Clean up some redundant code in AsFilesTest.

instrumentation/src/androidTest/java/com/bumptech/glide/AsFileTest.java

@@ -18,59 +18,54 @@ import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
+import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 @RunWith(AndroidJUnit4.class)
 public class AsFileTest {
+  private static final String URL = "https://imgs.xkcd.com/comics/mc_hammer_age.png";
   @Rule public final TearDownGlide tearDownGlide = new TearDownGlide();
   private final ConcurrencyHelper concurrency = new ConcurrencyHelper();
   private final Context context = InstrumentationRegistry.getTargetContext();
 
+  @Before
+  public void setUp() {
+    MockModelLoader.mock(URL, getData());
+  }
+
   @Test
   public void asFile_withUrl_succeeds() {
-    String url = "https://www.w3schools.com/howto/img_fjords.jpg";
-
-    MockModelLoader.mock(url, getData());
-
     File file =
         concurrency.get(
             GlideApp.with(context)
                 .asFile()
-                .load("https://www.w3schools.com/howto/img_fjords.jpg")
+                .load(URL)
                 .submit());
     assertThat(file).isNotNull();
   }
 
   @Test
   public void asFile_withUrlAndDiskCacheStrategyData_succeeds() {
-    String url = "https://www.w3schools.com/howto/img_fjords.jpg";
-
-    MockModelLoader.mock(url, getData());
-
     File file =
         concurrency.get(
             GlideApp.with(context)
                 .asFile()
                 .diskCacheStrategy(DiskCacheStrategy.DATA)
-                .load("https://www.w3schools.com/howto/img_fjords.jpg")
+                .load(URL)
                 .submit());
     assertThat(file).isNotNull();
   }
 
   @Test
   public void asFile_withUrlAndDiskCacheStrategyResource_fails() {
-    String url = "https://www.w3schools.com/howto/img_fjords.jpg";
-
-    MockModelLoader.mock(url, getData());
-
     try {
       concurrency.get(
           GlideApp.with(context)
               .asFile()
               .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
-              .load("https://www.w3schools.com/howto/img_fjords.jpg")
+              .load(URL)
               .submit());
       fail();
     } catch (RuntimeException e) {
@@ -80,16 +75,12 @@ public class AsFileTest {
 
   @Test
   public void asFile_withUrlAndDiskCacheStrategyAll_fails() {
-    String url = "https://www.w3schools.com/howto/img_fjords.jpg";
-
-    MockModelLoader.mock(url, getData());
-
     try {
       concurrency.get(
           GlideApp.with(context)
               .asFile()
               .diskCacheStrategy(DiskCacheStrategy.ALL)
-              .load("https://www.w3schools.com/howto/img_fjords.jpg")
+              .load(URL)
               .submit());
       fail();
     } catch (RuntimeException e) {