diff --git a/testutils/MAINTAINERS b/testutils/MAINTAINERS
new file mode 100644
index 0000000..012d27a
--- /dev/null
+++ b/testutils/MAINTAINERS
@@ -0,0 +1 @@
+Solomon Hykes <s@docker.com> (@shykes)
diff --git a/testutils/README.md b/testutils/README.md
new file mode 100644
index 0000000..a208a90
--- /dev/null
+++ b/testutils/README.md
@@ -0,0 +1,2 @@
+`testutils` is a collection of utility functions to facilitate the writing
+of tests. It is used in various places by the Docker test suite.
diff --git a/testutils/testutils.go b/testutils/testutils.go
new file mode 100644
index 0000000..4655e58
--- /dev/null
+++ b/testutils/testutils.go
@@ -0,0 +1,23 @@
+package testutils
+
+import (
+	"testing"
+	"time"
+)
+
+// Timeout calls f and waits for 100ms for it to complete.
+// If it doesn't, it causes the tests to fail.
+// t must be a valid testing context.
+func Timeout(t *testing.T, f func()) {
+	onTimeout := time.After(100 * time.Millisecond)
+	onDone := make(chan bool)
+	go func() {
+		f()
+		close(onDone)
+	}()
+	select {
+	case <-onTimeout:
+		t.Fatalf("timeout")
+	case <-onDone:
+	}
+}