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99 lines
2.5 KiB
99 lines
2.5 KiB
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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package codetoanalyze.java.infer;
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import com.google.common.base.Preconditions;
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public class PreconditionsExample {
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Integer i1;
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/*
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* Note: Although the Guava checkNotNull method throws a NullPointerException when a given
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* value x is null, Pulse will simply try to go ahead assuming that x != null.
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* This means that it will not report NPEs on values passed to checkNotNull.
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* The analogous approach has been taken for checkState and checkArgument.
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*/
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void testCheckNotNullOnNullValueOk() {
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PreconditionsExample x = null;
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// This should not be reported due to the use of checkNotNull
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Preconditions.checkNotNull(x);
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Integer i1 = x.i1;
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}
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void testCheckNotNullOnNonNullValueOk() {
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PreconditionsExample x = new PreconditionsExample();
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x.i1 = new Integer(10);
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PreconditionsExample y = Preconditions.checkNotNull(x);
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// This should not cause bug, as y.i1 should be equal to x.i1
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if (!y.i1.equals(10)) {
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Object o = null;
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o.toString();
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}
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}
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void testCheckNotNullPassingFurtherArgsOk() {
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Object x = null;
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Preconditions.checkNotNull(x, "errorMsg");
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x.toString();
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}
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void testCheckNotNullOtherDerefOk() {
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Object x = null;
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Object y = null;
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Preconditions.checkNotNull(x, "errorMsg");
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y.toString();
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}
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void testCheckNotNullArgOk(Object x) {
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Object y = null;
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Preconditions.checkNotNull(x);
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x.toString();
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}
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void testCheckNotNullArgBad(Object x) {
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Object y = null;
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Preconditions.checkNotNull(x);
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y.toString();
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}
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void checkStateConditionSatBad() {
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PreconditionsExample x = new PreconditionsExample();
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PreconditionsExample y = null;
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x.i1 = 1000;
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Preconditions.checkState(x.i1.equals(1000));
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y.toString();
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}
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void checkStateConditionUnsatOk() {
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PreconditionsExample x = new PreconditionsExample();
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PreconditionsExample y = null;
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x.i1 = 1000;
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Preconditions.checkState(x.i1.equals(100), "errorMsg");
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y.toString();
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}
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void checkArgumentUnsatOk() {
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int age = -18;
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Object x = null;
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Preconditions.checkArgument(age > 0);
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x.getClass();
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}
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void checkAgeOver18(int age) {
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Preconditions.checkArgument(age > 18, "errorMsg");
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}
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void checkArgumentSatBad() {
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int age = 20;
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Object x = null;
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checkAgeOver18(age);
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x.getClass();
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}
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}
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