add tests for millisToDateTimeString to StringToolsTest

PhilippSalvisberg · PhilippSalvisberg · commit 4a1802ef4215 · 2021-01-03T10:53:57.000+01:00
diff --git a/sqldev/src/test/java/org/utplsql/sqldev/test/StringToolsTest.java b/sqldev/src/test/java/org/utplsql/sqldev/test/StringToolsTest.java
@@ -17,6 +17,7 @@
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.TimeZone;
 
 import org.junit.Assert;
 import org.junit.Test;
@@ -53,5 +54,18 @@ public void two_entries_as_simpleCSV() {
         list.add("world");
         Assert.assertEquals("hello, world", StringTools.getSimpleCSV(list));
     }
+    
+    @Test
+    public void earliest_date_from__millis() {
+        long zoneDiff = TimeZone.getDefault().getRawOffset();
+        Assert.assertEquals("1970-01-01T00:00:00.000000", StringTools.millisToDateTimeString(-zoneDiff));
+    }
+    
+    @Test
+    public void date_from__millis_with_millis() {
+        long zoneDiff = TimeZone.getDefault().getRawOffset();
+        Assert.assertEquals("1970-01-01T00:00:42.123000", StringTools.millisToDateTimeString(42123 - zoneDiff));
+    }
+
 
 }
