diff --git a/test-deps/mock.js b/test-deps/mock.js
index 698f86bc..81304cbe 100644
--- a/test-deps/mock.js
+++ b/test-deps/mock.js
@@ -227,6 +227,14 @@ this.mock = (function (global) {
 		function Request() {
 			this.$headers = {}
 
+			this.$resolve = function (data, status) {
+				if (data === undefined) data = this // eslint-disable-line
+				this.responseText = JSON.stringify(data)
+				this.readyState = 4
+				this.status = status || 200
+				return this
+			}
+
 			this.setRequestHeader = function (key, value) {
 				this.$headers[key] = value
 			}
@@ -237,9 +245,6 @@ this.mock = (function (global) {
 			}
 
 			this.send = function () {
-				this.responseText = JSON.stringify(this)
-				this.readyState = 4
-				this.status = 200
 				Request.$instances.push(this)
 			}
 		}
diff --git a/test/mithril.mount.js b/test/mithril.mount.js
index fa68d11f..d5f606d9 100644
--- a/test/mithril.mount.js
+++ b/test/mithril.mount.js
@@ -648,7 +648,7 @@ describe("m.mount()", function () {
 	})
 
 	function resolveXhr() {
-		mock.XMLHttpRequest.$instances.pop().onreadystatechange()
+		mock.XMLHttpRequest.$instances.pop().$resolve().onreadystatechange()
 		mock.requestAnimationFrame.$resolve()
 	}
 
diff --git a/test/mithril.request.js b/test/mithril.request.js
index d432ab43..945164dc 100644
--- a/test/mithril.request.js
+++ b/test/mithril.request.js
@@ -4,6 +4,7 @@ describe("m.request()", function () {
 	// Much easier to read
 	function resolve() {
 		var xhr = mock.XMLHttpRequest.$instances.pop()
+		xhr.$resolve.apply(xhr, arguments)
 		xhr.onreadystatechange()
 		return xhr
 	}
@@ -381,4 +382,21 @@ describe("m.request()", function () {
 		// For good measure
 		mock.requestAnimationFrame.$resolve()
 	})
+
+	it("can use a config correctly", function () {
+		var config = sinon.spy()
+		var result = m.prop()
+		var error = sinon.spy
+		var opts = {
+			method: "GET",
+			url: "/test",
+			config: config
+		}
+		m.request(opts).then(result, error)
+		var xhr = resolve({foo: "bar"})
+
+		expect(config).to.be.calledWithExactly(xhr, opts)
+		expect(result()).to.eql({foo: "bar"})
+		expect(error).to.not.be.called
+	})
 })