qapi: merge QInt and QFloat in QNum

We would like to use a same QObject type to represent numbers, whether
they are int, uint, or floats. Getters will allow some compatibility
between the various types if the number fits other representations.

Add a few more tests while at it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170607163635.17635-7-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[parse_stats_intervals() simplified a bit, comment in
test_visitor_in_int_overflow() tidied up, suppress bogus warnings]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 136 insertions, 0 deletions

diff --git a/tests/check-qnum.c b/tests/check-qnum.c
new file mode 100644
index 0000000000..d94cea024b
--- /dev/null
+++ b/tests/check-qnum.c
@@ -0,0 +1,136 @@
+/*
+ * QNum unit-tests.
+ *
+ * Copyright (C) 2009 Red Hat Inc.
+ * Copyright IBM, Corp. 2009
+ *
+ * Authors:
+ *  Luiz Capitulino <lcapitulino@redhat.com>
+ *  Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+
+#include "qapi/qmp/qnum.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+
+/*
+ * Public Interface test-cases
+ *
+ * (with some violations to access 'private' data)
+ */
+
+static void qnum_from_int_test(void)
+{
+    QNum *qn;
+    const int value = -42;
+
+    qn = qnum_from_int(value);
+    g_assert(qn != NULL);
+    g_assert_cmpint(qn->kind, ==, QNUM_I64);
+    g_assert_cmpint(qn->u.i64, ==, value);
+    g_assert_cmpint(qn->base.refcnt, ==, 1);
+    g_assert_cmpint(qobject_type(QOBJECT(qn)), ==, QTYPE_QNUM);
+
+    // destroy doesn't exit yet
+    g_free(qn);
+}
+
+static void qnum_from_double_test(void)
+{
+    QNum *qn;
+    const double value = -42.23423;
+
+    qn = qnum_from_double(value);
+    g_assert(qn != NULL);
+    g_assert_cmpint(qn->kind, ==, QNUM_DOUBLE);
+    g_assert_cmpfloat(qn->u.dbl, ==, value);
+    g_assert_cmpint(qn->base.refcnt, ==, 1);
+    g_assert_cmpint(qobject_type(QOBJECT(qn)), ==, QTYPE_QNUM);
+
+    // destroy doesn't exit yet
+    g_free(qn);
+}
+
+static void qnum_from_int64_test(void)
+{
+    QNum *qn;
+    const int64_t value = 0x1234567890abcdefLL;
+
+    qn = qnum_from_int(value);
+    g_assert_cmpint((int64_t) qn->u.i64, ==, value);
+
+    QDECREF(qn);
+}
+
+static void qnum_get_int_test(void)
+{
+    QNum *qn;
+    const int value = 123456;
+
+    qn = qnum_from_int(value);
+    g_assert_cmpint(qnum_get_int(qn), ==, value);
+
+    QDECREF(qn);
+}
+
+static void qobject_to_qnum_test(void)
+{
+    QNum *qn;
+
+    qn = qnum_from_int(0);
+    g_assert(qobject_to_qnum(QOBJECT(qn)) == qn);
+    QDECREF(qn);
+
+    qn = qnum_from_double(0);
+    g_assert(qobject_to_qnum(QOBJECT(qn)) == qn);
+    QDECREF(qn);
+}
+
+static void qnum_to_string_test(void)
+{
+    QNum *qn;
+    char *tmp;
+
+    qn = qnum_from_int(123456);
+    tmp = qnum_to_string(qn);
+    g_assert_cmpstr(tmp, ==, "123456");
+    g_free(tmp);
+    QDECREF(qn);
+
+    qn = qnum_from_double(0.42);
+    tmp = qnum_to_string(qn);
+    g_assert_cmpstr(tmp, ==, "0.42");
+    g_free(tmp);
+    QDECREF(qn);
+}
+
+static void qnum_destroy_test(void)
+{
+    QNum *qn;
+
+    qn = qnum_from_int(0);
+    QDECREF(qn);
+
+    qn = qnum_from_double(0.42);
+    QDECREF(qn);
+}
+
+int main(int argc, char **argv)
+{
+    g_test_init(&argc, &argv, NULL);
+
+    g_test_add_func("/qnum/from_int", qnum_from_int_test);
+    g_test_add_func("/qnum/from_double", qnum_from_double_test);
+    g_test_add_func("/qnum/destroy", qnum_destroy_test);
+    g_test_add_func("/qnum/from_int64", qnum_from_int64_test);
+    g_test_add_func("/qnum/get_int", qnum_get_int_test);
+    g_test_add_func("/qnum/to_qnum", qobject_to_qnum_test);
+    g_test_add_func("/qnum/to_string", qnum_to_string_test);
+
+    return g_test_run();
+}