[Qemu-devel] [PATCH v11 02/11] tests/cutils: Add test for qemu_strtotime_ps()

[Tao Xu <tao3.xu@intel.com>]

Test the input of basic, time suffixes, float, invaild, trailing and
overflow.

Signed-off-by: Tao Xu <tao3.xu@intel.com>
---

No changes in v11.

New patch in v10.
---
 tests/test-cutils.c | 199 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 199 insertions(+)

diff --git a/tests/test-cutils.c b/tests/test-cutils.c
index 1aa8351520..19c967d3d5 100644
--- a/tests/test-cutils.c
+++ b/tests/test-cutils.c
@@ -2179,6 +2179,193 @@ static void test_qemu_strtosz_metric(void)
     g_assert(endptr == str + 6);
 }
 
+static void test_qemu_strtotime_ps_simple(void)
+{
+    const char *str;
+    const char *endptr;
+    int err;
+    uint64_t res = 0xbaadf00d;
+
+    str = "0";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0);
+    g_assert(endptr == str + 1);
+
+    str = "56789";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 56789);
+    g_assert(endptr == str + 5);
+
+    err = qemu_strtotime_ps(str, NULL, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 56789);
+
+    /* Note: precision is 53 bits since we're parsing with strtod() */
+
+    str = "9007199254740991"; /* 2^53-1 */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0x1fffffffffffff);
+    g_assert(endptr == str + 16);
+
+    str = "9007199254740992"; /* 2^53 */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0x20000000000000);
+    g_assert(endptr == str + 16);
+
+    str = "9007199254740993"; /* 2^53+1 */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0x20000000000000); /* rounded to 53 bits */
+    g_assert(endptr == str + 16);
+
+    str = "18446744073709549568"; /* 0xfffffffffffff800 (53 msbs set) */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0xfffffffffffff800);
+    g_assert(endptr == str + 20);
+
+    str = "18446744073709550591"; /* 0xfffffffffffffbff */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0xfffffffffffff800); /* rounded to 53 bits */
+    g_assert(endptr == str + 20);
+
+    /* 0x7ffffffffffffe00..0x7fffffffffffffff get rounded to
+     * 0x8000000000000000, thus -ERANGE; see test_qemu_strtosz_erange() */
+}
+
+static void test_qemu_strtotime_ps_units(void)
+{
+    const char *ps = "1ps";
+    const char *ns = "1ns";
+    const char *us = "1us";
+    const char *ms = "1ms";
+    const char *s = "1s";
+    int err;
+    const char *endptr;
+    uint64_t res = 0xbaadf00d;
+
+    err = qemu_strtotime_ps(ps, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 1);
+    g_assert(endptr == ps + 3);
+
+    err = qemu_strtotime_ps(ns, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 1000);
+    g_assert(endptr == ns + 3);
+
+    err = qemu_strtotime_ps(us, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 1000000);
+    g_assert(endptr == us + 3);
+
+    err = qemu_strtotime_ps(ms, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 1000000000LL);
+    g_assert(endptr == ms + 3);
+
+    err = qemu_strtotime_ps(s, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 1000000000000ULL);
+    g_assert(endptr == s + 2);
+}
+
+static void test_qemu_strtotime_ps_float(void)
+{
+    const char *str = "56.789ns";
+    int err;
+    const char *endptr;
+    uint64_t res = 0xbaadf00d;
+
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 56.789 * 1000);
+    g_assert(endptr == str + 8);
+}
+
+static void test_qemu_strtotime_ps_invalid(void)
+{
+    const char *str;
+    const char *endptr;
+    int err;
+    uint64_t res = 0xbaadf00d;
+
+    str = "";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == str);
+
+    str = " \t ";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == str);
+
+    str = "crap";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == str);
+
+    str = "inf";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == str);
+
+    str = "NaN";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == str);
+}
+
+static void test_qemu_strtotime_ps_trailing(void)
+{
+    const char *str;
+    int err;
+    uint64_t res = 0xbaadf00d;
+
+    str = "123xxx";
+
+    err = qemu_strtotime_ps(str, NULL, &res);
+    g_assert_cmpint(err, ==, -EINVAL);
+}
+
+static void test_qemu_strtotime_ps_erange(void)
+{
+    const char *str;
+    const char *endptr;
+    int err;
+    uint64_t res = 0xbaadf00d;
+
+    str = "-1";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert(endptr == str + 2);
+
+    str = "18446744073709550592"; /* 0xfffffffffffffc00 */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert(endptr == str + 20);
+
+    str = "18446744073709551615"; /* 2^64-1 */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert(endptr == str + 20);
+
+    str = "18446744073709551616"; /* 2^64 */
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert(endptr == str + 20);
+
+    str = "200000000000000s";
+    err = qemu_strtotime_ps(str, &endptr, &res);
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert(endptr == str + 16);
+}
+
 int main(int argc, char **argv)
 {
     g_test_init(&argc, &argv, NULL);
@@ -2456,5 +2643,17 @@ int main(int argc, char **argv)
     g_test_add_func("/cutils/strtosz/metric",
                     test_qemu_strtosz_metric);
 
+    g_test_add_func("/cutils/strtotime/simple",
+                    test_qemu_strtotime_ps_simple);
+    g_test_add_func("/cutils/strtotime/units",
+                    test_qemu_strtotime_ps_units);
+    g_test_add_func("/cutils/strtotime/float",
+                    test_qemu_strtotime_ps_float);
+    g_test_add_func("/cutils/strtotime/invalid",
+                    test_qemu_strtotime_ps_invalid);
+    g_test_add_func("/cutils/strtotime/trailing",
+                    test_qemu_strtotime_ps_trailing);
+    g_test_add_func("/cutils/strtotime/erange",
+                    test_qemu_strtotime_ps_erange);
     return g_test_run();
 }
-- 
2.20.1