Backport Set.of factories
Test: tools/test.py --dex_vm all --no-internal -v *Backport*Test*
Test: tools/test.py --no-internal -v *GenerateBackportMethods*
Change-Id: I7c351021c1bcb420e197f664aeea832d1c5aaeca
diff --git a/src/test/examplesJava9/backport/SetBackportJava9Main.java b/src/test/examplesJava9/backport/SetBackportJava9Main.java
new file mode 100644
index 0000000..d824bd0
--- /dev/null
+++ b/src/test/examplesJava9/backport/SetBackportJava9Main.java
@@ -0,0 +1,207 @@
+// Copyright (c) 2019, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package backport;
+
+import java.util.Set;
+
+public class SetBackportJava9Main {
+
+ public static void main(String[] args) {
+ testOf0();
+ testOf1();
+ testOf2();
+ testOf10();
+ testOfVarargs();
+ }
+
+ private static void testOf0() {
+ Set<Object> ofObject = Set.of();
+ assertEquals(0, ofObject.size());
+ assertFalse(ofObject.contains(new Object()));
+ assertMutationNotAllowed(ofObject);
+
+ Set<Integer> ofInteger = Set.of();
+ assertEquals(0, ofInteger.size());
+ assertFalse(ofInteger.contains(0));
+ }
+
+ private static void testOf1() {
+ Object anObject = new Object();
+ Set<Object> ofObject = Set.of(anObject);
+ assertEquals(1, ofObject.size());
+ assertTrue(ofObject.contains(anObject));
+ assertFalse(ofObject.contains(new Object()));
+ assertMutationNotAllowed(ofObject);
+
+ Set<Integer> ofInteger = Set.of(1);
+ assertEquals(1, ofInteger.size());
+ assertTrue(ofInteger.contains(1));
+ assertFalse(ofInteger.contains(2));
+
+ try {
+ Set.of((Object) null);
+ throw new AssertionError();
+ } catch (NullPointerException expected) {
+ }
+ }
+
+ private static void testOf2() {
+ Object anObject0 = new Object();
+ Object anObject1 = new Object();
+ Set<Object> ofObject = Set.of(anObject0, anObject1);
+ assertEquals(2, ofObject.size());
+ assertTrue(ofObject.contains(anObject0));
+ assertTrue(ofObject.contains(anObject1));
+ assertFalse(ofObject.contains(new Object()));
+ assertMutationNotAllowed(ofObject);
+
+ Set<Integer> ofInteger = Set.of(1, 2);
+ assertEquals(2, ofInteger.size());
+ assertTrue(ofInteger.contains(1));
+ assertTrue(ofInteger.contains(2));
+ assertFalse(ofInteger.contains(3));
+
+ Set<Object> ofMixed = Set.of(anObject0, 1);
+ assertEquals(2, ofMixed.size());
+ assertTrue(ofMixed.contains(anObject0));
+ assertTrue(ofMixed.contains(1));
+ assertFalse(ofMixed.contains(2));
+ assertFalse(ofMixed.contains(anObject1));
+ assertMutationNotAllowed(ofMixed);
+
+ try {
+ Set.of(1, null);
+ throw new AssertionError();
+ } catch (NullPointerException expected) {
+ }
+
+ try {
+ Set.of(1, 1);
+ throw new AssertionError();
+ } catch (IllegalArgumentException expected) {
+ assertEquals("duplicate element: 1", expected.getMessage());
+ }
+ }
+
+ private static void testOf10() {
+ Object anObject0 = new Object();
+ Object anObject6 = new Object();
+ Object anObject9 = new Object();
+ Set<Object> ofObject =
+ Set.of(anObject0, new Object(), new Object(), new Object(), new Object(), new Object(),
+ anObject6, new Object(), new Object(), anObject9);
+ assertEquals(10, ofObject.size());
+ assertTrue(ofObject.contains(anObject0));
+ assertTrue(ofObject.contains(anObject6));
+ assertTrue(ofObject.contains(anObject9));
+ assertFalse(ofObject.contains(new Object()));
+ assertMutationNotAllowed(ofObject);
+
+ Set<Integer> ofInteger = Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
+ assertEquals(10, ofInteger.size());
+ assertTrue(ofInteger.contains(0));
+ assertTrue(ofInteger.contains(6));
+ assertTrue(ofInteger.contains(9));
+ assertFalse(ofInteger.contains(10));
+
+ Set<Object> ofMixed = Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, anObject9);
+ assertEquals(10, ofMixed.size());
+ assertTrue(ofMixed.contains(0));
+ assertTrue(ofMixed.contains(6));
+ assertTrue(ofMixed.contains(anObject9));
+ assertFalse(ofMixed.contains(anObject0));
+ assertMutationNotAllowed(ofMixed);
+
+ try {
+ Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, null);
+ throw new AssertionError();
+ } catch (NullPointerException expected) {
+ }
+
+ try {
+ Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 0);
+ throw new AssertionError();
+ } catch (IllegalArgumentException expected) {
+ assertEquals("duplicate element: 0", expected.getMessage());
+ }
+ }
+
+ private static void testOfVarargs() {
+ Object anObject0 = new Object();
+ Object anObject6 = new Object();
+ Object anObject10 = new Object();
+ Set<Object> ofObject =
+ Set.of(anObject0, new Object(), new Object(), new Object(), new Object(), new Object(),
+ anObject6, new Object(), new Object(), new Object(), anObject10);
+ assertEquals(11, ofObject.size());
+ assertTrue(ofObject.contains(anObject0));
+ assertTrue(ofObject.contains(anObject6));
+ assertTrue(ofObject.contains(anObject10));
+ assertFalse(ofObject.contains(new Object()));
+ assertMutationNotAllowed(ofObject);
+
+ Set<Integer> ofInteger = Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
+ assertEquals(11, ofInteger.size());
+ assertTrue(ofInteger.contains(0));
+ assertTrue(ofInteger.contains(6));
+ assertTrue(ofInteger.contains(10));
+ assertFalse(ofInteger.contains(11));
+
+ Set<Object> ofMixed = Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, anObject10);
+ assertEquals(11, ofMixed.size());
+ assertTrue(ofMixed.contains(0));
+ assertTrue(ofMixed.contains(6));
+ assertTrue(ofMixed.contains(anObject10));
+ assertFalse(ofMixed.contains(10));
+ assertFalse(ofMixed.contains(anObject0));
+ assertMutationNotAllowed(ofMixed);
+
+ // Ensure the supplied mutable array is not used directly since it is mutable.
+ Object[] mutableArray = { anObject0 };
+ Set<Object> ofMutableArray = Set.of(mutableArray);
+ mutableArray[0] = anObject10;
+ assertTrue(ofMutableArray.contains(anObject0));
+ assertFalse(ofMutableArray.contains(anObject10));
+
+ try {
+ Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, null);
+ throw new AssertionError();
+ } catch (NullPointerException expected) {
+ }
+
+ try {
+ Set.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0);
+ throw new AssertionError();
+ } catch (IllegalArgumentException expected) {
+ assertEquals("duplicate element: 0", expected.getMessage());
+ }
+ }
+
+ private static void assertMutationNotAllowed(Set<Object> ofObject) {
+ try {
+ ofObject.add(new Object());
+ throw new AssertionError();
+ } catch (UnsupportedOperationException expected) {
+ }
+ }
+
+ private static void assertTrue(boolean value) {
+ if (!value) {
+ throw new AssertionError("Expected <true> but was <false>");
+ }
+ }
+
+ private static void assertFalse(boolean value) {
+ if (value) {
+ throw new AssertionError("Expected <false> but was <true>");
+ }
+ }
+
+ private static void assertEquals(Object expected, Object actual) {
+ if (expected != actual && !expected.equals(actual)) {
+ throw new AssertionError("Expected <" + expected + "> but was <" + actual + ">");
+ }
+ }
+}
