target: Improve error reporting for CpuModelInfo member @props

query-cpu-model-comparison, query-cpu-model-baseline, and
query-cpu-model-expansion take CpuModelInfo arguments.  Errors in
@props members of these arguments are reported for 'props', without
further context.  For instance, s390x rejects

    {"execute": "query-cpu-model-comparison", "arguments": {"modela": {"name": "z13", "props": {}}, "modelb": {"name": "z14", "props": []}}}

with

    {"error": {"class": "GenericError", "desc": "Invalid parameter type for 'props', expected: object"}}

This is unusual; the common QAPI unmarshaling machinery would complain
about 'modelb.props'.  Our hand-written code to visit the @props
member neglects to provide the context.

Tweak it so it provides it.  The command above now fails with

    {"error": {"class": "GenericError", "desc": "Invalid parameter type for 'modelb.props', expected: dict"}}

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240305145919.2186971-4-armbru@redhat.com>
Acked-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/tests/qtest/arm-cpu-features.c b/tests/qtest/arm-cpu-features.c
index 1daceb2e31..9d6e6190d5 100644
--- a/tests/qtest/arm-cpu-features.c
+++ b/tests/qtest/arm-cpu-features.c
@@ -213,7 +213,8 @@ static void assert_bad_props(QTestState *qts, const char *cpu_type)
     error = resp_get_error(resp);
     g_assert(error);
     g_assert_cmpstr(error, ==,
-                    "Invalid parameter type for 'props', expected: object");
+                    "Invalid parameter type for 'model.props',"
+                    " expected: object");
     qobject_unref(resp);
 }
 
@@ -446,7 +447,7 @@ static void test_query_cpu_model_expansion(const void *data)
     assert_bad_props(qts, "max");
     assert_error(qts, "foo", "The CPU type 'foo' is not a recognized "
                  "ARM CPU type", NULL);
-    assert_error(qts, "max", "Parameter 'props.not-a-prop' is unexpected",
+    assert_error(qts, "max", "Parameter 'model.props.not-a-prop' is unexpected",
                  "{ 'not-a-prop': false }");
     assert_error(qts, "host", "The CPU type 'host' requires KVM", NULL);