Add cli tests

tests/test_cli.py

@@ -0,0 +1,36 @@
+from mysoc_validator.__main__ import app
+from typer.testing import CliRunner
+
+runner = CliRunner()
+
+
+def test_validate_popolo():
+    result = runner.invoke(
+        app,
+        [
+            "validate",
+            "--url",
+            "https://raw.githubusercontent.com/mysociety/parlparse/master/members/people.json",
+            "--type",
+            "popolo",
+        ],
+    )
+    assert result.exit_code == 0
+    assert "Valid Popolo file" in result.stdout
+
+
+def test_validate_transcript():
+    result = runner.invoke(
+        app,
+        ["validate", "--file", "data/debates2023-03-28d.xml", "--type", "transcript"],
+    )
+    assert result.exit_code == 0
+    assert "Valid Transcript file" in result.stdout
+
+
+def test_validate_interests():
+    result = runner.invoke(
+        app, ["validate", "--file", "data/regmem2024-05-28.xml", "--type", "interests"]
+    )
+    assert result.exit_code == 0
+    assert "Valid Interests file" in result.stdout