Improving tests about interface default methods (and virtual calls)

Reviewed By: jvillard

Differential Revision: D22015269

fbshipit-source-id: b85a3ee1d

Author: davidpichardie

infer/tests/codetoanalyze/java/biabduction/DefaultInInterface.java

@@ -38,7 +38,6 @@ codetoanalyze/java/biabduction/CursorLeaks.java, codetoanalyze.java.infer.Cursor
 codetoanalyze/java/biabduction/CursorNPEs.java, codetoanalyze.java.infer.CursorNPEs.cursorFromContentResolverNPE(java.lang.String):void, 8, NULL_DEREFERENCE, B1, ERROR, [start of procedure cursorFromContentResolverNPE(...)]
 codetoanalyze/java/biabduction/CursorNPEs.java, codetoanalyze.java.infer.CursorNPEs.cursorFromDownloadManagerNPE(android.app.DownloadManager):int, 5, NULL_DEREFERENCE, B2, ERROR, [start of procedure cursorFromDownloadManagerNPE(...)]
 codetoanalyze/java/biabduction/CursorNPEs.java, codetoanalyze.java.infer.CursorNPEs.cursorFromMediaNPE():void, 2, NULL_DEREFERENCE, B1, ERROR, [start of procedure cursorFromMediaNPE()]
-codetoanalyze/java/biabduction/DefaultInInterface.java, DefaultInInterface.bad():void, 1, NULL_DEREFERENCE, B1, ERROR, [start of procedure bad(),start of procedure defaultMethod1(),return from a call to Object I.defaultMethod1()]
 codetoanalyze/java/biabduction/DivideByZero.java, codetoanalyze.java.infer.DivideByZero.callDivideByZeroInterProc():int, 1, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure callDivideByZeroInterProc(),start of procedure divideByZeroInterProc(...)]
 codetoanalyze/java/biabduction/DivideByZero.java, codetoanalyze.java.infer.DivideByZero.divByZeroLocal(java.lang.String):int, 3, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure divByZeroLocal(...)]
 codetoanalyze/java/biabduction/DivideByZero.java, codetoanalyze.java.infer.DivideByZero.divideByZeroWithStaticField():int, 2, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure divideByZeroWithStaticField(),start of procedure setXToZero(),return from a call to void DivideByZero.setXToZero(),start of procedure divideByZeroInterProc(...)]

infer/tests/codetoanalyze/java/biabduction/issues.exp

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+public class DefaultInInterface {
+
+  static interface I {
+    default Object defaultMethod1() {
+      return null;
+    }
+
+    default Object defaultMethod2() {
+      return "foo";
+    }
+  }
+
+  public static class A implements I {
+    public void defaultCallNPE() {
+      System.out.println(this.defaultMethod1().toString());
+    }
+
+    public void defaultCallOk() {
+      System.out.println(this.defaultMethod2().toString());
+    }
+  }
+
+  public static class B extends A {
+    public Object defaultMethod1() {
+      return "foo";
+    }
+
+    public Object defaultMethod2() {
+      return null;
+    }
+
+    public void overridenCallOk() {
+      System.out.println(this.defaultMethod1().toString());
+    }
+
+    public void overridenCallNPE() {
+      System.out.println(this.defaultMethod2().toString());
+    }
+  }
+
+  static void FN_uncertainCallNPE(int i) {
+    A firstAthenB = new A();
+    if (i > 0) { // feasible path
+      firstAthenB = new B();
+    }
+    System.out.println(firstAthenB.defaultMethod1().toString());
+  }
+
+  static boolean alwaysFalse() {
+    return false;
+  }
+
+  static void FP_uncertainCallOk(int i) {
+    A firstAthenB = new A();
+    if (alwaysFalse()) { // unfeasible path
+      firstAthenB = new B();
+    }
+    System.out.println(firstAthenB.defaultMethod2().toString());
+  }
+}

infer/tests/codetoanalyze/java/pulse/DefaultInInterface.java

@@ -1,3 +1,6 @@
+codetoanalyze/java/pulse/DefaultInInterface.java, DefaultInInterface$A.defaultCallNPE():void, 1, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,when calling `Object DefaultInInterface$I.defaultMethod1()` here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,passed as argument to `Object DefaultInInterface$I.defaultMethod1()`,return from call to `Object DefaultInInterface$I.defaultMethod1()`,assigned,invalid access occurs here]
+codetoanalyze/java/pulse/DefaultInInterface.java, DefaultInInterface$B.overridenCallNPE():void, 1, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,when calling `Object DefaultInInterface$B.defaultMethod2()` here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,passed as argument to `Object DefaultInInterface$B.defaultMethod2()`,return from call to `Object DefaultInInterface$B.defaultMethod2()`,assigned,invalid access occurs here]
+codetoanalyze/java/pulse/DefaultInInterface.java, DefaultInInterface.FP_uncertainCallOk(int):void, 5, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,when calling `Object DefaultInInterface$B.defaultMethod2()` here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,passed as argument to `Object DefaultInInterface$B.defaultMethod2()`,return from call to `Object DefaultInInterface$B.defaultMethod2()`,assigned,invalid access occurs here]
 codetoanalyze/java/pulse/DynamicDispatch.java, codetoanalyze.java.infer.DynamicDispatch$WithField.dispatchOnFieldOK_FP():void, 3, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,when calling `Object DynamicDispatch$Supertype.bar()` here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,passed as argument to `Object DynamicDispatch$Supertype.bar()`,return from call to `Object DynamicDispatch$Supertype.bar()`,assigned,invalid access occurs here]
 codetoanalyze/java/pulse/DynamicDispatch.java, codetoanalyze.java.infer.DynamicDispatch.dynamicDispatchCallsWrapperWithSubtypeOK_FP():void, 3, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,when calling `Object DynamicDispatch.dynamicDispatchWrapperBar(DynamicDispatch$Supertype)` here,when calling `Object DynamicDispatch$Supertype.bar()` here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,passed as argument to `Object DynamicDispatch.dynamicDispatchWrapperBar(DynamicDispatch$Supertype)`,return from call to `Object DynamicDispatch.dynamicDispatchWrapperBar(DynamicDispatch$Supertype)`,assigned,invalid access occurs here]
 codetoanalyze/java/pulse/DynamicDispatch.java, codetoanalyze.java.infer.DynamicDispatch.dynamicDispatchCallsWrapperWithSupertypeBad():void, 3, NULLPTR_DEREFERENCE, no_bucket, ERROR, [invalidation part of the trace starts here,when calling `Object DynamicDispatch.dynamicDispatchWrapperBar(DynamicDispatch$Supertype)` here,when calling `Object DynamicDispatch$Supertype.bar()` here,assigned,is the null pointer,use-after-lifetime part of the trace starts here,passed as argument to `Object DynamicDispatch.dynamicDispatchWrapperBar(DynamicDispatch$Supertype)`,return from call to `Object DynamicDispatch.dynamicDispatchWrapperBar(DynamicDispatch$Supertype)`,assigned,invalid access occurs here]