1 files changed, 19 insertions, 0 deletions
diff --git a/tests/unistd/io.js b/tests/unistd/io.js
new file mode 100644
index 00000000..b129af44
--- /dev/null
+++ b/tests/unistd/io.js
@@ -0,0 +1,19 @@
+(function() {
+  var devicePayload = [65, 66, 67, 68];
+  FS.createDevice('/', 'device', function() {
+    if (devicePayload.length) {
+      return devicePayload.shift();
+    } else {
+      return null;
+    }
+  }, function(arg) {
+    print("TO DEVICE: " + arg);
+  });
+  FS.createDevice('/', 'broken-device', function() {
+    throw new Error('Broken device input.');
+  }, function(arg) {
+    throw new Error('Broken device output.');
+  });
+  FS.createDataFile('/', 'file', '1234567890', true, true);
+  FS.createFolder('/', 'folder', true, true);
+})();