uk.co.probablyfine.matchers.function.SingleArgumentDescribableFunctionalInterface Maven / Gradle / Ivy

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Hamcrest matchers for JDK8's Optionals and Streams, and the java.time package

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package uk.co.probablyfine.matchers.function;

import java.lang.invoke.MethodType;

interface SingleArgumentDescribableFunctionalInterface extends SerializedLambdaResolvable {

    default String getArgumentDescription() {
        MethodType methodType = MethodType.fromMethodDescriptorString(asSerializedLambda().getInstantiatedMethodType(), getClass().getClassLoader());
        return methodType.parameterType(0).getSimpleName();
    }

}