✅ Added Click test cases

requirements.txt

@@ -4,6 +4,7 @@ elasticsearch==8.9.0
 Faker==19.6.2
 loguru==0.7.2
 pytest==7.4.2
+pytest-click==1.1.0
 pytest-cov==4.1.0
 pytest-emoji==0.2.0
 pytest-loguru==0.2.0

test/click/cli_test.py

@@ -0,0 +1,60 @@
+"""Click CLI test cases."""
+import inspect
+from pathlib import Path
+from test.esxport._export_test import TestExport
+from unittest.mock import patch
+
+from click.testing import CliRunner
+from typing_extensions import Self
+
+from src.esxport import EsXport
+from src.esxport_cli import cli
+
+args = {
+    "q": '{"query":{"match_all":{}}}',
+    "o": "output.csv",
+    "i": "index1",
+}
+usage_error_code = 2
+
+
+# noinspection PyTypeChecker
+class TestCli:
+    """Cli Test cases."""
+
+    def test_query_is_mandatory(self: Self, cli_runner: CliRunner) -> None:
+        """Test Query param is mandatory."""
+        query_missing = "Error: Missing option '-q' / '--query'."
+        result = cli_runner.invoke(cli, [], catch_exceptions=False)
+        assert query_missing in result.output
+        assert result.exit_code == usage_error_code
+
+    def test_output_file_is_mandatory(self: Self, cli_runner: CliRunner) -> None:
+        """Test Query param is mandatory."""
+        query_missing = "Error: Missing option '-o' / '--output-file'."
+        result = cli_runner.invoke(cli, ["-q", args["q"]], catch_exceptions=False)
+        assert query_missing in result.output
+        assert result.exit_code == usage_error_code
+
+    def test_index_is_mandatory(self: Self, cli_runner: CliRunner) -> None:
+        """Test Index param is mandatory."""
+        query_missing = "Error: Missing option '-i' / '--index-prefixes'."
+        result = cli_runner.invoke(cli, ["-q", args["q"], "-o", args["o"]], input="secret\n", catch_exceptions=False)
+        assert query_missing in result.output
+        assert result.exit_code == usage_error_code
+
+    def test_mandatory(self: Self, cli_runner: CliRunner, esxport_obj_with_data: EsXport) -> None:
+        """Test Index param is mandatory."""
+        esxport_obj_with_data.opts.output_file = f"{inspect.stack()[0].function}.csv"
+        with patch("src.esxport.EsXport", return_value=esxport_obj_with_data):
+            result = cli_runner.invoke(
+                cli,
+                ["-q", args["q"], "-o", args["o"], "-i", args["i"]],
+                input="password\n",
+                catch_exceptions=False,
+            )
+            assert result.exit_code == 0
+        with Path(esxport_obj_with_data.opts.output_file).open("r") as fp:
+            lines = len(fp.readlines())
+            assert lines == esxport_obj_with_data.es_client.search()["hits"]["total"]["value"] + 1  # 1 for header
+        TestExport.rm_csv_export_file(esxport_obj_with_data.opts.output_file)