1 files changed, 18 insertions, 0 deletions
diff --git a/tests/read_file_sync.ts b/tests/read_file_sync.ts
new file mode 100644
index 000000000..9e6c555c8
--- /dev/null
+++ b/tests/read_file_sync.ts
@@ -0,0 +1,18 @@
+// TODO(ry) Once unit_tests.js lands (#448) this file should be removed
+// and replaced with a faster version like was done in the prototype.
+// https://github.com/denoland/deno/blob/golang/tests.ts#L34-L45
+import * as deno from "deno";
+
+const data = deno.readFileSync("package.json");
+if (!data.byteLength) {
+  throw Error(
+    `Expected positive value for data.byteLength ${data.byteLength}`
+  );
+}
+const decoder = new TextDecoder("utf-8");
+const json = decoder.decode(data);
+const pkg = JSON.parse(json);
+if (pkg['devDependencies'] == null) {
+  throw Error("Expected a positive number of devDependencies");
+}
+console.log("ok");