test: add unit tests for core, parser and operations

tests/test_exporter.py

@@ -0,0 +1,67 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+from sshctl.config.resolver import ResolvedHost
+from sshctl.export.exporter import export_csv, export_csv_to_file
+
+
+def test_export_csv_with_hosts() -> None:
+    hosts = [
+        ResolvedHost(
+            alias="server1",
+            hostname="10.0.0.1",
+            user="admin",
+            port=22,
+            proxy_jump="gw",
+            identity_file="~/.ssh/id_rsa",
+            options={},
+        ),
+        ResolvedHost(
+            alias="server2",
+            hostname="10.0.0.2",
+            user="root",
+            port=2222,
+            proxy_jump="",
+            identity_file="",
+            options={},
+        ),
+    ]
+
+    csv_content = export_csv(hosts)
+    lines = csv_content.strip().splitlines()
+    assert len(lines) == 3
+    assert lines[0] == "Host,HostName,User,Port,ProxyJump,IdentityFile"
+    assert "server1" in lines[1]
+    assert "server2" in lines[2]
+    assert "10.0.0.1" in lines[1]
+    assert "gw" in lines[1]
+
+
+def test_export_csv_to_file(tmp_path: Path) -> None:
+    hosts = [
+        ResolvedHost(
+            alias="test",
+            hostname="10.0.0.1",
+            user="root",
+            port=22,
+            proxy_jump="",
+            identity_file="",
+            options={},
+        ),
+    ]
+
+    path = export_csv_to_file(tmp_path / "output.csv", hosts)
+    assert path.exists()
+    content = path.read_text()
+    assert "test" in content
+    assert "10.0.0.1" in content
+
+
+def test_export_csv_requires_args() -> None:
+    raised = False
+    try:
+        export_csv()
+    except ValueError:
+        raised = True
+    assert raised, "Expected ValueError"