Set Response.type to basic on same-origin requests

src/tests/fetch/fetch.html

@@ -3,6 +3,24 @@
   const promise1 = new Promise((resolve) => {
     fetch('http://127.0.0.1:9582/xhr/json')
     .then((res) => {
+      testing.expectEqual('cors', res.type);
+      return res.json()
+    })
+    .then((json) => {
+      resolve(json);
+    });
+  });
+
+  testing.async(promise1, (json) => {
+    testing.expectEqual({over: '9000!!!'}, json);
+  });
+</script>
+
+<script id=same-origin type=module>
+  const promise1 = new Promise((resolve) => {
+    fetch('http://localhost:9582/xhr/json')
+    .then((res) => {
+      testing.expectEqual('basic', res.type);
       return res.json()
     })
     .then((json) => {

src/tests/testing.js

@@ -95,7 +95,9 @@
   async function async(promise, cb) {
     const script_id = document.currentScript.id;
     const stack = new Error().stack;
+    this._captured = {script_id: script_id, stack: stack};
     const value = await promise;
+    // reset it, because await promise could change it.
     this._captured = {script_id: script_id, stack: stack};
     cb(value);
     this._captured = null;