Make test method targets clearer

Author: ZacSweers

src/test/java/rx/SingleTest.java

@@ -1581,7 +1581,7 @@ public void call(SingleSubscriber<? super String> observer) {
     }
 
     @Test
-    public void testUntilFires() {
+    public void takeUntilFires() {
         PublishSubject<Integer> source = PublishSubject.create();
         PublishSubject<Integer> until = PublishSubject.create();
 
@@ -1602,7 +1602,7 @@ public void testUntilFires() {
     }
 
     @Test
-    public void testUntilFiresObservable() {
+    public void takeUntilFiresObservable() {
         PublishSubject<Integer> source = PublishSubject.create();
         PublishSubject<Integer> until = PublishSubject.create();
 
@@ -1623,7 +1623,7 @@ public void testUntilFiresObservable() {
     }
 
     @Test
-    public void testDownstreamUnsubscribes() {
+    public void takeUntilDownstreamUnsubscribes() {
         PublishSubject<Integer> source = PublishSubject.create();
         PublishSubject<Integer> until = PublishSubject.create();
 
@@ -1646,7 +1646,7 @@ public void testDownstreamUnsubscribes() {
     }
 
     @Test
-    public void testDownstreamUnsubscribesObservable() {
+    public void takeUntilDownstreamUnsubscribesObservable() {
         PublishSubject<Integer> source = PublishSubject.create();
         PublishSubject<Integer> until = PublishSubject.create();