1 files changed, 83 insertions, 0 deletions
diff --git a/tests/pq/test_misc.py b/tests/pq/test_misc.py
new file mode 100644
index 0000000..599758f
--- /dev/null
+++ b/tests/pq/test_misc.py
@@ -0,0 +1,83 @@
+import pytest
+
+import psycopg
+from psycopg import pq
+
+
+def test_error_message(pgconn):
+    res = pgconn.exec_(b"wat")
+    assert res.status == pq.ExecStatus.FATAL_ERROR
+    msg = pq.error_message(pgconn)
+    assert "wat" in msg
+    assert msg == pq.error_message(res)
+    primary = res.error_field(pq.DiagnosticField.MESSAGE_PRIMARY)
+    assert primary.decode("ascii") in msg
+
+    with pytest.raises(TypeError):
+        pq.error_message(None)  # type: ignore[arg-type]
+
+    res.clear()
+    assert pq.error_message(res) == "no details available"
+    pgconn.finish()
+    assert "NULL" in pq.error_message(pgconn)
+
+
+@pytest.mark.crdb_skip("encoding")
+def test_error_message_encoding(pgconn):
+    res = pgconn.exec_(b"set client_encoding to latin9")
+    assert res.status == pq.ExecStatus.COMMAND_OK
+
+    res = pgconn.exec_('select 1 from "foo\u20acbar"'.encode("latin9"))
+    assert res.status == pq.ExecStatus.FATAL_ERROR
+
+    msg = pq.error_message(pgconn)
+    assert "foo\u20acbar" in msg
+
+    msg = pq.error_message(res)
+    assert "foo\ufffdbar" in msg
+
+    msg = pq.error_message(res, encoding="latin9")
+    assert "foo\u20acbar" in msg
+
+    msg = pq.error_message(res, encoding="ascii")
+    assert "foo\ufffdbar" in msg
+
+
+def test_make_empty_result(pgconn):
+    pgconn.exec_(b"wat")
+    res = pgconn.make_empty_result(pq.ExecStatus.FATAL_ERROR)
+    assert res.status == pq.ExecStatus.FATAL_ERROR
+    assert b"wat" in res.error_message
+
+    pgconn.finish()
+    res = pgconn.make_empty_result(pq.ExecStatus.FATAL_ERROR)
+    assert res.status == pq.ExecStatus.FATAL_ERROR
+    assert res.error_message == b""
+
+
+def test_result_set_attrs(pgconn):
+    res = pgconn.make_empty_result(pq.ExecStatus.COPY_OUT)
+    assert res.status == pq.ExecStatus.COPY_OUT
+
+    attrs = [
+        pq.PGresAttDesc(b"an_int", 0, 0, 0, 23, 0, 0),
+        pq.PGresAttDesc(b"a_num", 0, 0, 0, 1700, 0, 0),
+        pq.PGresAttDesc(b"a_bin_text", 0, 0, 1, 25, 0, 0),
+    ]
+    res.set_attributes(attrs)
+    assert res.nfields == 3
+
+    assert res.fname(0) == b"an_int"
+    assert res.fname(1) == b"a_num"
+    assert res.fname(2) == b"a_bin_text"
+
+    assert res.fformat(0) == 0
+    assert res.fformat(1) == 0
+    assert res.fformat(2) == 1
+
+    assert res.ftype(0) == 23
+    assert res.ftype(1) == 1700
+    assert res.ftype(2) == 25
+
+    with pytest.raises(psycopg.OperationalError):
+        res.set_attributes(attrs)