+            except Exception:  # pylint: disable=broad-exception-caught
+                msg = (
+                    "Could not load the configuration because it could not be parsed as a JSON "
+                    "string nor as a YAML file."
+                )
+                raise SyntaxError(msg)
 
 
 @click.command(
@@ -149,8 +155,22 @@ def input_diff(ref, comp, config, export_formatted_files=False, sort_diffs=False
         diff = compare_files(ref, comp, comparator, **config)
         res = {str(ref): diff} if diff is not False else {}
         if export_formatted_files:
-            export_formatted_file(ref, **config)
-            export_formatted_file(comp, **config)
+            export_formatted_file(
+                ref,
+                ref.with_name(ref.stem + _DEFAULT_EXPORT_SUFFIX).with_suffix(
+                    ref.suffix
+                ),
+                comparator,
+                **config,
+            )
+            export_formatted_file(
+                comp,
+                comp.with_name(comp.stem + _DEFAULT_EXPORT_SUFFIX).with_suffix(
+                    comp.suffix
+                ),
+                comparator,
+                **config,
+            )
 
     if res:
         if sort_diffs:

tests/test_cli.py

@@ -11,6 +11,7 @@
 
 import json
 import logging
+import re
 
 import pytest
 import yaml
@@ -20,6 +21,8 @@
 
 
 class TestCli:
+    """Tests of the CLI."""
+
     @pytest.fixture
     def config(self, tmp_path):
         """The config as a dict."""
@@ -179,50 +182,86 @@ def test_diff_tree(
         )
         assert (tmp_path / "diff-pdf" / "file.pdf" / "diff-1.png").exists()
 
+        # Test with files and formatted files
+        caplog.set_level(logging.DEBUG, logger="dir-content-diff")
+        caplog.clear()
+        ref_file = ref_tree / "file.json"
+        res_file = res_tree_diff / "file.json"
+        result = cli_runner.invoke(
+            dir_content_diff.cli.main,
+            [str(ref_file), str(res_file), "--config", config_file_str, "-f"],
+            catch_exceptions=False,
+        )
+        assert result.stdout == ""
+        nb_format_msg = 0
+        for i in caplog.messages:
+            if not i.startswith("Format:"):
+                continue
+            match = re.match(r"Format: \S+ into \S+", i)
+            assert match is not None
+            nb_format_msg += 1
+        assert nb_format_msg == 2
+        assert (tmp_path / "ref" / "file_FORMATTED.json").exists()
+        assert (tmp_path / "res" / "file_FORMATTED.json").exists()
+
     class TestFailures:
-        def test_dir_file(self, cli_runner, caplog, ref_tree, res_tree_diff):
+        """Test that the proper exceptions are raised."""
+
+        def test_dir_file(self, cli_runner, ref_tree, res_tree_diff):
             """Test exception when comparing a directory with a file."""
             ref_file = ref_tree / "file.pdf"
             res_file = res_tree_diff / "file.pdf"
             with pytest.raises(
                 ValueError,
-                match=r"The reference and compared inputs must both be either two directories or two files\.",
+                match=(
+                    r"The reference and compared inputs must both be either two directories or two"
+                    r" files\."
+                ),
             ):
-                result = cli_runner.invoke(
+                cli_runner.invoke(
                     dir_content_diff.cli.main,
                     [str(ref_tree), str(res_file)],
                     catch_exceptions=False,
                 )
             with pytest.raises(
                 ValueError,
-                match=r"The reference and compared inputs must both be either two directories or two files\.",
+                match=(
+                    r"The reference and compared inputs must both be either two directories or two"
+                    r" files\."
+                ),
             ):
-                result = cli_runner.invoke(
+                cli_runner.invoke(
                     dir_content_diff.cli.main,
                     [str(ref_file), str(res_tree_diff)],
                     catch_exceptions=False,
                 )
 
-        def test_not_existing_config(self, cli_runner, caplog):
+        def test_not_existing_config(self, cli_runner):
             """Test exception when the config file does not exist."""
             with pytest.raises(
                 FileNotFoundError,
                 match=r"The file '/NOT/EXISTING/FILE' does not exist\.",
             ):
-                result = cli_runner.invoke(
+                cli_runner.invoke(
                     dir_content_diff.cli.main,
                     ["/A/FILE", "/ANOTHER/FILE", "--config", "/NOT/EXISTING/FILE"],
                     catch_exceptions=False,
                 )
 
-        def test_bad_yaml_config(self, tmp_path, cli_runner, caplog):
+        def test_bad_yaml_config(self, tmp_path, cli_runner):
             """Test exception when the config file does not exist."""
             filepath = tmp_path / "config_file.yaml"
             with filepath.open("w", encoding="utf-8") as f:
                 f.write("entry: &A !!!")
 
-            with pytest.raises(yaml.constructor.ConstructorError):
-                result = cli_runner.invoke(
+            with pytest.raises(
+                SyntaxError,
+                match=(
+                    r"Could not load the configuration because it could not be parsed as a JSON "
+                    r"string nor as a YAML file\."
+                ),
+            ):
+                cli_runner.invoke(
                     dir_content_diff.cli.main,
                     ["/A/FILE", "/ANOTHER/FILE", "--config", str(filepath)],
                     catch_exceptions=False,