2 files changed, 11 insertions, 9 deletions
diff --git a/tools/wpt/runner.ts b/tools/wpt/runner.ts
index 0cf625f01..3eb476fc9 100644
--- a/tools/wpt/runner.ts
+++ b/tools/wpt/runner.ts
@@ -1,6 +1,6 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 import { delay, join, readLines, ROOT_PATH, toFileUrl } from "../util.js";
-import { assert, ManifestTestOptions, release, runPy } from "./utils.ts";
+import { assert, denoBinary, ManifestTestOptions, runPy } from "./utils.ts";
 import { DOMParser } from "https://deno.land/x/deno_dom@v0.1.3-alpha2/deno-dom-wasm.ts";
 
 export async function runWithTestUtil<T>(
@@ -88,7 +88,7 @@ export async function runSingleTest(
 
   const proc = Deno.run({
     cmd: [
-      join(ROOT_PATH, `./target/${release ? "release" : "debug"}/deno`),
+      denoBinary(),
       "run",
       "-A",
       "--unstable",
diff --git a/tools/wpt/utils.ts b/tools/wpt/utils.ts
index 3b1eb9965..0eb9a89e7 100644
--- a/tools/wpt/utils.ts
+++ b/tools/wpt/utils.ts
@@ -12,13 +12,19 @@ export const {
   rebuild,
   ["--"]: rest,
   ["auto-config"]: autoConfig,
+  binary,
 } = parse(Deno.args, {
   "--": true,
   boolean: ["quiet", "release", "no-interactive"],
-  string: ["json", "wptreport"],
+  string: ["json", "wptreport", "binary"],
 });
 
-/// PAGE ROOT
+export function denoBinary() {
+  if (binary) {
+    return binary;
+  }
+  return join(ROOT_PATH, `./target/${release ? "release" : "debug"}/deno`);
+}
 
 /// WPT TEST MANIFEST
 
@@ -164,11 +170,7 @@ export async function generateRunInfo(): Promise<unknown> {
   const revision = (new TextDecoder().decode(await proc.output())).trim();
   proc.close();
   const proc2 = Deno.run({
-    cmd: [
-      join(ROOT_PATH, `./target/${release ? "release" : "debug"}/deno`),
-      "eval",
-      "console.log(JSON.stringify(Deno.version))",
-    ],
+    cmd: [denoBinary(), "eval", "console.log(JSON.stringify(Deno.version))"],
     cwd: join(ROOT_PATH, "test_util", "wpt"),
     stdout: "piped",
   });