feat(delta): output rich table to stderr

Author: fyhertz

src/ops2deb/cli.py

@@ -146,7 +146,7 @@ def print_state_delta_as_rich_table(state_delta: StateDelta) -> None:
         table.add_row("[red]-[/]", package.name, package.version, package.architecture)
     for package in state_delta.added:
         table.add_row("[green]+[/]", package.name, package.version, package.architecture)
-    console = Console()
+    console = Console(stderr=True)
     console.print(table)
 
 
@@ -335,10 +335,9 @@ def delta(
         resources = load_resources(configurations_search_pattern)
         packages = list_repository_packages(debian_repository)
         state_delta = compute_state_delta(packages, resources.blueprints)
+        print_state_delta_as_rich_table(state_delta)
         if output_as_json:
             print(state_delta.json(sort_keys=True, indent=2))
-        else:
-            print_state_delta_as_rich_table(state_delta)
     except Ops2debError as e:
         error(e, exit_code)
 

tests/test_ops2deb.py

@@ -1154,7 +1154,7 @@ def test_delta__outputs_rich_table_when_json_option_is_not_used(
 
     # Then
     assert result.exit_code == 0
-    assert result.stdout.split("\n") == expected_output_lines
+    assert result.stderr.split("\n")[3:] == expected_output_lines
 
 
 def test_delta__outputs_a_json_when_json_option_is_used(