test/jdk/java/util/Optional/BasicDouble.java

rev 48216 : 8140281: add no-arg Optional.orElseThrow() as preferred alternative to get()
Reviewed-by: XXX

@@ -122,10 +122,17 @@
         OptionalDouble empty = OptionalDouble.empty();
 
         double got = empty.orElseThrow(ObscureException::new);
     }
 
+    @Test(expectedExceptions=NoSuchElementException.class)
+    public void testEmptyOrElseThrowNoArg() throws Exception {
+        OptionalDouble empty = OptionalDouble.empty();
+
+        double got = empty.orElseThrow();
+    }
+
     @Test(groups = "unit")
     public void testPresent() {
         OptionalDouble empty = OptionalDouble.empty();
         OptionalDouble present = OptionalDouble.of(1.0);
 

@@ -135,11 +142,13 @@
         assertTrue(present.equals(OptionalDouble.of(1.0)));
         assertTrue(!present.equals(empty));
         assertTrue(Double.hashCode(1.0) == present.hashCode());
         assertFalse(present.toString().isEmpty());
         assertTrue(-1 != present.toString().indexOf(Double.toString(present.getAsDouble()).toString()));
+        assertTrue(-1 != present.toString().indexOf(Double.toString(present.orElseThrow()).toString()));
         assertEquals(1.0, present.getAsDouble());
+        assertEquals(1.0, present.orElseThrow());
 
         AtomicBoolean presentCheck = new AtomicBoolean();
         present.ifPresent(v -> presentCheck.set(true));
         assertTrue(presentCheck.get());
         presentCheck.set(false);