diff --git a/integration-test/end-to-end.js b/integration-test/end-to-end.js
index b419ece..cf12e58 100644
--- a/integration-test/end-to-end.js
+++ b/integration-test/end-to-end.js
@@ -77,6 +77,82 @@ const testUpdateMessage = async (channel, token) => {
   return result;
 };
 
+const testUploadFile = async (channel, token) => {
+  // WIP!!!
+  // 1. Get this test to work
+  // 2. Move the code to the src/ section
+  // 3. Add integration test
+
+  return new Promise((resolve, reject) => {
+    const https = require("https");
+    const fs = require("fs");
+
+    let options = {
+      method: "POST",
+      hostname: "slack.com",
+      path: "/api/files.upload",
+      headers: {
+        Authorization: "Bearer " + token,
+      },
+    };
+
+    const req = https.request(options, (res) => {
+      let chunks = [];
+
+      res.on("data", (chunk) => {
+        chunks.push(chunk);
+      });
+
+      res.on("end", (chunk) => {
+        let body = Buffer.concat(chunks);
+        console.log(body.toString());
+      });
+
+      res.on("error", (error) => {
+        console.error(error);
+      });
+    });
+
+    /*let postData = `
+    ----------------------------650979185122712208150351
+    Content-Disposition: form-data; name="file"; filename="one-does-not-simply.jpg"
+    Content-Type: image/jpeg
+
+    ${fs.readFileSync(__dirname + "/one-does-not-simply.jpg").toString("ascii")}
+    ----------------------------650979185122712208150351
+    Content-Disposition: form-data; name="initial_comment"
+
+    Wisdom of the Masters
+    ----------------------------650979185122712208150351
+    Content-Disposition: form-data; name="channels"
+
+    CPPUV5KU0
+    ----------------------------650979185122712208150351--
+    `;
+
+    fs.writeFileSync("temp-ascii.txt", postData);
+
+    req.setHeader(
+      "content-type",
+      "multipart/form-data; boundary=--------------------------650979185122712208150351"
+    );*/
+
+    let postData =
+      '------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name="file"; filename="one-does-not-simply.jpg"\r\nContent-Type: "image/jpeg"\r\n\r\n' +
+      fs.readFileSync(__dirname + "/one-does-not-simply.jpg") +
+      '\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name="initial_comment"\r\n\r\nWisdom of the Masters\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name="channels"\r\n\r\nCPPUV5KU0\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW--';
+
+    req.setHeader(
+      "content-type",
+      "multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW"
+    );
+
+    req.write(postData);
+
+    req.end();
+  });
+};
+
 (async () => {
   if (!process.env.BOT_USER_OAUTH_ACCESS_TOKEN || !process.env.CHANNEL) {
     console.error("Missing env values");
@@ -105,4 +181,9 @@ const testUpdateMessage = async (channel, token) => {
     process.env.CHANNEL,
     process.env.BOT_USER_OAUTH_ACCESS_TOKEN
   );
+
+  await testUploadFile(
+    process.env.CHANNEL,
+    process.env.BOT_USER_OAUTH_ACCESS_TOKEN
+  );
 })();
diff --git a/integration-test/one-does-not-simply.jpg b/integration-test/one-does-not-simply.jpg
new file mode 100644
index 0000000..300e1d2
Binary files /dev/null and b/integration-test/one-does-not-simply.jpg differ