Fix NullableDate (#360)

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>dev.katsute</groupId>
     <artifactId>mal4j</artifactId>
-    <version>3.0.0</version>
+    <version>3.0.1</version>
 
     <profiles>
         <profile>

src/main/java/dev/katsute/mal4j/MyAnimeListSchema.java

@@ -75,9 +75,9 @@ protected static NullableDate parseNullableDate(final String date){
                 }
             });
 
-            private final Integer year = requireNonNull(() -> Integer.valueOf(parts[0]));
-            private final Integer month = requireNonNull(() -> Integer.valueOf(parts[1]));
-            private final Integer day = requireNonNull(() -> Integer.valueOf(parts[2]));
+            private final Integer year = requireNonNull(() -> parts.length < 1 ? null : Integer.valueOf(parts[0]));
+            private final Integer month = requireNonNull(() -> parts.length < 2 ? null : Integer.valueOf(parts[1]));
+            private final Integer day = requireNonNull(() -> parts.length < 3 ? null : Integer.valueOf(parts[2]));
 
             @Override
             public final Integer getYear(){

src/test/java/dev/katsute/mal4j/TestDateTime.java

@@ -0,0 +1,90 @@
+package dev.katsute.mal4j;
+
+import dev.katsute.mal4j.anime.property.time.Time;
+import dev.katsute.mal4j.property.NullableDate;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+final class TestDateTime {
+
+    @Test
+    final void testDate(){
+        assertNotNull(MyAnimeListSchema.parseDate("2020-03-14"));
+        assertNotNull(MyAnimeListSchema.parseDate("2020-03"));
+        assertNotNull(MyAnimeListSchema.parseDate("2020"));
+        assertNull(MyAnimeListSchema.parseDate("-"));
+        assertNull(MyAnimeListSchema.parseDate(""));
+        assertNull(MyAnimeListSchema.parseDate(null));
+    }
+
+    @Test
+    final void testNullableDateYMD(){
+        final NullableDate date = MyAnimeListSchema.parseNullableDate("2020-03-14");
+        assertEquals(2020, date.getYear());
+        assertEquals(3, date.getMonth());
+        assertEquals(14, date.getDay());
+        assertNotNull(date.getMillis());
+        assertNotNull(date.getDate());
+    }
+
+    @Test
+    final void testNullableDateYM(){
+        final NullableDate date = MyAnimeListSchema.parseNullableDate("2020-03");
+        assertEquals(2020, date.getYear());
+        assertEquals(3, date.getMonth());
+        assertNull(date.getDay());
+        assertNotNull(date.getMillis());
+        assertNotNull(date.getDate());
+    }
+
+    @Test
+    final void testNullableDateY(){
+        final NullableDate date = MyAnimeListSchema.parseNullableDate("2020");
+        assertEquals(2020, date.getYear());
+        assertNull(date.getMonth());
+        assertNull(date.getDay());
+        assertNotNull(date.getMillis());
+        assertNotNull(date.getDate());
+    }
+
+    @Test
+    final void testNullableDateNull(){
+        assertNull(MyAnimeListSchema.parseDate("-"));
+        assertNull(MyAnimeListSchema.parseDate(""));
+        assertNull(MyAnimeListSchema.parseDate(null));
+    }
+
+    @Test
+    final void testYMD(){
+        assertEquals("2020-03-14", MyAnimeListSchema.asYMD(1584158400000L));
+        assertNull(MyAnimeListSchema.asYMD(null));
+    }
+
+    @Test
+    final void testISO(){
+        assertEquals(1584144000000L, MyAnimeListSchema.parseISO8601("2020-03-14T00:00:00+00:00"));
+        assertNull(MyAnimeListSchema.parseISO8601(null));
+    }
+
+    @Test
+    final void testTimeAM(){
+        final Time time = MyAnimeListSchema.asTime("01:23");
+        assertEquals(1, time.get12Hour());
+        assertEquals(1, time.getHour());
+        assertEquals(23, time.getMinute());
+        assertTrue(time.isAM());
+        assertFalse(time.isPM());
+    }
+
+    @Test
+    final void testTimePM(){
+        final Time time = MyAnimeListSchema.asTime("14:56");
+        assertEquals(2, time.get12Hour());
+        assertEquals(14, time.getHour());
+        assertEquals(56, time.getMinute());
+        assertFalse(time.isAM());
+        assertTrue(time.isPM());
+    }
+
+}

src/test/java/dev/katsute/mal4j/TestExperimentalEnabler.java

@@ -6,7 +6,7 @@
 import org.junit.jupiter.api.*;
 
 @TestMethodOrder(MethodOrderer.OrderAnnotation.class)
-public class TestExperimentalEnabler {
+final class TestExperimentalEnabler {
 
     private static MyAnimeList mal;
 

src/test/java/dev/katsute/mal4j/TestJson.java

@@ -16,7 +16,7 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 @SuppressWarnings("SpellCheckingInspection")
-public class TestJson {
+final class TestJson {
 
     private static JsonObject jsonObject;
     private static List<?> jsonArray;

src/test/java/dev/katsute/mal4j/TestREADME.java

@@ -14,7 +14,7 @@
 
 // this tests only that code compiles
 @SuppressWarnings("unused")
-public class TestREADME {
+abstract class TestREADME {
 
     public void testSearchQueries(){
         MyAnimeList mal = MyAnimeList.withClientID("");