qapi: Add tests of complex objects within alternate

Upcoming patches will adjust how we visit an object branch of an
alternate; but we were completely lacking testsuite coverage.
Rectify this, so that the future patches will be able to highlight
the changes and still prove that we avoided regressions.

In particular, the use of a flat union UserDefFlatUnion rather
than a simple struct UserDefA as the branch will give us coverage
of an object with variants.  And visiting an alternate as both
the top level and as a nested member gives confidence in correct
memory allocation handling, especially if the test is run under
valgrind.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1455778109-6278-5-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

4 files changed, 67 insertions, 4 deletions

diff --git a/tests/qapi-schema/qapi-schema-test.json b/tests/qapi-schema/qapi-schema-test.json
index 353a34e..632964a 100644
--- a/tests/qapi-schema/qapi-schema-test.json
+++ b/tests/qapi-schema/qapi-schema-test.json
@@ -85,8 +85,10 @@
   'data': { 'value1' : 'UserDefC', # intentional forward reference
             'value2' : 'UserDefB' } }
 
+{ 'struct': 'WrapAlternate',
+  'data': { 'alt': 'UserDefAlternate' } }
 { 'alternate': 'UserDefAlternate',
-  'data': { 'uda': 'UserDefA', 's': 'str', 'i': 'int' } }
+  'data': { 'udfu': 'UserDefFlatUnion', 's': 'str', 'i': 'int' } }
 
 { 'struct': 'UserDefC',
   'data': { 'string1': 'str', 'string2': 'str' } }
diff --git a/tests/qapi-schema/qapi-schema-test.out b/tests/qapi-schema/qapi-schema-test.out
index 241aadb..f5e2a73 100644
--- a/tests/qapi-schema/qapi-schema-test.out
+++ b/tests/qapi-schema/qapi-schema-test.out
@@ -105,7 +105,7 @@ object UserDefA
     member boolean: bool optional=False
     member a_b: int optional=True
 alternate UserDefAlternate
-    case uda: UserDefA
+    case udfu: UserDefFlatUnion
     case s: str
     case i: int
 object UserDefB
@@ -172,6 +172,8 @@ object UserDefUnionBase2
     member enum1: QEnumTwo optional=False
 object UserDefZero
     member integer: int optional=False
+object WrapAlternate
+    member alt: UserDefAlternate optional=False
 event __ORG.QEMU_X-EVENT __org.qemu_x-Struct
 alternate __org.qemu_x-Alt
     case __org.qemu_x-branch: str
diff --git a/tests/test-qmp-input-visitor.c b/tests/test-qmp-input-visitor.c
index c72cdad..ef836d5 100644
--- a/tests/test-qmp-input-visitor.c
+++ b/tests/test-qmp-input-visitor.c
@@ -1,7 +1,7 @@
 /*
  * QMP Input Visitor unit-tests.
  *
- * Copyright (C) 2011, 2015 Red Hat Inc.
+ * Copyright (C) 2011-2016 Red Hat Inc.
  *
  * Authors:
  *  Luiz Capitulino <lcapitulino@redhat.com>
@@ -309,6 +309,7 @@ static void test_visitor_in_alternate(TestInputVisitorData *data,
     Visitor *v;
     Error *err = NULL;
     UserDefAlternate *tmp;
+    WrapAlternate *wrap;
 
     v = visitor_input_test_init(data, "42");
     visit_type_UserDefAlternate(v, NULL, &tmp, &error_abort);
@@ -322,10 +323,44 @@ static void test_visitor_in_alternate(TestInputVisitorData *data,
     g_assert_cmpstr(tmp->u.s, ==, "string");
     qapi_free_UserDefAlternate(tmp);
 
+    v = visitor_input_test_init(data, "{'integer':1, 'string':'str', "
+                                "'enum1':'value1', 'boolean':true}");
+    visit_type_UserDefAlternate(v, NULL, &tmp, &error_abort);
+    g_assert_cmpint(tmp->type, ==, QTYPE_QDICT);
+    g_assert_cmpint(tmp->u.udfu->integer, ==, 1);
+    g_assert_cmpstr(tmp->u.udfu->string, ==, "str");
+    g_assert_cmpint(tmp->u.udfu->enum1, ==, ENUM_ONE_VALUE1);
+    g_assert_cmpint(tmp->u.udfu->u.value1->boolean, ==, true);
+    g_assert_cmpint(tmp->u.udfu->u.value1->has_a_b, ==, false);
+    qapi_free_UserDefAlternate(tmp);
+
     v = visitor_input_test_init(data, "false");
     visit_type_UserDefAlternate(v, NULL, &tmp, &err);
     error_free_or_abort(&err);
     qapi_free_UserDefAlternate(tmp);
+
+    v = visitor_input_test_init(data, "{ 'alt': 42 }");
+    visit_type_WrapAlternate(v, NULL, &wrap, &error_abort);
+    g_assert_cmpint(wrap->alt->type, ==, QTYPE_QINT);
+    g_assert_cmpint(wrap->alt->u.i, ==, 42);
+    qapi_free_WrapAlternate(wrap);
+
+    v = visitor_input_test_init(data, "{ 'alt': 'string' }");
+    visit_type_WrapAlternate(v, NULL, &wrap, &error_abort);
+    g_assert_cmpint(wrap->alt->type, ==, QTYPE_QSTRING);
+    g_assert_cmpstr(wrap->alt->u.s, ==, "string");
+    qapi_free_WrapAlternate(wrap);
+
+    v = visitor_input_test_init(data, "{ 'alt': {'integer':1, 'string':'str', "
+                                "'enum1':'value1', 'boolean':true} }");
+    visit_type_WrapAlternate(v, NULL, &wrap, &error_abort);
+    g_assert_cmpint(wrap->alt->type, ==, QTYPE_QDICT);
+    g_assert_cmpint(wrap->alt->u.udfu->integer, ==, 1);
+    g_assert_cmpstr(wrap->alt->u.udfu->string, ==, "str");
+    g_assert_cmpint(wrap->alt->u.udfu->enum1, ==, ENUM_ONE_VALUE1);
+    g_assert_cmpint(wrap->alt->u.udfu->u.value1->boolean, ==, true);
+    g_assert_cmpint(wrap->alt->u.udfu->u.value1->has_a_b, ==, false);
+    qapi_free_WrapAlternate(wrap);
 }
 
 static void test_visitor_in_alternate_number(TestInputVisitorData *data,
diff --git a/tests/test-qmp-output-visitor.c b/tests/test-qmp-output-visitor.c
index 965f298..2b0f7e9 100644
--- a/tests/test-qmp-output-visitor.c
+++ b/tests/test-qmp-output-visitor.c
@@ -1,7 +1,7 @@
 /*
  * QMP Output Visitor unit-tests.
  *
- * Copyright (C) 2011, 2015 Red Hat Inc.
+ * Copyright (C) 2011-2016 Red Hat Inc.
  *
  * Authors:
  *  Luiz Capitulino <lcapitulino@redhat.com>
@@ -427,6 +427,7 @@ static void test_visitor_out_alternate(TestOutputVisitorData *data,
 {
     QObject *arg;
     UserDefAlternate *tmp;
+    QDict *qdict;
 
     tmp = g_new0(UserDefAlternate, 1);
     tmp->type = QTYPE_QINT;
@@ -453,6 +454,29 @@ static void test_visitor_out_alternate(TestOutputVisitorData *data,
 
     qapi_free_UserDefAlternate(tmp);
     qobject_decref(arg);
+
+    tmp = g_new0(UserDefAlternate, 1);
+    tmp->type = QTYPE_QDICT;
+    tmp->u.udfu = g_new0(UserDefFlatUnion, 1);
+    tmp->u.udfu->integer = 1;
+    tmp->u.udfu->string = g_strdup("str");
+    tmp->u.udfu->enum1 = ENUM_ONE_VALUE1;
+    tmp->u.udfu->u.value1 = g_new0(UserDefA, 1);
+    tmp->u.udfu->u.value1->boolean = true;
+
+    visit_type_UserDefAlternate(data->ov, NULL, &tmp, &error_abort);
+    arg = qmp_output_get_qobject(data->qov);
+
+    g_assert_cmpint(qobject_type(arg), ==, QTYPE_QDICT);
+    qdict = qobject_to_qdict(arg);
+    g_assert_cmpint(qdict_size(qdict), ==, 4);
+    g_assert_cmpint(qdict_get_int(qdict, "integer"), ==, 1);
+    g_assert_cmpstr(qdict_get_str(qdict, "string"), ==, "str");
+    g_assert_cmpstr(qdict_get_str(qdict, "enum1"), ==, "value1");
+    g_assert_cmpint(qdict_get_bool(qdict, "boolean"), ==, true);
+
+    qapi_free_UserDefAlternate(tmp);
+    qobject_decref(arg);
 }
 
 static void test_visitor_out_empty(TestOutputVisitorData *data,