Add tests for CLI

src/iact_estimator/tests/test_cli.py

@@ -0,0 +1,34 @@
+"""Tests for the Command-line interface."""
+
+
+def test_cli_version(script_runner):
+    from .. import __version__
+
+    result = script_runner.run(["iact-estimator", "--version"])
+    assert result.returncode == 0
+    assert result.stderr == f"{__version__}\n"
+
+
+def test_cli_config(script_runner, tmp_path):
+    result = script_runner.run(["iact-estimator", "config", "--to", tmp_path])
+    assert result.returncode == 0
+    assert result.stderr == "You're halfway there! Have fun!\n"
+
+    assert (tmp_path / "config.yml").is_file()
+
+
+def test_cli_run(script_runner, tmp_path):
+    script_runner.run(["iact-estimator", "config", "--to", tmp_path])
+    result = script_runner.run(
+        [
+            "iact-estimator",
+            "run",
+            "--config",
+            tmp_path / "config.yml",
+            "--source-name",
+            "Crab Nebula",
+            "--output-path",
+            tmp_path,
+        ],
+    )
+    assert result.returncode == 0