tests: parser: Add test cases for too long cases

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>

Author: cosmo0920

tests/internal/parser.c

@@ -9,6 +9,9 @@
 
 #include <time.h>
 #include <string.h>
+#include <math.h>
+#include <float.h>
+#include <limits.h>
 #include "flb_tests_internal.h"
 
 /* Parsers configuration */
@@ -588,13 +591,73 @@ void test_parser_time_system_timezone_midnight()
     flb_config_exit(config);
 }
 
+void test_parser_time_lookup_long_fraction()
+{
+    int ret;
+    double ns;
+    time_t epoch;
+    struct flb_tm tm;
+    struct flb_parser *parser;
+    struct flb_config *config;
+    const char *time_string = "10/03/2016 12:21:08.123456789123456789123456789123456789123456789123456789";
+
+    config = flb_config_init();
+    load_json_parsers(config);
+
+    parser = flb_parser_get("generic_N", config);
+    TEST_CHECK(parser != NULL);
+    if (parser == NULL) {
+        flb_parser_exit(config);
+        flb_config_exit(config);
+        return;
+    }
+
+    ret = flb_parser_time_lookup(time_string, strlen(time_string), 0, parser, &tm, &ns);
+    TEST_CHECK(ret == 0);
+
+    epoch = flb_parser_tm2time(&tm, FLB_FALSE);
+    TEST_CHECK(epoch == 1475497268);
+    TEST_CHECK(fabs(ns - 0.123456789) <= DBL_EPSILON);
+
+    flb_parser_exit(config);
+    flb_config_exit(config);
+}
+
+void test_parser_time_lookup_reject_oversized_length()
+{
+    int ret;
+    double ns;
+    struct flb_tm tm;
+    struct flb_parser *parser;
+    struct flb_config *config;
+
+    config = flb_config_init();
+    load_json_parsers(config);
+
+    parser = flb_parser_get("generic_N", config);
+    TEST_CHECK(parser != NULL);
+    if (parser == NULL) {
+        flb_parser_exit(config);
+        flb_config_exit(config);
+        return;
+    }
+
+    ret = flb_parser_time_lookup("x", (size_t) INT_MAX + 1, 0, parser, &tm, &ns);
+    TEST_CHECK(ret == -1);
+
+    flb_parser_exit(config);
+    flb_config_exit(config);
+}
+
 
 TEST_LIST = {
     { "tzone_offset", test_parser_tzone_offset},
     { "time_lookup", test_parser_time_lookup},
     { "json_time_lookup", test_json_parser_time_lookup},
     { "regex_time_lookup", test_regex_parser_time_lookup},
     { "time_system_timezone_midnight", test_parser_time_system_timezone_midnight},
+    { "time_lookup_long_fraction", test_parser_time_lookup_long_fraction},
+    { "time_lookup_reject_oversized_length", test_parser_time_lookup_reject_oversized_length},
     { "mysql_unquoted" , test_mysql_unquoted },
     { 0 }
 };