Don't ignore days in time delta

PullRequest: graalpython/3105

Author: selhagani

graalpython/com.oracle.graal.python.test.integration/src/com/oracle/graal/python/test/integration/interop/TimeDateTest.java

@@ -42,6 +42,8 @@
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 
 import java.io.ByteArrayOutputStream;
 import java.time.LocalDate;
@@ -166,6 +168,22 @@ public void testDateTimeDateTime03() {
         assertEquals(ZoneId.of("UTC+4"), value.asTimeZone());
     }
 
+    @Test
+    public void testDateTimeDateTime04() {
+        String source = "from datetime import timedelta, datetime, timezone\n" +
+                        "\n" +
+                        "zone = timezone(timedelta(seconds=-18000), \"US/Eastern\")\n" +
+                        "dt = datetime(1970, 1, 1, 0, 0, 1, tzinfo=zone)\n" +
+                        "\n" +
+                        "\n" +
+                        "dt";
+        Value value = getValue(source, ZoneId.of("US/Eastern"));
+        assertTrue("Value represents a datatime: " + value, value.isDate());
+        assertTrue("Value represents a datatime: " + value, value.isTime());
+        assertTrue("Value represents a timezone: " + value, value.isTimeZone());
+        assertNotNull("Can return a time zone", value.asTimeZone());
+    }
+
     @Test
     public void testStructTime01() {
         String source = "import time\n" +

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/PythonAbstractObject.java

@@ -993,7 +993,9 @@ public ZoneId asTimeZone(
                             Object delta = lib.invokeMember(tzinfo, "utcoffset", new Object[]{this});
                             if (delta != PNone.NONE) {
                                 int seconds = castToIntNode.execute(inliningTarget, lib.readMember(delta, "seconds"));
-                                return createZoneId(seconds);
+                                int days = castToIntNode.execute(inliningTarget, lib.readMember(delta, "days"));
+                                int offset = days * 3600 * 24 + seconds;
+                                return createZoneId(offset);
                             }
                         }
                     } catch (UnsupportedMessageException | UnknownIdentifierException | ArityException | UnsupportedTypeException ex) {