fixed platform not moving problem

apps/autocal/tests/test_errors.py

@@ -52,3 +52,45 @@ def test_an_unknown_code_points_at_zdevelop():
 
 def test_a_documented_code_gets_no_hint_appended():
     assert errors.describe_with_hint(30000) == errors.describe(30000)
+
+
+# ------------------------------------------------- host-library (PC) codes
+
+
+def test_a_host_library_code_is_not_sent_to_the_firmware_table():
+    """``20008`` is not a controller code: ZDevelop cannot have it.
+
+    It is what ``ZAux_OpenEth`` returned on the first, transient attempt at the
+    bench, and the old text sent the operator to a table that cannot contain it.
+    """
+    message = errors.describe_with_hint(20008)
+
+    assert "20008" in message
+    assert errors.UNKNOWN_HINT not in message
+    assert "上位机" in message
+    assert errors.HOST_LIB_HINT_ZH in message
+
+
+def test_the_host_library_hint_is_localised():
+    zh = errors.describe_with_hint(20008)
+    en = errors.describe_with_hint(20008, language="en_US")
+
+    assert errors.HOST_LIB_HINT_EN in en
+    assert zh != en
+
+
+@pytest.mark.parametrize("code", [20000, 20008, 25000, 29999])
+def test_the_host_library_range_is_recognised(code):
+    assert errors.is_host_lib_error(code)
+    assert "错误码" not in errors.describe(code)
+
+
+@pytest.mark.parametrize("code", [19999, 30000, 30005, 12345, 222, 0])
+def test_codes_outside_the_host_range_are_not_labelled_as_library_faults(code):
+    assert not errors.is_host_lib_error(code)
+
+
+def test_a_controller_code_keeps_the_firmware_hint():
+    """222 is firmware (``Other error``), so ZDevelop is still the right pointer."""
+    message = errors.describe_with_hint(222)
+    assert errors.UNKNOWN_HINT in message