None of the existing QMP or QGA interfaces uses a union with a
base type but no discriminator; it is easier to avoid this in
the generator to save room for other future extensions more likely
to be useful (the previous commit added the test
union-base-no-discriminator to ensure that we eventually give an
error message).  Meanwhile, the tests of UserDefNativeListUnion
serve to validate code generation of simple unions, except that it
did not have full coverage in the strict test.

Fix some indentation and long lines while at it.

Signed-off-by: Eric Blake <ebl...@redhat.com>
---
 scripts/qapi-types.py                   |  7 ++-
 scripts/qapi-visit.py                   | 13 +++---
 tests/qapi-schema/qapi-schema-test.json |  4 --
 tests/qapi-schema/qapi-schema-test.out  |  2 -
 tests/test-qmp-input-strict.c           | 57 +++++++++++------------
 tests/test-qmp-input-visitor.c          | 80 +++++++++++++--------------------
 tests/test-qmp-output-visitor.c         | 74 +++++++++++-------------------
 7 files changed, 95 insertions(+), 142 deletions(-)

diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index e400b03..f6fb930 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -242,10 +242,9 @@ struct %(name)s
 ''')

     if base:
-        base_fields = find_struct(base)['data']
-        if discriminator:
-            base_fields = base_fields.copy()
-            del base_fields[discriminator]
+        assert discriminator
+        base_fields = find_struct(base)['data'].copy()
+        del base_fields[discriminator]
         ret += generate_struct_fields(base_fields)
     else:
         assert not discriminator
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 4416677..3f82bd4 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -2,7 +2,7 @@
 # QAPI visitor generator
 #
 # Copyright IBM, Corp. 2011
-# Copyright (C) 2014 Red Hat, Inc.
+# Copyright (C) 2014-2015 Red Hat, Inc.
 #
 # Authors:
 #  Anthony Liguori <aligu...@us.ibm.com>
@@ -310,16 +310,15 @@ def generate_visit_union(expr):
         ret = ""
         disc_type = enum_define['enum_name']
     else:
-        # There will always be a discriminator in the C switch code, by 
default it
-        # is an enum type generated silently as "'%sKind' % (name)"
+        # There will always be a discriminator in the C switch code, by default
+        # it is an enum type generated silently as "'%sKind' % (name)"
         ret = generate_visit_enum('%sKind' % name, members.keys())
         disc_type = '%sKind' % (name)

     if base:
-        base_fields = find_struct(base)['data']
-        if discriminator:
-            base_fields = base_fields.copy()
-            del base_fields[discriminator]
+        assert discriminator
+        base_fields = find_struct(base)['data'].copy()
+        del base_fields[discriminator]
         ret += generate_visit_struct_fields(name, "", "", base_fields)

     if discriminator:
diff --git a/tests/qapi-schema/qapi-schema-test.json 
b/tests/qapi-schema/qapi-schema-test.json
index 84f0f07..b134f3f 100644
--- a/tests/qapi-schema/qapi-schema-test.json
+++ b/tests/qapi-schema/qapi-schema-test.json
@@ -36,10 +36,6 @@
 { 'type': 'UserDefC',
   'data': { 'string1': 'str', 'string2': 'str' } }

-{ 'union': 'UserDefUnion',
-  'base': 'UserDefZero',
-  'data': { 'a' : 'UserDefA', 'b' : 'UserDefB' } }
-
 { 'type': 'UserDefUnionBase',
   'data': { 'string': 'str', 'enum1': 'EnumOne' } }

diff --git a/tests/qapi-schema/qapi-schema-test.out 
b/tests/qapi-schema/qapi-schema-test.out
index 915a61b..664ae7b 100644
--- a/tests/qapi-schema/qapi-schema-test.out
+++ b/tests/qapi-schema/qapi-schema-test.out
@@ -7,7 +7,6 @@
  OrderedDict([('type', 'UserDefA'), ('data', OrderedDict([('boolean', 
'bool')]))]),
  OrderedDict([('type', 'UserDefB'), ('data', OrderedDict([('integer', 
'int')]))]),
  OrderedDict([('type', 'UserDefC'), ('data', OrderedDict([('string1', 'str'), 
('string2', 'str')]))]),
- OrderedDict([('union', 'UserDefUnion'), ('base', 'UserDefZero'), ('data', 
OrderedDict([('a', 'UserDefA'), ('b', 'UserDefB')]))]),
  OrderedDict([('type', 'UserDefUnionBase'), ('data', OrderedDict([('string', 
'str'), ('enum1', 'EnumOne')]))]),
  OrderedDict([('union', 'UserDefFlatUnion'), ('base', 'UserDefUnionBase'), 
('discriminator', 'enum1'), ('data', OrderedDict([('value1', 'UserDefA'), 
('value2', 'UserDefB'), ('value3', 'UserDefB')]))]),
  OrderedDict([('union', 'UserDefFlatUnion2'), ('base', 'UserDefUnionBase'), 
('discriminator', 'enum1'), ('data', OrderedDict([('value1', 'UserDefC'), 
('value2', 'UserDefB'), ('value3', 'UserDefA')]))]),
@@ -24,7 +23,6 @@
  OrderedDict([('event', 'EVENT_C'), ('data', OrderedDict([('*a', 'int'), 
('*b', 'UserDefOne'), ('c', 'str')]))]),
  OrderedDict([('event', 'EVENT_D'), ('data', OrderedDict([('a', 
'EventStructOne'), ('b', 'str'), ('*c', 'str'), ('*enum3', 'EnumOne')]))])]
 [{'enum_name': 'EnumOne', 'enum_values': ['value1', 'value2', 'value3']},
- {'enum_name': 'UserDefUnionKind', 'enum_values': None},
  {'enum_name': 'UserDefAnonUnionKind', 'enum_values': None},
  {'enum_name': 'UserDefNativeListUnionKind', 'enum_values': None}]
 [OrderedDict([('type', 'NestedEnumsOne'), ('data', OrderedDict([('enum1', 
'EnumOne'), ('*enum2', 'EnumOne'), ('enum3', 'EnumOne'), ('*enum4', 
'EnumOne')]))]),
diff --git a/tests/test-qmp-input-strict.c b/tests/test-qmp-input-strict.c
index d5360c6..53134a1 100644
--- a/tests/test-qmp-input-strict.c
+++ b/tests/test-qmp-input-strict.c
@@ -1,7 +1,7 @@
 /*
  * QMP Input Visitor unit-tests (strict mode).
  *
- * Copyright (C) 2011-2012 Red Hat Inc.
+ * Copyright (C) 2011-2012, 2015 Red Hat Inc.
  *
  * Authors:
  *  Luiz Capitulino <lcapitul...@redhat.com>
@@ -141,18 +141,18 @@ static void test_validate_list(TestInputVisitorData *data,
     qapi_free_UserDefOneList(head);
 }

-static void test_validate_union(TestInputVisitorData *data,
-                                 const void *unused)
+static void test_validate_union_native_list(TestInputVisitorData *data,
+                                            const void *unused)
 {
-    UserDefUnion *tmp = NULL;
+    UserDefNativeListUnion *tmp = NULL;
     Visitor *v;
     Error *err = NULL;

-    v = validate_test_init(data, "{ 'type': 'b', 'integer': 41, 'data' : { 
'integer': 42 } }");
+    v = validate_test_init(data, "{ 'type': 'integer', 'data' : [ 1, 2 ] }");

-    visit_type_UserDefUnion(v, &tmp, NULL, &err);
+    visit_type_UserDefNativeListUnion(v, &tmp, NULL, &err);
     g_assert(!err);
-    qapi_free_UserDefUnion(tmp);
+    qapi_free_UserDefNativeListUnion(tmp);
 }

 static void test_validate_union_flat(TestInputVisitorData *data,
@@ -232,18 +232,19 @@ static void test_validate_fail_list(TestInputVisitorData 
*data,
     qapi_free_UserDefOneList(head);
 }

-static void test_validate_fail_union(TestInputVisitorData *data,
-                                      const void *unused)
+static void test_validate_fail_union_native_list(TestInputVisitorData *data,
+                                                 const void *unused)
 {
-    UserDefUnion *tmp = NULL;
+    UserDefNativeListUnion *tmp = NULL;
     Error *err = NULL;
     Visitor *v;

-    v = validate_test_init(data, "{ 'type': 'b', 'data' : { 'integer': 42 } 
}");
+    v = validate_test_init(data,
+                           "{ 'type': 'integer', 'data' : [ \"string\" ] }");

-    visit_type_UserDefUnion(v, &tmp, NULL, &err);
+    visit_type_UserDefNativeListUnion(v, &tmp, NULL, &err);
     g_assert(err);
-    qapi_free_UserDefUnion(tmp);
+    qapi_free_UserDefNativeListUnion(tmp);
 }

 static void test_validate_fail_union_flat(TestInputVisitorData *data,
@@ -304,31 +305,31 @@ int main(int argc, char **argv)
     g_test_init(&argc, &argv, NULL);

     validate_test_add("/visitor/input-strict/pass/struct",
-                       &testdata, test_validate_struct);
+                      &testdata, test_validate_struct);
     validate_test_add("/visitor/input-strict/pass/struct-nested",
-                       &testdata, test_validate_struct_nested);
+                      &testdata, test_validate_struct_nested);
     validate_test_add("/visitor/input-strict/pass/list",
-                       &testdata, test_validate_list);
-    validate_test_add("/visitor/input-strict/pass/union",
-                       &testdata, test_validate_union);
+                      &testdata, test_validate_list);
     validate_test_add("/visitor/input-strict/pass/union-flat",
-                       &testdata, test_validate_union_flat);
+                      &testdata, test_validate_union_flat);
     validate_test_add("/visitor/input-strict/pass/union-anon",
-                       &testdata, test_validate_union_anon);
+                      &testdata, test_validate_union_anon);
+    validate_test_add("/visitor/input-strict/pass/union-native-list",
+                      &testdata, test_validate_union_native_list);
     validate_test_add("/visitor/input-strict/fail/struct",
-                       &testdata, test_validate_fail_struct);
+                      &testdata, test_validate_fail_struct);
     validate_test_add("/visitor/input-strict/fail/struct-nested",
-                       &testdata, test_validate_fail_struct_nested);
+                      &testdata, test_validate_fail_struct_nested);
     validate_test_add("/visitor/input-strict/fail/list",
-                       &testdata, test_validate_fail_list);
-    validate_test_add("/visitor/input-strict/fail/union",
-                       &testdata, test_validate_fail_union);
+                      &testdata, test_validate_fail_list);
     validate_test_add("/visitor/input-strict/fail/union-flat",
-                       &testdata, test_validate_fail_union_flat);
+                      &testdata, test_validate_fail_union_flat);
     validate_test_add("/visitor/input-strict/fail/union-flat-no-discriminator",
-                       &testdata, test_validate_fail_union_flat_no_discrim);
+                      &testdata, test_validate_fail_union_flat_no_discrim);
     validate_test_add("/visitor/input-strict/fail/union-anon",
-                       &testdata, test_validate_fail_union_anon);
+                      &testdata, test_validate_fail_union_anon);
+    validate_test_add("/visitor/input-strict/fail/union-native-list",
+                      &testdata, test_validate_fail_union_native_list);

     g_test_run();

diff --git a/tests/test-qmp-input-visitor.c b/tests/test-qmp-input-visitor.c
index 1c8e872..cc33f64 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 Red Hat Inc.
+ * Copyright (C) 2011, 2015 Red Hat Inc.
  *
  * Authors:
  *  Luiz Capitulino <lcapitul...@redhat.com>
@@ -293,23 +293,6 @@ static void test_visitor_in_list(TestInputVisitorData 
*data,
     qapi_free_UserDefOneList(head);
 }

-static void test_visitor_in_union(TestInputVisitorData *data,
-                                  const void *unused)
-{
-    Visitor *v;
-    Error *err = NULL;
-    UserDefUnion *tmp;
-
-    v = visitor_input_test_init(data, "{ 'type': 'b', 'integer': 41, 'data' : 
{ 'integer': 42 } }");
-
-    visit_type_UserDefUnion(v, &tmp, NULL, &err);
-    g_assert(err == NULL);
-    g_assert_cmpint(tmp->kind, ==, USER_DEF_UNION_KIND_B);
-    g_assert_cmpint(tmp->integer, ==, 41);
-    g_assert_cmpint(tmp->b->integer, ==, 42);
-    qapi_free_UserDefUnion(tmp);
-}
-
 static void test_visitor_in_union_flat(TestInputVisitorData *data,
                                        const void *unused)
 {
@@ -670,55 +653,56 @@ int main(int argc, char **argv)
     input_visitor_test_add("/visitor/input/number",
                            &in_visitor_data, test_visitor_in_number);
     input_visitor_test_add("/visitor/input/string",
-                            &in_visitor_data, test_visitor_in_string);
+                           &in_visitor_data, test_visitor_in_string);
     input_visitor_test_add("/visitor/input/enum",
-                            &in_visitor_data, test_visitor_in_enum);
+                           &in_visitor_data, test_visitor_in_enum);
     input_visitor_test_add("/visitor/input/struct",
-                            &in_visitor_data, test_visitor_in_struct);
+                           &in_visitor_data, test_visitor_in_struct);
     input_visitor_test_add("/visitor/input/struct-nested",
-                            &in_visitor_data, test_visitor_in_struct_nested);
+                           &in_visitor_data, test_visitor_in_struct_nested);
     input_visitor_test_add("/visitor/input/list",
-                            &in_visitor_data, test_visitor_in_list);
-    input_visitor_test_add("/visitor/input/union",
-                            &in_visitor_data, test_visitor_in_union);
+                           &in_visitor_data, test_visitor_in_list);
     input_visitor_test_add("/visitor/input/union-flat",
-                            &in_visitor_data, test_visitor_in_union_flat);
+                           &in_visitor_data, test_visitor_in_union_flat);
     input_visitor_test_add("/visitor/input/union-anon",
-                            &in_visitor_data, test_visitor_in_union_anon);
+                           &in_visitor_data, test_visitor_in_union_anon);
     input_visitor_test_add("/visitor/input/errors",
-                            &in_visitor_data, test_visitor_in_errors);
+                           &in_visitor_data, test_visitor_in_errors);
     input_visitor_test_add("/visitor/input/native_list/int",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_int);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_int);
     input_visitor_test_add("/visitor/input/native_list/int8",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_int8);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_int8);
     input_visitor_test_add("/visitor/input/native_list/int16",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_int16);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_int16);
     input_visitor_test_add("/visitor/input/native_list/int32",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_int32);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_int32);
     input_visitor_test_add("/visitor/input/native_list/int64",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_int64);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_int64);
     input_visitor_test_add("/visitor/input/native_list/uint8",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_uint8);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_uint8);
     input_visitor_test_add("/visitor/input/native_list/uint16",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_uint16);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_uint16);
     input_visitor_test_add("/visitor/input/native_list/uint32",
-                            &in_visitor_data,
-                            test_visitor_in_native_list_uint32);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_uint32);
     input_visitor_test_add("/visitor/input/native_list/uint64",
-                            &in_visitor_data, 
test_visitor_in_native_list_uint64);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_uint64);
     input_visitor_test_add("/visitor/input/native_list/bool",
-                            &in_visitor_data, 
test_visitor_in_native_list_bool);
+                           &in_visitor_data, test_visitor_in_native_list_bool);
     input_visitor_test_add("/visitor/input/native_list/str",
-                            &in_visitor_data, 
test_visitor_in_native_list_string);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_string);
     input_visitor_test_add("/visitor/input/native_list/number",
-                            &in_visitor_data, 
test_visitor_in_native_list_number);
+                           &in_visitor_data,
+                           test_visitor_in_native_list_number);

     g_test_run();

diff --git a/tests/test-qmp-output-visitor.c b/tests/test-qmp-output-visitor.c
index 74020de..ebe6ea3 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 Red Hat Inc.
+ * Copyright (C) 2011, 2015 Red Hat Inc.
  *
  * Authors:
  *  Luiz Capitulino <lcapitul...@redhat.com>
@@ -422,40 +422,6 @@ static void 
test_visitor_out_list_qapi_free(TestOutputVisitorData *data,
     qapi_free_UserDefNestedList(head);
 }

-static void test_visitor_out_union(TestOutputVisitorData *data,
-                                   const void *unused)
-{
-    QObject *arg, *qvalue;
-    QDict *qdict, *value;
-
-    Error *err = NULL;
-
-    UserDefUnion *tmp = g_malloc0(sizeof(UserDefUnion));
-    tmp->kind = USER_DEF_UNION_KIND_A;
-    tmp->integer = 41;
-    tmp->a = g_malloc0(sizeof(UserDefA));
-    tmp->a->boolean = true;
-
-    visit_type_UserDefUnion(data->ov, &tmp, NULL, &err);
-    g_assert(err == NULL);
-    arg = qmp_output_get_qobject(data->qov);
-
-    g_assert(qobject_type(arg) == QTYPE_QDICT);
-    qdict = qobject_to_qdict(arg);
-
-    g_assert_cmpstr(qdict_get_str(qdict, "type"), ==, "a");
-    g_assert_cmpint(qdict_get_int(qdict, "integer"), ==, 41);
-
-    qvalue = qdict_get(qdict, "data");
-    g_assert(data != NULL);
-    g_assert(qobject_type(qvalue) == QTYPE_QDICT);
-    value = qobject_to_qdict(qvalue);
-    g_assert_cmpint(qdict_get_bool(value, "boolean"), ==, true);
-
-    qapi_free_UserDefUnion(tmp);
-    QDECREF(qdict);
-}
-
 static void test_visitor_out_union_flat(TestOutputVisitorData *data,
                                         const void *unused)
 {
@@ -862,8 +828,6 @@ int main(int argc, char **argv)
                             &out_visitor_data, test_visitor_out_list);
     output_visitor_test_add("/visitor/output/list-qapi-free",
                             &out_visitor_data, 
test_visitor_out_list_qapi_free);
-    output_visitor_test_add("/visitor/output/union",
-                            &out_visitor_data, test_visitor_out_union);
     output_visitor_test_add("/visitor/output/union-flat",
                             &out_visitor_data, test_visitor_out_union_flat);
     output_visitor_test_add("/visitor/output/union-anon",
@@ -871,29 +835,41 @@ int main(int argc, char **argv)
     output_visitor_test_add("/visitor/output/empty",
                             &out_visitor_data, test_visitor_out_empty);
     output_visitor_test_add("/visitor/output/native_list/int",
-                            &out_visitor_data, 
test_visitor_out_native_list_int);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_int);
     output_visitor_test_add("/visitor/output/native_list/int8",
-                            &out_visitor_data, 
test_visitor_out_native_list_int8);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_int8);
     output_visitor_test_add("/visitor/output/native_list/int16",
-                            &out_visitor_data, 
test_visitor_out_native_list_int16);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_int16);
     output_visitor_test_add("/visitor/output/native_list/int32",
-                            &out_visitor_data, 
test_visitor_out_native_list_int32);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_int32);
     output_visitor_test_add("/visitor/output/native_list/int64",
-                            &out_visitor_data, 
test_visitor_out_native_list_int64);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_int64);
     output_visitor_test_add("/visitor/output/native_list/uint8",
-                            &out_visitor_data, 
test_visitor_out_native_list_uint8);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_uint8);
     output_visitor_test_add("/visitor/output/native_list/uint16",
-                            &out_visitor_data, 
test_visitor_out_native_list_uint16);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_uint16);
     output_visitor_test_add("/visitor/output/native_list/uint32",
-                            &out_visitor_data, 
test_visitor_out_native_list_uint32);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_uint32);
     output_visitor_test_add("/visitor/output/native_list/uint64",
-                            &out_visitor_data, 
test_visitor_out_native_list_uint64);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_uint64);
     output_visitor_test_add("/visitor/output/native_list/bool",
-                            &out_visitor_data, 
test_visitor_out_native_list_bool);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_bool);
     output_visitor_test_add("/visitor/output/native_list/string",
-                            &out_visitor_data, 
test_visitor_out_native_list_str);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_str);
     output_visitor_test_add("/visitor/output/native_list/number",
-                            &out_visitor_data, 
test_visitor_out_native_list_number);
+                            &out_visitor_data,
+                            test_visitor_out_native_list_number);

     g_test_run();

-- 
2.1.0


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