1.x: alias Observable.doOnCompleted to match Completable and 2x

Closes #3700.

Author: zach-klippenstein

src/main/java/rx/Completable.java

@@ -1222,9 +1222,20 @@ public void onSubscribe(Subscription d) {
      * @param onComplete the callback to call when this emits an onComplete event
      * @return the new Completable instance
      * @throws NullPointerException if onComplete is null
+     * @deprecated Use {@link #doOnCompleted(Action0)} instead.
      */
-    public final Completable doOnComplete(Action0 onComplete) {
-        return doOnLifecycle(Actions.empty(), Actions.empty(), onComplete, Actions.empty(), Actions.empty());
+    @Deprecated public final Completable doOnComplete(Action0 onComplete) {
+        return doOnCompleted(onComplete);
+    }
+
+    /**
+     * Returns a Completable which calls the given onCompleted callback if this Completable completes.
+     * @param onCompleted the callback to call when this emits an onComplete event
+     * @return the new Completable instance
+     * @throws NullPointerException if onComplete is null
+     */
+    public final Completable doOnCompleted(Action0 onCompleted) {
+        return doOnLifecycle(Actions.empty(), Actions.empty(), onCompleted, Actions.empty(), Actions.empty());
     }
 
     /**

src/test/java/rx/CompletableTest.java

@@ -1673,10 +1673,10 @@ public void onCompleted() {
     }
 
     @Test(timeout = 1000)
-    public void doOnCompleteNormal() {
+    public void doOnCompletedNormal() {
         final AtomicInteger calls = new AtomicInteger();
 
-        Completable c = normal.completable.doOnComplete(new Action0() {
+        Completable c = normal.completable.doOnCompleted(new Action0() {
             @Override
             public void call() {
                 calls.getAndIncrement();
@@ -1689,10 +1689,10 @@ public void call() {
     }
 
     @Test(timeout = 1000)
-    public void doOnCompleteError() {
+    public void doOnCompletedError() {
         final AtomicInteger calls = new AtomicInteger();
 
-        Completable c = error.completable.doOnComplete(new Action0() {
+        Completable c = error.completable.doOnCompleted(new Action0() {
             @Override
             public void call() {
                 calls.getAndIncrement();
@@ -1710,13 +1710,13 @@ public void call() {
     }
 
     @Test(expected = NullPointerException.class)
-    public void doOnCompleteNull() {
-        normal.completable.doOnComplete(null);
+    public void doOnCompletedNull() {
+        normal.completable.doOnCompleted(null);
     }
 
     @Test(timeout = 1000, expected = TestException.class)
-    public void doOnCompleteThrows() {
-        Completable c = normal.completable.doOnComplete(new Action0() {
+    public void doOnCompletedThrows() {
+        Completable c = normal.completable.doOnCompleted(new Action0() {
             @Override
             public void call() { throw new TestException(); }
         });
@@ -2469,7 +2469,7 @@ public void subscribe() throws InterruptedException {
 
         Completable c = normal.completable
                 .delay(100, TimeUnit.MILLISECONDS)
-                .doOnComplete(new Action0() {
+                .doOnCompleted(new Action0() {
                     @Override
                     public void call() {
                         complete.set(true);
@@ -2489,7 +2489,7 @@ public void subscribeDispose() throws InterruptedException {
 
         Completable c = normal.completable
                 .delay(200, TimeUnit.MILLISECONDS)
-                .doOnComplete(new Action0() {
+                .doOnCompleted(new Action0() {
                     @Override
                     public void call() {
                         complete.set(true);