Update README.md and add more DateRange tests

Author: bjoern-hempel

README.md

@@ -148,15 +148,15 @@ $dateParser = (new DateParser('<2023-07-01', 'America/New_York'))->formatTo('Y-m
 
 ### Class `DateParser`
 
-| method                               | description                                            | type                      |
-|--------------------------------------|--------------------------------------------------------|---------------------------|
-| <nobr>`->formatFrom($format)`</nobr> | Returns the formatted "from" date.                     | `string`                  |
-| <nobr>`->formatTo($format)`</nobr>   | Returns the formatted "to" date.                       | `string`                  |
-| <nobr>`->getDateRange()`</nobr>      | Returns the range as `DateRange` class.                | `DateRange`               |
-| <nobr>`->getFrom()`</nobr>           | Returns the "from" date as `DateTime` object.          | `DateTime\|null`          |
-| <nobr>`->getTo()`</nobr>             | Returns the "to" date as `DateTime` object.            | `DateTime\|null`          |
-| <nobr>`->getFromImmutable()`</nobr>  | Returns the "from" date as `DateTimeImmutable` object. | `DateTimeImmutable\|null` |
-| <nobr>`->getToImmutable()`</nobr>    | Returns the "to" date as `DateTimeImmutable` object.   | `DateTimeImmutable\|null` |
+| method                                                                        | description                                            | type                      |
+|-------------------------------------------------------------------------------|--------------------------------------------------------|---------------------------|
+| <nobr>`->formatFrom(string $format, DateTimeZone $dateTimeZoneOutput)`</nobr> | Returns the formatted "from" date.                     | `string`                  |
+| <nobr>`->formatTo(string $format, DateTimeZone $dateTimeZoneOutput)`</nobr>   | Returns the formatted "to" date.                       | `string`                  |
+| <nobr>`->getDateRange()`</nobr>                                               | Returns the range as `DateRange` class.                | `DateRange`               |
+| <nobr>`->getFrom(DateTimeZone $dateTimeZoneOutput)`</nobr>                    | Returns the "from" date as `DateTime` object.          | `DateTime\|null`          |
+| <nobr>`->getTo(DateTimeZone $dateTimeZoneOutput)`</nobr>                      | Returns the "to" date as `DateTime` object.            | `DateTime\|null`          |
+| <nobr>`->getFromImmutable(DateTimeZone $dateTimeZoneOutput)`</nobr>           | Returns the "from" date as `DateTimeImmutable` object. | `DateTimeImmutable\|null` |
+| <nobr>`->getToImmutable(DateTimeZone $dateTimeZoneOutput)`</nobr>             | Returns the "to" date as `DateTimeImmutable` object.   | `DateTimeImmutable\|null` |
 
 ## Development
 

src/DateParser.php

@@ -19,6 +19,7 @@
 use Ixnode\PhpDateParser\Base\BaseDateParser;
 use Ixnode\PhpDateParser\Constants\Timezones;
 use Ixnode\PhpDateParser\Tests\Unit\DateParserTest;
+use Ixnode\PhpException\Case\CaseUnsupportedException;
 
 /**
  * Class DateParser
@@ -46,6 +47,7 @@ public function getDateRange(): DateRange
      * @param string $format
      * @param DateTimeZone $dateTimeZoneOutput
      * @return string|null
+     * @throws CaseUnsupportedException
      */
     public function formatFrom(string $format, DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezones::UTC)): string|null
     {
@@ -58,6 +60,7 @@ public function formatFrom(string $format, DateTimeZone $dateTimeZoneOutput = ne
      * @param string $format
      * @param DateTimeZone $dateTimeZoneOutput
      * @return string|null
+     * @throws CaseUnsupportedException
      */
     public function formatTo(string $format, DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezones::UTC)): string|null
     {
@@ -69,6 +72,7 @@ public function formatTo(string $format, DateTimeZone $dateTimeZoneOutput = new
      *
      * @param DateTimeZone $dateTimeZoneOutput
      * @return DateTime|null
+     * @throws CaseUnsupportedException
      */
     public function getFrom(DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezones::UTC)): DateTime|null
     {
@@ -80,6 +84,7 @@ public function getFrom(DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Time
      *
      * @param DateTimeZone $dateTimeZoneOutput
      * @return DateTime|null
+     * @throws CaseUnsupportedException
      */
     public function getTo(DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezones::UTC)): DateTime|null
     {
@@ -91,6 +96,7 @@ public function getTo(DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezo
      *
      * @param DateTimeZone $dateTimeZoneOutput
      * @return DateTimeImmutable|null
+     * @throws CaseUnsupportedException
      */
     public function getFromImmutable(DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezones::UTC)): DateTimeImmutable|null
     {
@@ -102,6 +108,7 @@ public function getFromImmutable(DateTimeZone $dateTimeZoneOutput = new DateTime
      *
      * @param DateTimeZone $dateTimeZoneOutput
      * @return DateTimeImmutable|null
+     * @throws CaseUnsupportedException
      */
     public function getToImmutable(DateTimeZone $dateTimeZoneOutput = new DateTimeZone(Timezones::UTC)): DateTimeImmutable|null
     {