test: add unit tests for core, parser and operations

tests/test_resolver.py

@@ -0,0 +1,101 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from sshctl.config.resolver import (
+    ResolvedHost,
+    _parse_ssh_g_output,
+    resolve_all_hosts,
+    resolve_host,
+)
+from sshctl.core.exceptions import ResolverError
+
+
+def test_resolved_host_namedtuple() -> None:
+    host = ResolvedHost(
+        alias="server1",
+        hostname="10.0.0.1",
+        user="admin",
+        port=22,
+        proxy_jump="gw",
+        identity_file="~/.ssh/id_rsa",
+        options={"hostname": "10.0.0.1", "user": "admin"},
+    )
+    assert host.alias == "server1"
+    assert host.hostname == "10.0.0.1"
+    assert host.port == 22
+    assert host.proxy_jump == "gw"
+
+
+def test_parse_ssh_g_output_basic() -> None:
+    text = "hostname 10.0.0.1\nuser admin\nport 2222\n"
+    opts = _parse_ssh_g_output(text)
+    assert opts["hostname"] == "10.0.0.1"
+    assert opts["user"] == "admin"
+    assert opts["port"] == "2222"
+
+
+def test_parse_ssh_g_output_empty() -> None:
+    assert _parse_ssh_g_output("") == {}
+
+
+def test_parse_ssh_g_output_blank_lines() -> None:
+    text = "\n\nhostname test\n\n"
+    opts = _parse_ssh_g_output(text)
+    assert opts == {"hostname": "test"}
+
+
+def test_parse_ssh_g_output_first_wins() -> None:
+    text = "hostname first\nhostname second\n"
+    opts = _parse_ssh_g_output(text)
+    assert opts["hostname"] == "first"
+
+
+def test_parse_ssh_g_output_quoted_values() -> None:
+    text = 'identityfile "~/.ssh/key"\n'
+    opts = _parse_ssh_g_output(text)
+    assert opts["identityfile"] == "~/.ssh/key"
+
+
+def test_parse_ssh_g_output_single_word_line() -> None:
+    text = "invalid\nhostname test\n"
+    opts = _parse_ssh_g_output(text)
+    assert opts == {"hostname": "test"}
+
+
+def test_resolve_host_ssh_not_found() -> None:
+    with pytest.raises(ResolverError, match="Failed to resolve"):
+        resolve_host("test", "/nonexistent/config", ssh_bin="ssh-nonexistent")
+
+
+def test_resolve_all_hosts_empty_config(tmp_path: Path) -> None:
+    config_path = tmp_path / "config"
+    config_path.write_text("Host *\n  User root\n")
+    results = resolve_all_hosts(config_path, ssh_bin="ssh-nonexistent")
+    assert results == []
+
+
+def test_resolve_host_uses_correct_cmd() -> None:
+    import subprocess
+
+    def _fake_run(*_args: object, **_kwargs: object) -> object:
+        class FakeResult:
+            returncode = 0
+            stdout = "hostname 10.0.0.1\nuser testuser\nport 2222\nproxyjump jumpbox\n"
+            stderr = ""
+
+        return FakeResult()
+
+    original_run = subprocess.run
+    subprocess.run = _fake_run  # type: ignore[assignment]
+    try:
+        host = resolve_host("myserver", "/tmp/fake_config")
+        assert host.alias == "myserver"
+        assert host.hostname == "10.0.0.1"
+        assert host.user == "testuser"
+        assert host.port == 2222
+        assert host.proxy_jump == "jumpbox"
+    finally:
+        subprocess.run = original_run