[infer][tracing] add an example of inter-procedural array out of bounds error

Summary:
In tracing mode, Infer can compute pre-condtions for hitting a array access out of bounds. Adding a small such example in the tests.

infer/tests/codetoanalyze/java/tracing/ArrayIndexOutOfBoundsExceptionExample.java

@@ -7,8 +7,10 @@ import com.facebook.infer.annotation.Verify;
 public class ArrayIndexOutOfBoundsExceptionExample {
 
   void callMethodFromArray(T[] array, int index) {
+    if (array[index] != null) {
       array[index].f();
     }
+  }
 
   @Verify
   void callWithWrongIndex(T[] array, int index) {
@@ -19,10 +21,23 @@ public class ArrayIndexOutOfBoundsExceptionExample {
     }
   }
 
-  @Verify
   void callOutOfBound() {
     T[] array = new T[42];
     callMethodFromArray(array, -5);
   }
 
+  void callAtIndex(T[] array, int index) {
+    array[index].f();
+  }
+
+  void withFixedIndex(T[] array) {
+    int index = 9;
+    callAtIndex(array, index);
+  }
+
+  void ArrayIndexOutOfBoundsInCallee() {
+    T[] array = new T[8];
+    withFixedIndex(array);
+  }
+
 }

infer/tests/endtoend/java/tracing/ArrayIndexOutOfBoundsExceptionTest.java

@@ -3,7 +3,7 @@
 package endtoend.java.tracing;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsErrorInMethod.contains;
+import static utils.matchers.ResultContainsExactly.containsExactly;
 
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -33,13 +33,18 @@ public class ArrayIndexOutOfBoundsExceptionTest {
   @Test
   public void whenEradicateRunsOnConstructorThenFieldNotInitializedIsFound()
       throws IOException, InterruptedException, InferException {
+    String[] methods = {
+        "callOutOfBound",
+        "callWithWrongIndex",
+        "ArrayIndexOutOfBoundsInCallee",
+    };
     assertThat(
         "Results should contain " + ARRAY_OUT_OF_BOUND,
         inferResults,
-        contains(
+        containsExactly(
             ARRAY_OUT_OF_BOUND,
             SOURCE_FILE,
-            "callOutOfBound"
+            methods
         )
     );
   }

infer/tests/endtoend/java/tracing/LocallyDefinedExceptionTest.java

@@ -1,7 +1,7 @@
 package endtoend.java.tracing;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsErrorInMethod.contains;
+import static utils.matchers.ResultContainsExactly.containsExactly;
 
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -31,13 +31,16 @@ public class LocallyDefinedExceptionTest {
   @Test
   public void whenEradicateRunsOnConstructorThenFieldNotInitializedIsFound()
       throws IOException, InterruptedException, InferException {
+    String[] methods = {
+        "fieldInvariant"
+    };
     assertThat(
         "Results should contain " + LOCALLY_DEFINED_EXCEPTION,
         inferResults,
-        contains(
+        containsExactly(
             LOCALLY_DEFINED_EXCEPTION,
             SOURCE_FILE,
-            "fieldInvariant"
+            methods
         )
     );
   }

infer/tests/endtoend/java/tracing/NullPointerExceptionTest.java

@@ -3,7 +3,7 @@
 package endtoend.java.tracing;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsErrorInMethod.contains;
+import static utils.matchers.ResultContainsExactly.containsExactly;
 
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -33,13 +33,16 @@ public class NullPointerExceptionTest {
   @Test
   public void whenEradicateRunsOnConstructorThenFieldNotInitializedIsFound()
       throws IOException, InterruptedException, InferException {
+    String[] methods = {
+        "callDeref"
+    };
     assertThat(
         "Results should contain " + NPE,
         inferResults,
-        contains(
+        containsExactly(
             NPE,
             SOURCE_FILE,
-            "callDeref"
+            methods
         )
     );
   }

infer/tests/endtoend/java/tracing/ReportOnMainTest.java

@@ -3,7 +3,7 @@
 package endtoend.java.tracing;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsErrorInMethod.contains;
+import static utils.matchers.ResultContainsExactly.containsExactly;
 
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -33,13 +33,16 @@ public class ReportOnMainTest {
   @Test
   public void whenEradicateRunsOnConstructorThenFieldNotInitializedIsFound()
       throws IOException, InterruptedException, InferException {
+    String[] methods = {
+        "main"
+    };
     assertThat(
         "Results should contain " + NPE,
         inferResults,
-        contains(
+        containsExactly(
             NPE,
             SOURCE_FILE,
-            "main"
+            methods
         )
     );
   }