@Test
public void uiField() throws Exception {
compilationHelper
.addSourceLines(
"com/google/gwt/uibinder/client/UiField.java",
"package com.google.gwt.uibinder.client;",
"public @interface UiField {}")
.addSourceLines("Box.java", "public class Box<T> {", " T get() { return null; }", "}")
.addSourceLines(
"Widget.java",
"import com.google.gwt.uibinder.client.UiField;",
"public class Widget {",
" @UiField Box<Boolean> l;",
"}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"class Test {",
" Widget w;",
" void m(Iterable<Boolean> xs) {",
" // BUG: Diagnostic contains: when((Object) w.l.get()).thenReturn(null);",
" when(w.l.get()).thenReturn(null);",
" }",
"}")
.doTest();
}
@Test
public void imported() throws Exception {
compilationHelper
.addSourceLines(
"pkg/Bound.java",
"package pkg;",
"public class Bound {",
" public static class Inner {}",
" public static class Sub extends Inner {}",
"}")
.addSourceLines(
"Foo.java",
"import pkg.Bound;",
"public class Foo {",
" public <T extends Bound.Inner> T f(Iterable<T> xs) { return xs.iterator().next(); }",
"}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"import org.mockito.Mock;",
"class Test {",
" final int ONE = 1;",
" final int TWO = 1;",
" @Mock(answer = RETURNS_SMART_NULLS) Foo l;",
" void m(Iterable<pkg.Bound.Sub> xs) {",
" // BUG: Diagnostic contains: when((Bound.Inner) l.f(xs)).thenReturn(null);",
" when(l.f(xs)).thenReturn(null);",
" }",
"}")
.doTest();
}
@Test
public void testLocked() throws Exception {
compilationHelper
.addSourceLines(
"threadsafety/Test.java",
"package threadsafety;",
"import javax.annotation.concurrent.GuardedBy;",
"import java.util.concurrent.locks.Lock;",
"class Test {",
" final Lock mu = null;",
" final Lock lock = null;",
" @GuardedBy(\"lock\")",
" int x;",
" void m() {",
" mu.lock();",
" // BUG: Diagnostic contains: []",
" x++;",
" try {",
" // BUG: Diagnostic contains:",
" // [(SELECT (THIS) mu)]",
" x++;",
" } finally {",
" mu.unlock();",
" }",
" // BUG: Diagnostic contains: []",
" x++;",
" }",
"}")
.doTest();
}
// regression test for #418
@Test
public void typeParameter() {
compilationHelper
.addSourceLines(
"Nullable.java",
"import java.lang.annotation.ElementType;",
"import java.lang.annotation.Retention;",
"import java.lang.annotation.RetentionPolicy;",
"import java.lang.annotation.Target;",
"@Retention(RetentionPolicy.RUNTIME)",
"@Target(ElementType.TYPE_USE)",
"public @interface Nullable {}")
.addSourceLines(
"Test.java",
"class Test {",
" // BUG: Diagnostic contains:",
" @Nullable int x;",
" // BUG: Diagnostic contains:",
" @Nullable int f() {",
" return 42;",
" }",
" <@Nullable T> int g() {",
" return 42;",
" }",
" int @Nullable [] y;",
"}")
.doTest();
}
@Test
public void interfaceMethod() {
compilationHelper
.addSourceLines(
"Test.java",
// TODO(b/21633565): force line break
"interface Test {",
" void f(int y);",
"}")
.doTest();
}
@Test
public void abstractMethod() {
compilationHelper
.addSourceLines(
"Test.java",
// TODO(b/21633565): force line break
"abstract class Test {",
" abstract void f(int y);",
"}")
.doTest();
}
@Test
public void unnecessaryFinalNativeMethod() {
compilationHelper
.addSourceLines(
"Test.java",
"class Test {",
" // BUG: Diagnostic contains: native void f(int y);",
" native void f(final int y);",
"}")
.doTest();
}
@Test
public void finalField() {
compilationHelper
.addSourceLines(
"Test.java",
// TODO(b/21633565): force line break
"class Test {",
" public final int x = 42;",
"}")
.doTest();
}
@Test
public void negativeVoid() {
compilationHelper
.addSourceLines(
"Test.java",
"import javax.annotation.Nullable;",
"class Test {",
" @Nullable void f() {}",
"}")
.doTest();
}
@Test
public void varField() {
compilationHelper
.addSourceLines(
"Test.java",
"import com.google.errorprone.annotations.Var;",
"class Test {",
" @Var public int x = 42;",
"}")
.doTest();
}
@Test
public void negativeParam() {
compilationHelper
.addSourceLines(
"Test.java",
// TODO(b/21633565): force line break
"class Test {",
" public void x(int y) {",
" }",
"}")
.doTest();
}
@Test
public void enhancedFor() {
compilationHelper
.addSourceLines(
"Test.java",
"class Test {",
" void f (Iterable<String> xs) {",
" for (String x : xs) {",
" }",
" }",
"}")
.doTest();
}
@Test
public void forLoop() {
compilationHelper
.addSourceLines(
"Test.java",
"class Test {",
" {",
" for (int i = 0; i < 10; i++) {",
" }",
" }",
"}")
.doTest();
}
@Test
public void varParam() {
compilationHelper
.addSourceLines(
"Test.java",
"import com.google.errorprone.annotations.Var;",
"class Test {",
" public void x(@Var int y) {",
" y++;",
" }",
"}")
.doTest();
}
@Test
public void positiveParam() {
compilationHelper
.addSourceLines(
"Test.java",
"class Test {",
" // BUG: Diagnostic contains: public void x(@Var int y) {",
" public void x(int y) {",
" y++;",
" }",
"}")
.doTest();
}
@Test
public void finalLocal7() {
compilationHelper
.addSourceLines(
"Test.java",
// TODO(b/21633565): force line break
"class Test {",
" public void x() {",
" final int y = 0;",
" }",
"}")
.setArgs(Arrays.asList("-source", "7", "-target", "7"))
.doTest();
}
@Test
public void finalLocal8() {
compilationHelper
.addSourceLines(
"Test.java",
"class Test {",
" public void x() {",
" // BUG: Diagnostic contains: /*START*/ int y = 0;",
" /*START*/ final int y = 0;",
" }",
"}")
.setArgs(Arrays.asList("-source", "8", "-target", "8"))
.doTest();
}
@Test
public void varInitializedWithUnsupportedAnswer() throws Exception {
compilationHelper
.addSourceLines("Box.java", "public class Box<T> {", " T f() { return null; }", "}")
.addSourceLines(
"Test.java",
"import org.mockito.Mockito;",
"class Test {",
" Box<Boolean> box = Mockito.mock(Box.class, Mockito.RETURNS_SMART_NULLS);",
" void m() {",
" // BUG: Diagnostic contains: when((Object) box.f()).thenReturn(false);",
" Mockito.when(box.f()).thenReturn(false);",
" }",
"}")
.doTest();
}
@Test
public void testSynchronizedMethod() throws Exception {
compilationHelper
.addSourceLines(
"threadsafety/Test.java",
"package threadsafety;",
"import javax.annotation.concurrent.GuardedBy;",
"import java.util.concurrent.locks.Lock;",
"class Test {",
" @GuardedBy(\"this\")",
" int x;",
" synchronized void m() {",
" // BUG: Diagnostic contains: [(THIS)]",
" x++;",
" }",
"}")
.doTest();
}
@Test
public void mockedFieldInstantiationOfGenericType() throws Exception {
compilationHelper
.addSourceLines("Super.java", "public class Super<T> {", " T f() { return null; }", "}")
.addSourceLines("Sub.java", "public class Sub extends Super<Boolean> {", "}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"import org.mockito.Mock;",
"class Test {",
" @Mock(answer = RETURNS_SMART_NULLS) Super<Boolean> s;",
" void m() {",
" // BUG: Diagnostic contains: when((Object) s.f()).thenReturn(false);",
" when(s.f()).thenReturn(false);",
" }",
"}")
.doTest();
}
@Test
public void chainedCallOnUnsupportedMock() throws Exception {
compilationHelper
.addSourceLines(
"Foo.java", "public class Foo {", " Bar<Boolean> bar() { return null; }", "}")
.addSourceLines("Bar.java", "public class Bar<T> {", " T get() { return null; }", "}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"import org.mockito.Mock;",
"class Test {",
" @Mock(answer = RETURNS_SMART_NULLS) Foo f;",
" void m() {",
" // BUG: Diagnostic contains: when((Object) f.bar().get()).thenReturn(false);",
" when(f.bar().get()).thenReturn(false);",
" }",
"}")
.doTest();
}
@Test
public void defaultAnswerOk() throws Exception {
compilationHelper
.addSourceLines(
"Foo.java",
"public class Foo {",
" public <T> T f(Iterable<T> xs) { return xs.iterator().next(); }",
"}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"import org.mockito.Mock;",
"class Test {",
" @Mock Foo l;",
" void m(Iterable<Boolean> xs) {",
" when(l.f(xs)).thenReturn(false);",
" }",
"}")
.doTest();
}
@Test
public void testSynchronizedClass() throws Exception {
compilationHelper
.addSourceLines(
"threadsafety/Test.java",
"package threadsafety;",
"import javax.annotation.concurrent.GuardedBy;",
"class Lock {}",
"class Test {",
" final Lock mu = new Lock();",
" @GuardedBy(\"this\")",
" int x;",
" void m() {",
" synchronized (Lock.class) {",
" // BUG: Diagnostic contains: [(CLASS_LITERAL threadsafety.Lock)]",
" x++;",
" }",
" }",
"}")
.doTest();
}
@Test
public void testLockMethodEnclosingAccess() throws Exception {
compilationHelper
.addSourceLines(
"threadsafety/Test.java",
"package threadsafety;",
"import javax.annotation.concurrent.GuardedBy;",
"import com.google.errorprone.annotations.concurrent.LockMethod;",
"import com.google.errorprone.annotations.concurrent.UnlockMethod;",
"import java.util.concurrent.locks.Lock;",
"class Outer {",
" Lock lock;",
" class Inner {",
" @GuardedBy(\"lock\")",
" int x;",
" ",
" @LockMethod(\"lock\")",
" void lock() {",
" lock.lock();",
" }",
" ",
" @UnlockMethod(\"lock\")",
" void unlock() {",
" lock.unlock();",
" }",
" ",
" void m(Inner i) {",
" i.lock();",
" try {",
" // BUG: Diagnostic contains:",
" // [(SELECT (SELECT (LOCAL_VARIABLE i) outer$threadsafety.Outer) lock)]",
" i.x++;",
" } finally {",
" i.unlock();",
" }",
" }",
" }",
"}")
.doTest();
}
@Test
public void testSynchronizedField() throws Exception {
compilationHelper
.addSourceLines(
"threadsafety/Test.java",
"package threadsafety;",
"import javax.annotation.concurrent.GuardedBy;",
"class Lock { final Object lock = null; }",
"class Test {",
" final Lock mu = new Lock();",
" @GuardedBy(\"this\")",
" int x;",
" void m() {",
" synchronized (mu.lock) {",
" // BUG: Diagnostic contains:",
" // [(SELECT (SELECT (THIS) mu) lock)]",
" x++;",
" }",
" }",
"}")
.doTest();
}
@Test
public void mockAnnotationWithUnsupportedAnswer() throws Exception {
compilationHelper
.addSourceLines(
"Foo.java",
"public class Foo {",
" public <T> T f(Iterable<T> xs) { return xs.iterator().next(); }",
"}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"import org.mockito.Mock;",
"class Test {",
" @Mock(answer = RETURNS_SMART_NULLS) Foo l;",
" void m(Iterable<Boolean> xs) {",
" // BUG: Diagnostic contains: when((Object) l.f(xs)).thenReturn(false);",
" when(l.f(xs)).thenReturn(false);",
" }",
"}")
.doTest();
}
@Test
public void erasureIsNotObject() throws Exception {
compilationHelper
.addSourceLines(
"Super.java",
"public class Super<T extends Boolean> {",
" T f() { return null; }",
"}")
.addSourceLines("Sub.java", "public class Sub extends Super<Boolean> {", "}")
.addSourceLines(
"Test.java",
"import static org.mockito.Mockito.when;",
"import static org.mockito.Answers.RETURNS_SMART_NULLS;",
"import org.mockito.Mock;",
"class Test {",
" @Mock(answer = RETURNS_SMART_NULLS) Super<Boolean> s;",
" void m() {",
" when(s.f()).thenReturn(false);",
" }",
"}")
.doTest();
}
@Test
public void testTwoInstances() throws Exception {
compilationHelper
.addSourceLines(
"threadsafety/Test.java",
"package threadsafety;",
"import javax.annotation.concurrent.GuardedBy;",
"import java.util.concurrent.locks.Lock;",
"class Test {",
" final Lock lock = null;",
" @GuardedBy(\"lock\")",
" int x;",
" void m(Lock lock2) {",
" lock.lock();",
" lock2.lock();",
" try {",
" // BUG: Diagnostic contains:",
" // [(LOCAL_VARIABLE lock2), (SELECT (THIS) lock)]",
" x++;",
" } finally { lock.unlock(); lock2.unlock(); }",
" }",
"}")
.doTest();
}
// fields are ignored
@Test
public void nonFinalField() {
compilationHelper
.addSourceLines("Test.java", "class Test {", " public int x = 42;", "}")
.doTest();
}