Initial upload: ErrorFix CLI with rule engine and pattern matching

tests/test_cli.py

@@ -0,0 +1,46 @@
+import pytest
+from click.testing import CliRunner
+from errorfix.cli import cli
+
+
+class TestCLI:
+    def setup_method(self):
+        self.runner = CliRunner()
+
+    def test_cli_help(self):
+        result = self.runner.invoke(cli, ['--help'])
+        assert result.exit_code == 0
+        assert 'cli' in result.output.lower()
+
+    def test_fix_command_help(self):
+        result = self.runner.invoke(cli, ['fix', '--help'])
+        assert result.exit_code == 0
+        assert 'input' in result.output.lower()
+
+    def test_fix_with_stdin_input(self):
+        result = self.runner.invoke(cli, ['fix', '-i', '-'], input='Unknown error')
+        assert result.exit_code == 0
+
+    def test_fix_with_rule_path(self):
+        result = self.runner.invoke(
+            cli,
+            ['fix', '-r', 'rules/python', '-i', '-'],
+            input="NameError: name 'foo' is not defined"
+        )
+        assert result.exit_code == 0
+
+    def test_fix_with_json_output(self):
+        result = self.runner.invoke(
+            cli,
+            ['fix', '-f', 'json', '-i', '-'],
+            input='Unknown error'
+        )
+        assert result.exit_code == 0
+
+    def test_plugins_command(self):
+        result = self.runner.invoke(cli, ['plugins'])
+        assert result.exit_code == 0
+
+    def test_check_command(self):
+        result = self.runner.invoke(cli, ['check', '-r', 'rules/python'])
+        assert result.exit_code == 0