From: Markus Armbruster <armbru@redhat.com>
Date: Thu, 10 Dec 2020 16:14:47 +0000 (+0100)
Subject: tests/check-qnum: Cover qnum_to_string() for "unround" argument
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1a9076919f5367309ee8d89b91aae5330dec37d6;p=qemu.git

tests/check-qnum: Cover qnum_to_string() for "unround" argument

qnum_to_string() has a FIXME comment about rounding errors due to
insufficient precision.  Cover it: 2.718281828459045 gets converted to
"2.718282".  The next commit will fix it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201210161452.2813491-6-armbru@redhat.com>
---

diff --git a/tests/check-qnum.c b/tests/check-qnum.c
index 4105015872..a73809d021 100644
--- a/tests/check-qnum.c
+++ b/tests/check-qnum.c
@@ -150,6 +150,12 @@ static void qnum_to_string_test(void)
     g_assert_cmpstr(tmp, ==, "0.42");
     g_free(tmp);
     qobject_unref(qn);
+
+    qn = qnum_from_double(2.718281828459045);
+    tmp = qnum_to_string(qn);
+    g_assert_cmpstr(tmp, ==, "2.718282"); /* BUG */
+    g_free(tmp);
+    qobject_unref(qn);
 }
 
 int main(int argc, char **argv)