cutils: Add qemu_strtol() wrapper

Add wrapper for strtol() function. Include unit tests.

Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <07199f1c0ff3892790c6322123aee1e92f580550.1437346779.git.carlos.torres@rackspace.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 319 insertions, 0 deletions

diff --git a/tests/test-cutils.c b/tests/test-cutils.c
index 2a4556d..9219df0 100644
--- a/tests/test-cutils.c
+++ b/tests/test-cutils.c
@@ -226,6 +226,296 @@ static void test_parse_uint_full_correct(void)
     g_assert_cmpint(i, ==, 123);
 }
 
+static void test_qemu_strtol_correct(void)
+{
+    const char *str = "12345 foo";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 12345);
+    g_assert(endptr == str + 5);
+}
+
+static void test_qemu_strtol_null(void)
+{
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(NULL, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == NULL);
+}
+
+static void test_qemu_strtol_empty(void)
+{
+    const char *str = "";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0);
+    g_assert(endptr == str);
+}
+
+static void test_qemu_strtol_whitespace(void)
+{
+    const char *str = "  \t  ";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0);
+    g_assert(endptr == str);
+}
+
+static void test_qemu_strtol_invalid(void)
+{
+    const char *str = "   xxxx  \t abc";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0);
+    g_assert(endptr == str);
+}
+
+static void test_qemu_strtol_trailing(void)
+{
+    const char *str = "123xxx";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 123);
+    g_assert(endptr == str + 3);
+}
+
+static void test_qemu_strtol_octal(void)
+{
+    const char *str = "0123";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 8, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0123);
+    g_assert(endptr == str + strlen(str));
+
+    res = 999;
+    endptr = &f;
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0123);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_decimal(void)
+{
+    const char *str = "0123";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 10, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 123);
+    g_assert(endptr == str + strlen(str));
+
+    str = "123";
+    res = 999;
+    endptr = &f;
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 123);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_hex(void)
+{
+    const char *str = "0123";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 16, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0x123);
+    g_assert(endptr == str + strlen(str));
+
+    str = "0x123";
+    res = 999;
+    endptr = &f;
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0x123);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_max(void)
+{
+    const char *str = g_strdup_printf("%ld", LONG_MAX);
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, LONG_MAX);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_overflow(void)
+{
+    const char *str = "99999999999999999999999999999999999999999999";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert_cmpint(res, ==, LONG_MAX);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_underflow(void)
+{
+    const char *str = "-99999999999999999999999999999999999999999999";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err  = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, -ERANGE);
+    g_assert_cmpint(res, ==, LONG_MIN);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_negative(void)
+{
+    const char *str = "  \t -321";
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, -321);
+    g_assert(endptr == str + strlen(str));
+}
+
+static void test_qemu_strtol_full_correct(void)
+{
+    const char *str = "123";
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, NULL, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 123);
+}
+
+static void test_qemu_strtol_full_null(void)
+{
+    char f = 'X';
+    const char *endptr = &f;
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(NULL, &endptr, 0, &res);
+
+    g_assert_cmpint(err, ==, -EINVAL);
+    g_assert(endptr == NULL);
+}
+
+static void test_qemu_strtol_full_empty(void)
+{
+    const char *str = "";
+    long res = 999L;
+    int err;
+
+    err =  qemu_strtol(str, NULL, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, 0);
+}
+
+static void test_qemu_strtol_full_negative(void)
+{
+    const char *str = " \t -321";
+    long res = 999;
+    int err;
+
+    err = qemu_strtol(str, NULL, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, -321);
+}
+
+static void test_qemu_strtol_full_trailing(void)
+{
+    const char *str = "123xxx";
+    long res;
+    int err;
+
+    err = qemu_strtol(str, NULL, 0, &res);
+
+    g_assert_cmpint(err, ==, -EINVAL);
+}
+
+static void test_qemu_strtol_full_max(void)
+{
+    const char *str = g_strdup_printf("%ld", LONG_MAX);
+    long res;
+    int err;
+
+    err = qemu_strtol(str, NULL, 0, &res);
+
+    g_assert_cmpint(err, ==, 0);
+    g_assert_cmpint(res, ==, LONG_MAX);
+}
 int main(int argc, char **argv)
 {
     g_test_init(&argc, &argv, NULL);
@@ -247,5 +537,34 @@ int main(int argc, char **argv)
     g_test_add_func("/cutils/parse_uint_full/correct",
                     test_parse_uint_full_correct);
 
+    /* qemu_strtol() tests */
+    g_test_add_func("/cutils/qemu_strtol/correct", test_qemu_strtol_correct);
+    g_test_add_func("/cutils/qemu_strtol/null", test_qemu_strtol_null);
+    g_test_add_func("/cutils/qemu_strtol/empty", test_qemu_strtol_empty);
+    g_test_add_func("/cutils/qemu_strtol/whitespace",
+                    test_qemu_strtol_whitespace);
+    g_test_add_func("/cutils/qemu_strtol/invalid", test_qemu_strtol_invalid);
+    g_test_add_func("/cutils/qemu_strtol/trailing", test_qemu_strtol_trailing);
+    g_test_add_func("/cutils/qemu_strtol/octal", test_qemu_strtol_octal);
+    g_test_add_func("/cutils/qemu_strtol/decimal", test_qemu_strtol_decimal);
+    g_test_add_func("/cutils/qemu_strtol/hex", test_qemu_strtol_hex);
+    g_test_add_func("/cutils/qemu_strtol/max", test_qemu_strtol_max);
+    g_test_add_func("/cutils/qemu_strtol/overflow", test_qemu_strtol_overflow);
+    g_test_add_func("/cutils/qemu_strtol/underflow",
+                    test_qemu_strtol_underflow);
+    g_test_add_func("/cutils/qemu_strtol/negative", test_qemu_strtol_negative);
+    g_test_add_func("/cutils/qemu_strtol_full/correct",
+                    test_qemu_strtol_full_correct);
+    g_test_add_func("/cutils/qemu_strtol_full/null",
+                    test_qemu_strtol_full_null);
+    g_test_add_func("/cutils/qemu_strtol_full/empty",
+                    test_qemu_strtol_full_empty);
+    g_test_add_func("/cutils/qemu_strtol_full/negative",
+                    test_qemu_strtol_full_negative);
+    g_test_add_func("/cutils/qemu_strtol_full/trailing",
+                    test_qemu_strtol_full_trailing);
+    g_test_add_func("/cutils/qemu_strtol_full/max",
+                    test_qemu_strtol_full_max);
+
     return g_test_run();
 }