tests: Don't check qobject_type() before qobject_to_qbool()

qobject_to_qbool(obj) returns NULL when obj isn't a QBool.  Check
that instead of qobject_type(obj) == QTYPE_QBOOL.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Message-Id: <1487363905-9480-13-git-send-email-armbru@redhat.com>
Reviewed-by: NEric Blake <eblake@redhat.com>

tests/check-qjson.c

@@ -966,10 +966,8 @@ static void keyword_literal(void)
     QString *str;
 
     obj = qobject_from_json("true");
-    g_assert(obj != NULL);
-    g_assert(qobject_type(obj) == QTYPE_QBOOL);
-
     qbool = qobject_to_qbool(obj);
+    g_assert(qbool);
     g_assert(qbool_get_bool(qbool) == true);
 
     str = qobject_to_json(obj);
@@ -979,10 +977,8 @@ static void keyword_literal(void)
     QDECREF(qbool);
 
     obj = qobject_from_json("false");
-    g_assert(obj != NULL);
-    g_assert(qobject_type(obj) == QTYPE_QBOOL);
-
     qbool = qobject_to_qbool(obj);
+    g_assert(qbool);
     g_assert(qbool_get_bool(qbool) == false);
 
     str = qobject_to_json(obj);
@@ -991,23 +987,15 @@ static void keyword_literal(void)
 
     QDECREF(qbool);
 
-    obj = qobject_from_jsonf("%i", false);
-    g_assert(obj != NULL);
-    g_assert(qobject_type(obj) == QTYPE_QBOOL);
-
-    qbool = qobject_to_qbool(obj);
+    qbool = qobject_to_qbool(qobject_from_jsonf("%i", false));
+    g_assert(qbool);
     g_assert(qbool_get_bool(qbool) == false);
-
     QDECREF(qbool);
 
     /* Test that non-zero values other than 1 get collapsed to true */
-    obj = qobject_from_jsonf("%i", 2);
-    g_assert(obj != NULL);
-    g_assert(qobject_type(obj) == QTYPE_QBOOL);
-
-    qbool = qobject_to_qbool(obj);
+    qbool = qobject_to_qbool(qobject_from_jsonf("%i", 2));
+    g_assert(qbool);
     g_assert(qbool_get_bool(qbool) == true);
-
     QDECREF(qbool);
 
     obj = qobject_from_json("null");

tests/test-qobject-output-visitor.c

@@ -71,13 +71,13 @@ static void test_visitor_out_bool(TestOutputVisitorData *data,
                                   const void *unused)
 {
     bool value = true;
-    QObject *obj;
+    QBool *qbool;
 
     visit_type_bool(data->ov, NULL, &value, &error_abort);
 
-    obj = visitor_get(data);
-    g_assert(qobject_type(obj) == QTYPE_QBOOL);
-    g_assert(qbool_get_bool(qobject_to_qbool(obj)) == value);
+    qbool = qobject_to_qbool(visitor_get(data));
+    g_assert(qbool);
+    g_assert(qbool_get_bool(qbool) == value);
 }
 
 static void test_visitor_out_number(TestOutputVisitorData *data,
@@ -356,9 +356,7 @@ static void test_visitor_out_any(TestOutputVisitorData *data,
     qint = qobject_to_qint(qdict_get(qdict, "integer"));
     g_assert(qint);
     g_assert_cmpint(qint_get_int(qint), ==, -42);
-    qobj = qdict_get(qdict, "boolean");
-    g_assert(qobj);
-    qbool = qobject_to_qbool(qobj);
+    qbool = qobject_to_qbool(qdict_get(qdict, "boolean"));
     g_assert(qbool);
     g_assert(qbool_get_bool(qbool) == true);
     qstring = qobject_to_qstring(qdict_get(qdict, "string"));