Migrate test input from containsAllIn to its replacement, containsAtL…

…eastElementsIn.

containsAllIn hasn't existed since 2019.

It's interesting that this test apparently still worked. Refaster must be faily permissive?

It's also interesting that this change... breaks the test? Maybe the workaround from CL 78788806 stopped working at some point, but it was after 2019, so we didn't notice?

(discovered during #2882 (comment))

PiperOrigin-RevId: 423797769

core/src/test/java/com/google/errorprone/refaster/testdata/input/WildcardUnificationTemplateExample.java

@@ -27,9 +27,10 @@
  */
 public class WildcardUnificationTemplateExample {
   public void example() {
+    // BUG: The template should remove the hasSize call below!
     ImmutableList<String> actual = ImmutableList.of("kurt", "kluever");
     ImmutableList<String> expected = ImmutableList.of("kluever", "kurt");
     assertThat(actual).hasSize(expected.size());
-    assertThat(actual).containsAllIn(expected);
+    assertThat(actual).containsExactlyElementsIn(expected);
   }
 }

core/src/test/java/com/google/errorprone/refaster/testdata/output/WildcardUnificationTemplateExample.java

@@ -27,9 +27,10 @@
  */
 public class WildcardUnificationTemplateExample {
   public void example() {
+    // BUG: The template should remove the hasSize call below!
     ImmutableList<String> actual = ImmutableList.of("kurt", "kluever");
     ImmutableList<String> expected = ImmutableList.of("kluever", "kurt");
+    assertThat(actual).hasSize(expected.size());
     assertThat(actual).containsExactlyElementsIn(expected);
-
   }
 }

core/src/test/java/com/google/errorprone/refaster/testdata/template/WildcardUnificationTemplate.java

@@ -30,7 +30,7 @@ public class WildcardUnificationTemplate {
   @BeforeTemplate
   static void containsAllOf(IterableSubject subject, Collection<?> expected) {
     subject.hasSize(expected.size());
-    subject.containsAllIn(expected);
+    subject.containsAtLeastElementsIn(expected);
   }
 
   @AfterTemplate