Class AbstractMockChecker<T extends Annotation>

java.lang.Object

com.google.errorprone.bugpatterns.BugChecker

com.google.errorprone.bugpatterns.AbstractMockChecker<T>

All Implemented Interfaces:

BugChecker.MethodInvocationTreeMatcher, BugChecker.VariableTreeMatcher, Suppressible, Serializable

Direct Known Subclasses:

DoNotMockAutoValue, DoNotMockChecker

public abstract class AbstractMockChecker<T extends Annotation>
extends BugChecker
implements BugChecker.MethodInvocationTreeMatcher, BugChecker.VariableTreeMatcher

Helper for enforcing Annotations that disallow mocking.

Author:

amalloy@google.com (Alan Malloy)

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	AbstractMockChecker.MockForbidder	A policy for determining what classes should not be mocked.
static class	AbstractMockChecker.Reason	An explanation of what type should not be mocked, and the reason why.
static interface	AbstractMockChecker.TypeExtractor<T extends com.sun.source.tree.Tree>	An extension of Matcher to return, not just a boolean `matches`, but also extract some type information about the Tree of interest.

Nested classes/interfaces inherited from class com.google.errorprone.bugpatterns.BugChecker

BugChecker.AnnotatedTypeTreeMatcher, BugChecker.AnnotationTreeMatcher, BugChecker.ArrayAccessTreeMatcher, BugChecker.ArrayTypeTreeMatcher, BugChecker.AssertTreeMatcher, BugChecker.AssignmentTreeMatcher, BugChecker.BinaryTreeMatcher, BugChecker.BlockTreeMatcher, BugChecker.BreakTreeMatcher, BugChecker.CaseTreeMatcher, BugChecker.CatchTreeMatcher, BugChecker.ClassTreeMatcher, BugChecker.CompilationUnitTreeMatcher, BugChecker.CompoundAssignmentTreeMatcher, BugChecker.ConditionalExpressionTreeMatcher, BugChecker.ContinueTreeMatcher, BugChecker.DoWhileLoopTreeMatcher, BugChecker.EmptyStatementTreeMatcher, BugChecker.EnhancedForLoopTreeMatcher, BugChecker.ExpressionStatementTreeMatcher, BugChecker.ForLoopTreeMatcher, BugChecker.IdentifierTreeMatcher, BugChecker.IfTreeMatcher, BugChecker.ImportTreeMatcher, BugChecker.InstanceOfTreeMatcher, BugChecker.IntersectionTypeTreeMatcher, BugChecker.LabeledStatementTreeMatcher, BugChecker.LambdaExpressionTreeMatcher, BugChecker.LiteralTreeMatcher, BugChecker.MemberReferenceTreeMatcher, BugChecker.MemberSelectTreeMatcher, BugChecker.MethodInvocationTreeMatcher, BugChecker.MethodTreeMatcher, BugChecker.ModifiersTreeMatcher, BugChecker.NewArrayTreeMatcher, BugChecker.NewClassTreeMatcher, BugChecker.ParameterizedTypeTreeMatcher, BugChecker.ParenthesizedTreeMatcher, BugChecker.PrimitiveTypeTreeMatcher, BugChecker.ReturnTreeMatcher, BugChecker.SuppressibleTreePathScanner<R,P>, BugChecker.SwitchTreeMatcher, BugChecker.SynchronizedTreeMatcher, BugChecker.ThrowTreeMatcher, BugChecker.TryTreeMatcher, BugChecker.TypeCastTreeMatcher, BugChecker.TypeParameterTreeMatcher, BugChecker.UnaryTreeMatcher, BugChecker.UnionTypeTreeMatcher, BugChecker.VariableTreeMatcher, BugChecker.WhileLoopTreeMatcher, BugChecker.WildcardTreeMatcher

Field Summary

Fields

Modifier and Type	Field	Description
static final AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree>	MOCKING_METHOD	A TypeExtractor for method invocations that create a mock using Mockito.mock, Mockito.spy, or EasyMock.create[...]Mock, extracting the type being mocked.

Constructor Summary

Constructors

Constructor	Description
AbstractMockChecker(AbstractMockChecker.TypeExtractor<com.sun.source.tree.VariableTree> varExtractor, AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree> methodExtractor, Class<T> annotationClass, Function<T,String> getValueFunction)

Method Summary

Modifier and Type	Method	Description
static AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree>	extractClassArg(Matcher<com.sun.source.tree.MethodInvocationTree> m)	Produces an extractor which, if the tree matches, extracts the type of the first argument whose type is Class (preserving its <T> type parameter, if it has one}.
static AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree>	extractFirstArg(Matcher<com.sun.source.tree.MethodInvocationTree> m)	Produces an extractor which, if the tree matches, extracts the type of the first argument to the method invocation.
static <T extends com.sun.source.tree.Tree> AbstractMockChecker.TypeExtractor<T>	extractType(Matcher<T> m)	Produces an extractor which, if the tree matches, extracts the type of that tree, as given by ASTHelpers.getType(Tree).
static AbstractMockChecker.TypeExtractor<com.sun.source.tree.VariableTree>	fieldAnnotatedWithOneOf(Stream<String> annotationClasses)	Creates a TypeExtractor that extracts the type of a class field if that field is annotated with any one of the given annotations.
protected AbstractMockChecker.MockForbidder	forbidder()	Produce a MockForbidder to use when looking for disallowed mocks, in addition to the built-in checks for Annotations of type T.
final Description	matchMethodInvocation(com.sun.source.tree.MethodInvocationTree tree, VisitorState state)
final Description	matchVariable(com.sun.source.tree.VariableTree tree, VisitorState state)

Methods inherited from class com.google.errorprone.bugpatterns.BugChecker

allNames, buildDescription, buildDescription, buildDescription, canonicalName, customSuppressionAnnotations, defaultSeverity, describeMatch, describeMatch, describeMatch, describeMatch, describeMatch, describeMatch, disableable, equals, hashCode, isSuppressed, isSuppressed, isSuppressed, isSuppressed, linkUrl, message, supportsSuppressWarnings, suppressedByAnyOf, suppressedRegions

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.google.errorprone.matchers.Suppressible

allNames, canonicalName, customSuppressionAnnotations, supportsSuppressWarnings, suppressedByAnyOf

Field Details

MOCKING_METHOD

public static final AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree> MOCKING_METHOD

A TypeExtractor for method invocations that create a mock using Mockito.mock, Mockito.spy, or EasyMock.create[...]Mock, extracting the type being mocked.

Constructor Details

AbstractMockChecker

public AbstractMockChecker(AbstractMockChecker.TypeExtractor<com.sun.source.tree.VariableTree> varExtractor,
 AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree> methodExtractor,
 Class<T> annotationClass,
 Function<T,String> getValueFunction)

Method Details

forbidder

protected AbstractMockChecker.MockForbidder forbidder()

Produce a MockForbidder to use when looking for disallowed mocks, in addition to the built-in checks for Annotations of type T.

This method will be called at most once for each instance of AbstractMockChecker, but of course the returned object's forbidReason method may be called many times.

The default implementation forbids nothing.

extractType

public static <T extends com.sun.source.tree.Tree>
AbstractMockChecker.TypeExtractor<T> extractType(Matcher<T> m)

Produces an extractor which, if the tree matches, extracts the type of that tree, as given by ASTHelpers.getType(Tree).

extractFirstArg

public static AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree> extractFirstArg(Matcher<com.sun.source.tree.MethodInvocationTree> m)

Produces an extractor which, if the tree matches, extracts the type of the first argument to the method invocation.

extractClassArg

public static AbstractMockChecker.TypeExtractor<com.sun.source.tree.MethodInvocationTree> extractClassArg(Matcher<com.sun.source.tree.MethodInvocationTree> m)

Produces an extractor which, if the tree matches, extracts the type of the first argument whose type is Class (preserving its <T> type parameter, if it has one}.

Parameters:

m - the matcher to use. It is an error for this matcher to succeed on any Tree that does not include at least one argument of type Class; if such a matcher is provided, the behavior of the returned Extractor is undefined.

fieldAnnotatedWithOneOf

public static AbstractMockChecker.TypeExtractor<com.sun.source.tree.VariableTree> fieldAnnotatedWithOneOf(Stream<String> annotationClasses)

Creates a TypeExtractor that extracts the type of a class field if that field is annotated with any one of the given annotations.

matchMethodInvocation

public final Description matchMethodInvocation(com.sun.source.tree.MethodInvocationTree tree,
 VisitorState state)

Specified by:

matchMethodInvocation in interface BugChecker.MethodInvocationTreeMatcher

matchVariable

public final Description matchVariable(com.sun.source.tree.VariableTree tree,
 VisitorState state)

Specified by:

matchVariable in interface BugChecker.VariableTreeMatcher