fix: broken test

This test is weird: since fd45b74 it only test the .toString() method...

Author: Allsimon

modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java

@@ -38,10 +38,7 @@
 
 import java.io.File;
 import java.math.BigDecimal;
-import java.time.LocalDate;
-import java.time.OffsetDateTime;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
+import java.time.*;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -535,11 +532,11 @@ public void toDefaultValueDateTimeLegacyTest() {
         // Test default value for date-time-local format
         StringSchema dateTimeLocalSchema = new StringSchema();
         dateTimeLocalSchema.setFormat("date-time-local");
-        dateTimeLocalSchema.setDefault("2007-12-03T10:15:30");
+        dateTimeLocalSchema.setDefault(LocalDateTime.parse("2007-12-03T10:15:30"));
         defaultValue = codegen.toDefaultValue(dateTimeLocalSchema);
 
-        // dateLibrary <> java8, should return null
-        Assert.assertNull(defaultValue);
+        // dateLibrary <> java8
+        Assert.assertEquals(defaultValue, "2007-12-03T10:15:30");
     }
 
     @Test