Cover the \n in flex (#3461)

src/common/time/parser/datetime_scanner.lex

@@ -59,7 +59,7 @@ R_BRACKET                   "]"
                           return TokenType::TIME_ZONE_NAME;
                         }
 
-.                       {
+\n|.                    {
                           /**
                             * Any other unmatched byte sequences will get us here,
                             * including the non-ascii ones, which are negative

src/common/time/parser/test/DateTimeParserTest.cpp

@@ -83,6 +83,16 @@ TEST(DatetimeReader, DateTimeFailed) {
     auto result = parser.readDatetime("2019-01-03T22:22:3.2333x");
     EXPECT_FALSE(result.ok()) << result.value();
   }
+  {
+    auto parser = time::DatetimeReader::makeDateTimeReader();
+    auto result = parser.readDatetime("2019-01-03T22:22:3.2333\n");
+    EXPECT_FALSE(result.ok()) << result.value();
+  }
+  {
+    auto parser = time::DatetimeReader::makeDateTimeReader();
+    auto result = parser.readDatetime("\t2019-01-03T22:22:3.2333");
+    EXPECT_FALSE(result.ok()) << result.value();
+  }
   // not ending delimiter
   {
     auto parser = time::DatetimeReader::makeDateTimeReader();
@@ -150,6 +160,16 @@ TEST(DatetimeReader, DateFailed) {
     auto result = parser.readDate("2019-01-03*");
     EXPECT_FALSE(result.ok()) << result.value();
   }
+  {
+    auto parser = time::DatetimeReader::makeDateReader();
+    auto result = parser.readDate("2019-01-03\n");
+    EXPECT_FALSE(result.ok()) << result.value();
+  }
+  {
+    auto parser = time::DatetimeReader::makeDateReader();
+    auto result = parser.readDate("\t2019-01-03");
+    EXPECT_FALSE(result.ok()) << result.value();
+  }
   // extra components
   {
     auto parser = time::DatetimeReader::makeDateReader();
@@ -227,6 +247,16 @@ TEST(DatetimeReader, TimeFailed) {
     auto result = parser.readTime("22:22:3.2333x");
     EXPECT_FALSE(result.ok()) << result.value();
   }
+  {
+    auto parser = time::DatetimeReader::makeTimeReader();
+    auto result = parser.readTime("22:22:3.2333\n");
+    EXPECT_FALSE(result.ok()) << result.value();
+  }
+  {
+    auto parser = time::DatetimeReader::makeTimeReader();
+    auto result = parser.readTime("\t22:22:3.2333\n");
+    EXPECT_FALSE(result.ok()) << result.value();
+  }
   // extra components
   {
     auto parser = time::DatetimeReader::makeTimeReader();