Implement a test for custom matchers.

index.js

@@ -19,7 +19,7 @@ const RouterCtx = createContext();
 export const buildRouter = (options = {}) => {
   return {
     history: options.history || makeHistory(),
-    matchFn: options.matchFn || makeMatcher()
+    matcher: options.matcher || makeMatcher()
   };
 };
 
@@ -72,7 +72,7 @@ export const useRoute = pattern => {
   const router = useRouter();
   const [path] = useLocation();
 
-  return router.matchFn(pattern, path);
+  return router.matcher(pattern, path);
 };
 
 export const Route = props => {

test/custom-matcher.test.js

@@ -0,0 +1,41 @@
+import React from "react";
+import TestRenderer from "react-test-renderer";
+
+import { Router, Route } from "../index.js";
+import memoryHistory from "./memory-history";
+
+const customMatcher = (pattern, path) => {
+  const reversed = path
+    .replace(/^\//, "")
+    .split("")
+    .reverse()
+    .join("");
+
+  return [pattern.replace(/^\//, "") === reversed, {}];
+};
+
+const routeMatches = (pattern, path) => {
+  const history = memoryHistory(path);
+
+  const instance = TestRenderer.create(
+    <Router history={history} matcher={customMatcher}>
+      <Route path={pattern}>
+        <h1>it worked!</h1>
+      </Route>
+    </Router>
+  ).root;
+
+  let phrase = null;
+
+  try {
+    phrase = instance.findByType("h1").props.children;
+  } catch (e) {}
+
+  return phrase === "it worked!";
+};
+
+it("accepts plain children", () => {
+  expect(routeMatches("/foo", "/oof")).toBe(true);
+  expect(routeMatches("/xxx", "/xxx")).toBe(true);
+  expect(routeMatches("/path", "/path")).toBe(false);
+});