BaseliningMatcher.java
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* Copyright (C) 2020 wcm.io
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* Licensed under the Apache License, Version 2.0 (the "License");
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package io.wcm.qa.glnm.hamcrest.baseline;
import java.util.function.Function;
import java.util.function.Supplier;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import io.wcm.qa.glnm.persistence.SamplePersistence;
class BaseliningMatcher<M, S> extends BaselineMatcher<M, S> {
private Matcher<M> internalMatcher;
private Function<S, Matcher<M>> matcherProducer;
protected BaseliningMatcher(
Function<S, Matcher<M>> matcherProducer,
Supplier<SamplePersistence<S>> persistenceSupplier,
Function<M, S> baselineTransformer) {
super(persistenceSupplier, baselineTransformer);
setMatcherProducer(matcherProducer);
}
/** {@inheritDoc} */
@Override
public void describeTo(Description description) {
getInternalMatcher().describeTo(description);
}
protected void setMatcherProducer(Function<S, Matcher<M>> matcherProducer) {
this.matcherProducer = matcherProducer;
}
@Override
protected void describeMismatchSafely(M item, Description mismatchDescription) {
getInternalMatcher().describeMismatch(item, mismatchDescription);
}
protected Matcher<M> getInternalMatcher() {
if (internalMatcher == null) {
internalMatcher = produceMatcher();
}
return internalMatcher;
}
protected Function<S, Matcher<M>> getMatcherProducer() {
return matcherProducer;
}
@Override
protected boolean matchesBaseline(M item) {
return getInternalMatcher().matches(item);
}
protected Matcher<M> produceMatcher() {
return matcherProducer.apply(baseline());
}
}