1 files changed, 98 insertions, 0 deletions
diff --git a/testing/web-platform/tests/presentation-api/receiving-ua/support/stash.js b/testing/web-platform/tests/presentation-api/receiving-ua/support/stash.js
new file mode 100644
index 0000000000..eb63bb8623
--- /dev/null
+++ b/testing/web-platform/tests/presentation-api/receiving-ua/support/stash.js
@@ -0,0 +1,98 @@
+var Stash = function(inbound, outbound) {
+  this.stashPath = '/presentation-api/receiving-ua/support/stash.py?id=';
+  this.inbound = inbound;
+  this.outbound = outbound;
+}
+
+// initialize a stash on wptserve
+Stash.prototype.init = function() {
+  return Promise.all([
+    fetch(this.stashPath + this.inbound).then(response => {
+      return response.text();
+    }),
+    fetch(this.stashPath + this.outbound).then(response => {
+      return response.text();
+    })
+  ]);
+}
+
+// upload a test result to a stash on wptserve
+Stash.prototype.send = function(result) {
+  return fetch(this.stashPath + this.outbound, {
+    method: 'POST',
+    body: JSON.stringify({ type: 'data', data: result })
+  }).then(response => {
+    return response.text();
+  }).then(text => {
+    return text === 'ok' ? null : Promise.reject();
+  })
+};
+
+// upload a test result to a stash on wptserve via navigator.sendBeacon
+Stash.prototype.sendBeacon = function(result) {
+  if ('sendBeacon' in navigator) {
+    navigator.sendBeacon(this.stashPath + this.outbound, JSON.stringify({ type: 'data', data: result }));
+  }
+  // Note: The following could be discarded, since XHR in synchronous mode is now being deprecated.
+  else {
+    return new Promise(resolve, reject => {
+      const xhr = new XMLHttpRequest();
+      xhr.open('POST', this.stashPath + this.outbound, false);
+      xhr.send(JSON.stringify({ type: 'data', data: result }));
+    });
+  }
+};
+
+// wait until a test result is uploaded to a stash on wptserve
+Stash.prototype.receive = function() {
+  return new Promise((resolve, reject) => {
+    let intervalId;
+    const interval = 500; // msec
+    const polling = () => {
+      return fetch(this.stashPath + this.inbound).then(response => {
+        return response.text();
+      }).then(text => {
+        if (text) {
+          try {
+            const json = JSON.parse(text);
+            if (json.type === 'data')
+              resolve(json.data);
+            else
+              reject();
+          } catch(e) {
+            resolve(text);
+          }
+          clearInterval(intervalId);
+        }
+      });
+    };
+    intervalId = setInterval(polling, interval);
+  });
+};
+
+// reset a stash on wptserve
+Stash.prototype.stop = function() {
+  return Promise.all([
+    fetch(this.stashPath + this.inbound).then(response => {
+      return response.text();
+    }),
+    fetch(this.stashPath + this.outbound).then(response => {
+      return response.text();
+    })
+  ]).then(() => {
+    return Promise.all([
+      fetch(this.stashPath + this.inbound, {
+        method: 'POST',
+        body: JSON.stringify({ type: 'stop' })
+      }).then(response => {
+        return response.text();
+      }),
+      fetch(this.stashPath + this.outbound, {
+        method: 'POST',
+        body: JSON.stringify({ type: 'stop' })
+      }).then(response => {
+        return response.text();
+      })
+    ]);
+  });
+}