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[nullsafe] Make FieldNotInitialized cover negative cases together with positive ones

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Summary: let's always have positive and negative case for each feature we test

Reviewed By: ngorogiannis

Differential Revision: D17206785

fbshipit-source-id: 5791ace48
master
Mitya Lyubarskiy 5 years ago committed by Facebook Github Bot
parent 5bd61e75f2
commit 63a5ffb4dc
2 changed files with 95 additions and 71 deletions
Show Stats Download Patch File Download Diff File

148
infer/tests/codetoanalyze/java/nullsafe-default/FieldNotInitialized.java
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@ -10,7 +10,6 @@ package codetoanalyze.java.nullsafe_default;
import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.widget.EditText;
import com.facebook.infer.annotation.Assertions;
import com.facebook.infer.annotation.Initializer;
import com.facebook.infer.annotation.SuppressViewNullability;
@ -23,60 +22,61 @@ import javax.inject.Inject;
public class FieldNotInitialized {
String a;
String notNullIsBAD; // BAD: need to initialize it
@Nullable String b;
@Nullable String nullableIsOK; // OK: will be init with null
@Nonnull String c; // Means: assume it will be initialized to a nonnull value somewhere else.
@Nonnull
String nonnullIsOK; // Means: assume it will be initialized to a nonnull value somewhere else.
@Inject String d; // Means: assume it will be initialized via dependency injection
@NonNull
String nonNullIsOK; // Means: assume it will be initialized to a nonnull value somewhere else.
@NonNull String e;
@Inject String injectIsOK; // Means: assume it will be initialized via dependency injection
@Bind EditText f; // Means: assume it will be initialized, and ignore null assignment
@Bind String bindIsOK; // Means: assume it will be initialized, and ignore null assignment
@SuppressViewNullability EditText g;
// Means: assume it will be initialized, and ignore null assignment
@SuppressViewNullability String suppressViewNullabilityIsOK;
// Eradicate should only report one initialization error
FieldNotInitialized() {}
void testNullifyFields() {
f = null; // OK the framework could write null into the field
g = null; // OK the framework could write null into the field
bindIsOK = null; // OK: the framework could write null into the field
suppressViewNullabilityIsOK = null; // OK: the framework could write null into the field
nonnullIsOK = null; // BAD: can not nullify this
injectIsOK = null; // BAD: can not nullify this
}
class OnlyRead {
Object o;
OnlyRead() {
Object x = o; // not initialized
Object x = o; // BAD: we merely read this variable, but forgot to initialize
}
}
class WriteItself {
Object o;
class WriteItselfIsBAD {
Object ok;
Object bad;
WriteItself() {
o = o; // not initialized
WriteItselfIsBAD() {
ok = "";
bad = bad; // BAD: Can not initialize with itself
}
}
class Swap {
class InitializationOrder {
Object o1;
Object o2;
Swap() {
o1 = o2; // not initialized
InitializationOrder(int a) {
o1 = o2; // BAD: not initialized
o2 = new Object();
}
}
class SwapOK {
Object o1;
Object o2;
SwapOK() {
o1 = new Object();
InitializationOrder(double a) {
o1 = new Object(); // OK
o2 = o1;
}
}
@ -95,72 +95,88 @@ public class FieldNotInitialized {
}
}
class ConditionalFieldInit {
Object o1;
@Nullable Object o2 = null;
public ConditionalFieldInit() {
if (o2 != null) {
o1 = new Object(); // Not always initialized
class ShouldInitializeInAllBranches {
Object f1;
Object f2;
Object f3;
Object f4;
Object f5;
public ShouldInitializeInAllBranches(int a) {
f4 = new Object();
Object f5 = new Object(); // BAD: shadowing; not an initialization
if (a == 42) {
f1 = new Object();
f2 = new Object();
} else {
f3 = new Object();
if (a == 43) {
f1 = new Object();
// BAD: f2 is not initialized in this branch
} else {
f1 = new Object();
f2 = new Object();
}
}
}
}
class InitIfNull {
Object o;
Object good;
Object shouldBeGood_FIXME;
public InitIfNull() {
if (o == null) o = new Object();
}
}
class InitIfNull2 {
Object o;
public InitIfNull2(Object x) {
if (o == null) o = x;
}
}
class InitIfNull3 {
Object o;
Object getNotNull() {
return new Object();
}
public InitIfNull3() {
if (o == null) o = getNotNull();
if (good == null) {
good = new Object();
// bad is considered to be initialized not in all branches.
// (which is bit weird: we know that good is always null by default)
// TODO(T53537343) teach nullsafe that all fields are initially null in constructor
shouldBeGood_FIXME = new Object();
}
}
}
class InitCircular {
String s;
String bad;
String stillBad;
String good;
String knownNotNull = "";
InitCircular() {
String tmp = s;
s = tmp; // s is not initialized: circular initialization
String tmp = bad;
bad = tmp; // BAD: circular initialization
stillBad = bad; // BAD: try to initialize from circularly initalized var
String tmp2 = knownNotNull;
good = tmp2; // OK
}
}
class InitWithOtherClass {
class OtherClass {
String s = "";
String nonNull = "";
@Nullable String nullable = "";
}
String s;
String bad;
String good;
InitWithOtherClass(OtherClass x) {
s = x.s;
bad = x.nullable; // BAD: might be null
good = x.nonNull; // OK: we know can not be null
}
}
class InitWithThisClass {
String s;
// Check that Infer does not confuse things
// in copy constuctors.
class InitWithTheSameClass {
String good;
String bad;
InitWithThisClass(InitWithThisClass x) {
s = x.s;
InitWithTheSameClass(InitWithTheSameClass x) {
good = x.good; // OK: this is not a circular initialization
bad = bad; // BAD: this is a circular initialization
}
}
}

18
infer/tests/codetoanalyze/java/nullsafe-default/issues.exp
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@ -14,13 +14,21 @@ codetoanalyze/java/nullsafe-default/CustomAnnotations.java, codetoanalyze.java.n
codetoanalyze/java/nullsafe-default/CustomAnnotations.java, codetoanalyze.java.nullsafe_default.CustomAnnotations$TestTextUtilsIsEmpty.textUtilsIsEmpty(java.lang.CharSequence):void, 1, ERADICATE_PARAMETER_NOT_NULLABLE, no_bucket, WARNING, [`TextUtils.isEmpty(...)` needs a non-null value in parameter 1 but argument `s` can be null. (Origin: method parameter s)]
codetoanalyze/java/nullsafe-default/CustomAnnotations.java, codetoanalyze.java.nullsafe_default.CustomAnnotations$TestTextUtilsIsEmpty.textUtilsIsEmpty(java.lang.CharSequence):void, 2, ERADICATE_NULLABLE_DEREFERENCE, no_bucket, WARNING, [The value of `s` in the call to `toString()` is nullable and is not locally checked for null. (Origin: method parameter s)]
codetoanalyze/java/nullsafe-default/CustomAnnotations.java, codetoanalyze.java.nullsafe_default.CustomAnnotations$TestTextUtilsIsEmpty.textUtilsNotIsEmpty(java.lang.CharSequence):void, 1, ERADICATE_PARAMETER_NOT_NULLABLE, no_bucket, WARNING, [`TextUtils.isEmpty(...)` needs a non-null value in parameter 1 but argument `s` can be null. (Origin: method parameter s)]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$ConditionalFieldInit.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$ConditionalFieldInit.o1` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitCircular.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$InitCircular.s` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitCircular.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$InitCircular.bad` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitCircular.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$InitCircular.stillBad` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitIfNull.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$InitIfNull.shouldBeGood_FIXME` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitWithOtherClass.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized,codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitWithOtherClass$OtherClass), 1, ERADICATE_FIELD_NOT_NULLABLE, no_bucket, WARNING, [Field `FieldNotInitialized$InitWithOtherClass.bad` can be null but is not declared `@Nullable`. (Origin: field FieldNotInitialized$InitWithOtherClass$OtherClass.nullable at line 166)]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitWithTheSameClass.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized,codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitWithTheSameClass), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$InitWithTheSameClass.bad` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$InitializationOrder.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized,int), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$InitializationOrder.o1` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$OnlyRead.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$OnlyRead.o` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$OnlyReadIndirect.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$OnlyReadIndirect.o1` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$Swap.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$Swap.o1` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$WriteItself.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$WriteItself.o` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized.<init>(), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized.a` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$ShouldInitializeInAllBranches.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized,int), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$ShouldInitializeInAllBranches.f3` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$ShouldInitializeInAllBranches.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized,int), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$ShouldInitializeInAllBranches.f5` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$ShouldInitializeInAllBranches.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized,int), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$ShouldInitializeInAllBranches.f2` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized$WriteItselfIsBAD.<init>(codetoanalyze.java.nullsafe_default.FieldNotInitialized), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized$WriteItselfIsBAD.bad` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized.<init>(), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `FieldNotInitialized.notNullIsBAD` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized.testNullifyFields():void, 3, ERADICATE_FIELD_NOT_NULLABLE, no_bucket, WARNING, [Field `FieldNotInitialized.nonnullIsOK` can be null but is not declared `@Nullable`. (Origin: null constant at line 47)]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.FieldNotInitialized.testNullifyFields():void, 4, ERADICATE_FIELD_NOT_NULLABLE, no_bucket, WARNING, [Field `FieldNotInitialized.injectIsOK` can be null but is not declared `@Nullable`. (Origin: null constant at line 48)]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.TestInitializerAnnotation.<init>(), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `TestInitializerAnnotation.dontInitAtAllIsBAD` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.TestInitializerAnnotation.<init>(), 0, ERADICATE_FIELD_NOT_INITIALIZED, no_bucket, WARNING, [Field `TestInitializerAnnotation.initInAnyOtherMethodIsBAD` is not initialized in the constructor and is not declared `@Nullable`]
codetoanalyze/java/nullsafe-default/FieldNotInitialized.java, codetoanalyze.java.nullsafe_default.TestInitializerAnnotation.build():java.lang.Object, 5, ERADICATE_CONDITION_REDUNDANT, no_bucket, WARNING, [The condition TestInitializerAnnotation.initInInitilizerMethod2IsOK is always true according to the existing annotations.]

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