From 0726c6c91f0414e457eb77862e90bbcc2b1bc35f Mon Sep 17 00:00:00 2001
From: Marnes <marnick.leau@gmail.com>
Date: Wed, 16 May 2018 20:25:01 +0200
Subject: [PATCH] FeatureMatcher factory method for java 8 users

---
 .../src/main/java/org/hamcrest/FeatureMatcher.java | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hamcrest-core/src/main/java/org/hamcrest/FeatureMatcher.java b/hamcrest-core/src/main/java/org/hamcrest/FeatureMatcher.java
index 385cf999..5a57f50a 100644
--- a/hamcrest-core/src/main/java/org/hamcrest/FeatureMatcher.java
+++ b/hamcrest-core/src/main/java/org/hamcrest/FeatureMatcher.java
@@ -51,4 +51,18 @@ public final void describeTo(Description description) {
     description.appendText(featureDescription).appendText(" ")
                .appendDescriptionOf(subMatcher);
   }
+
+  public static <T, U> FeatureMatcher<T, U> ofFunction(final Mapper<T, U> mapper, Matcher<? super U> matcher, String featureDescription, String featureName) {
+  	return new FeatureMatcher<T, U>(matcher, featureDescription, featureName) {
+	  @Override
+	  protected U featureValueOf(T actual) {
+	    return mapper.map(actual);
+	  }
+	};
+  }
+
+  // TODO java 8 @FunctionalInterface
+  public interface Mapper<T, U> {
+  	U map(T t);
+  }
 }