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Co-authored-by: Copilot <copilot@github.com>

tests/test_input_parser.py

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+from pathlib import Path
+
+import pytest
+
+from tai.input_parser import InputValidationError, build_request
+
+
+def test_build_request_normalizes_values() -> None:
+    req = build_request(
+        issue=" apache fails to start ",
+        host=" web01 ",
+        port=5566,
+        target_paths=["/etc/apache2", "~/logs"],
+        identity_file="~/.ssh/id_ed25519",
+        jump_host=" bastion01 ",
+        ignore_ssh_config=True,
+    )
+
+    assert req.issue == "apache fails to start"
+    assert req.host == "web01"
+    assert req.port == 5566
+    assert req.target_paths[0] == Path("/etc/apache2")
+    assert req.target_paths[1] == Path("~/logs").expanduser()
+    assert req.identity_file == Path("~/.ssh/id_ed25519").expanduser()
+    assert req.jump_host == "bastion01"
+    assert req.ignore_ssh_config is True
+
+
+def test_build_request_rejects_empty_issue() -> None:
+    with pytest.raises(InputValidationError):
+        build_request(
+            issue="   ",
+            host="web01",
+            port=22,
+            target_paths=[],
+            identity_file=None,
+            jump_host=None,
+            ignore_ssh_config=False,
+        )
+
+
+def test_build_request_rejects_empty_host() -> None:
+    with pytest.raises(InputValidationError):
+        build_request(
+            issue="apache down",
+            host="   ",
+            port=22,
+            target_paths=[],
+            identity_file=None,
+            jump_host=None,
+            ignore_ssh_config=False,
+        )
+
+
+def test_build_request_rejects_invalid_port() -> None:
+    with pytest.raises(InputValidationError):
+        build_request(
+            issue="apache down",
+            host="web01",
+            port=70000,
+            target_paths=[],
+            identity_file=None,
+            jump_host=None,
+            ignore_ssh_config=False,
+        )