diff --git a/dist/index.js b/dist/index.js
index e5d372c..3ef066e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -378,56 +378,11 @@ module.exports._enoent = enoent;
 /***/ }),
 
 /***/ 31:
-/***/ (function(module, __unusedexports, __webpack_require__) {
-
-const core = __webpack_require__(470);
-const { GitHub } = __webpack_require__(469);
-const fs = __webpack_require__(747);
-
-async function run() {
-  try {
-    // Get authenticated GitHub client (Ocktokit): https://github.com/actions/toolkit/tree/master/packages/github#usage
-    const github = new GitHub(process.env.GITHUB_TOKEN);
-
-    // Get the inputs from the workflow file: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
-    const uploadUrl = core.getInput('upload_url', { required: true });
-    const assetPath = core.getInput('asset_path', { required: true });
-    const assetName = core.getInput('asset_name', { required: true });
-    const assetContentType = core.getInput('asset_content_type', { required: true });
-
-    // Determine content-length for header to upload asset
-    const contentLength = filePath => fs.statSync(filePath).size;
-
-    // Setup headers for API call, see Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset for more information
-    const headers = { 'content-type': assetContentType, 'content-length': contentLength(assetPath) };
-
-    // Upload a release asset
-    // API Documentation: https://developer.github.com/v3/repos/releases/#upload-a-release-asset
-    // Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset
-    const uploadAssetResponse = await github.repos.uploadReleaseAsset({
-      url: uploadUrl,
-      headers,
-      name: assetName,
-      file: assetPath
-    });
-
-    // Get the browser_download_url for the uploaded release asset from the response
-    const {
-      data: { browser_download_url: browserDownloadUrl }
-    } = uploadAssetResponse;
-
-    // Set the output variable for use by other actions: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
-    core.setOutput('browser_download_url', browserDownloadUrl);
-  } catch (error) {
-    core.setFailed(error.message);
-  }
-}
+/***/ (function(__unusedmodule, __unusedexports, __webpack_require__) {
 
-module.exports = run;
+const run = __webpack_require__(379);
 
-if (require.main === require.cache[eval('__filename')]) {
-  run();
-}
+run();
 
 
 /***/ }),
@@ -4153,6 +4108,57 @@ function octokitDebug (octokit) {
 }
 
 
+/***/ }),
+
+/***/ 379:
+/***/ (function(module, __unusedexports, __webpack_require__) {
+
+const core = __webpack_require__(470);
+const { GitHub } = __webpack_require__(469);
+const fs = __webpack_require__(747);
+
+async function run() {
+  try {
+    // Get authenticated GitHub client (Ocktokit): https://github.com/actions/toolkit/tree/master/packages/github#usage
+    const github = new GitHub(process.env.GITHUB_TOKEN);
+
+    // Get the inputs from the workflow file: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
+    const uploadUrl = core.getInput('upload_url', { required: true });
+    const assetPath = core.getInput('asset_path', { required: true });
+    const assetName = core.getInput('asset_name', { required: true });
+    const assetContentType = core.getInput('asset_content_type', { required: true });
+
+    // Determine content-length for header to upload asset
+    const contentLength = filePath => fs.statSync(filePath).size;
+
+    // Setup headers for API call, see Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset for more information
+    const headers = { 'content-type': assetContentType, 'content-length': contentLength(assetPath) };
+
+    // Upload a release asset
+    // API Documentation: https://developer.github.com/v3/repos/releases/#upload-a-release-asset
+    // Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset
+    const uploadAssetResponse = await github.repos.uploadReleaseAsset({
+      url: uploadUrl,
+      headers,
+      name: assetName,
+      file: assetPath
+    });
+
+    // Get the browser_download_url for the uploaded release asset from the response
+    const {
+      data: { browser_download_url: browserDownloadUrl }
+    } = uploadAssetResponse;
+
+    // Set the output variable for use by other actions: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
+    core.setOutput('browser_download_url', browserDownloadUrl);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+module.exports = run;
+
+
 /***/ }),
 
 /***/ 385:
diff --git a/package.json b/package.json
index 407bda2..4ca8d42 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "main": "dist/index.js",
   "scripts": {
     "lint": "eslint 'src/**.js' 'tests/**.js' --fix",
-    "test": "eslint 'src/**.js' 'tests/**.js' --fix && jest",
+    "test": "eslint 'src/**.js' 'tests/**.js' && jest --coverage",
     "build": "ncc build src/main.js",
     "precommit": "npm run build && git add dist/"
   },
@@ -41,7 +41,7 @@
   "jest": {
     "testEnvironment": "node",
     "collectCoverageFrom": [
-      "src/main.js"
+      "src/upload-release-asset.js"
     ],
     "coverageThreshold": {
       "global": {
diff --git a/src/main.js b/src/main.js
index 8799239..1e1955b 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,48 +1,3 @@
-const core = require('@actions/core');
-const { GitHub } = require('@actions/github');
-const fs = require('fs');
+const run = require('./upload-release-asset');
 
-async function run() {
-  try {
-    // Get authenticated GitHub client (Ocktokit): https://github.com/actions/toolkit/tree/master/packages/github#usage
-    const github = new GitHub(process.env.GITHUB_TOKEN);
-
-    // Get the inputs from the workflow file: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
-    const uploadUrl = core.getInput('upload_url', { required: true });
-    const assetPath = core.getInput('asset_path', { required: true });
-    const assetName = core.getInput('asset_name', { required: true });
-    const assetContentType = core.getInput('asset_content_type', { required: true });
-
-    // Determine content-length for header to upload asset
-    const contentLength = filePath => fs.statSync(filePath).size;
-
-    // Setup headers for API call, see Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset for more information
-    const headers = { 'content-type': assetContentType, 'content-length': contentLength(assetPath) };
-
-    // Upload a release asset
-    // API Documentation: https://developer.github.com/v3/repos/releases/#upload-a-release-asset
-    // Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset
-    const uploadAssetResponse = await github.repos.uploadReleaseAsset({
-      url: uploadUrl,
-      headers,
-      name: assetName,
-      file: assetPath
-    });
-
-    // Get the browser_download_url for the uploaded release asset from the response
-    const {
-      data: { browser_download_url: browserDownloadUrl }
-    } = uploadAssetResponse;
-
-    // Set the output variable for use by other actions: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
-    core.setOutput('browser_download_url', browserDownloadUrl);
-  } catch (error) {
-    core.setFailed(error.message);
-  }
-}
-
-module.exports = run;
-
-if (require.main === module) {
-  run();
-}
+run();
diff --git a/src/upload-release-asset.js b/src/upload-release-asset.js
new file mode 100644
index 0000000..fb07643
--- /dev/null
+++ b/src/upload-release-asset.js
@@ -0,0 +1,44 @@
+const core = require('@actions/core');
+const { GitHub } = require('@actions/github');
+const fs = require('fs');
+
+async function run() {
+  try {
+    // Get authenticated GitHub client (Ocktokit): https://github.com/actions/toolkit/tree/master/packages/github#usage
+    const github = new GitHub(process.env.GITHUB_TOKEN);
+
+    // Get the inputs from the workflow file: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
+    const uploadUrl = core.getInput('upload_url', { required: true });
+    const assetPath = core.getInput('asset_path', { required: true });
+    const assetName = core.getInput('asset_name', { required: true });
+    const assetContentType = core.getInput('asset_content_type', { required: true });
+
+    // Determine content-length for header to upload asset
+    const contentLength = filePath => fs.statSync(filePath).size;
+
+    // Setup headers for API call, see Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset for more information
+    const headers = { 'content-type': assetContentType, 'content-length': contentLength(assetPath) };
+
+    // Upload a release asset
+    // API Documentation: https://developer.github.com/v3/repos/releases/#upload-a-release-asset
+    // Octokit Documentation: https://octokit.github.io/rest.js/#octokit-routes-repos-upload-release-asset
+    const uploadAssetResponse = await github.repos.uploadReleaseAsset({
+      url: uploadUrl,
+      headers,
+      name: assetName,
+      file: assetPath
+    });
+
+    // Get the browser_download_url for the uploaded release asset from the response
+    const {
+      data: { browser_download_url: browserDownloadUrl }
+    } = uploadAssetResponse;
+
+    // Set the output variable for use by other actions: https://github.com/actions/toolkit/tree/master/packages/core#inputsoutputs
+    core.setOutput('browser_download_url', browserDownloadUrl);
+  } catch (error) {
+    core.setFailed(error.message);
+  }
+}
+
+module.exports = run;
diff --git a/tests/main.test.js b/tests/upload-release-asset.test.js
similarity index 97%
rename from tests/main.test.js
rename to tests/upload-release-asset.test.js
index f5c025d..37a2686 100644
--- a/tests/main.test.js
+++ b/tests/upload-release-asset.test.js
@@ -5,7 +5,7 @@ jest.mock('fs');
 const core = require('@actions/core');
 const { GitHub, context } = require('@actions/github');
 const fs = require('fs');
-const run = require('../src/main.js');
+const run = require('../src/upload-release-asset');
 
 /* eslint-disable no-undef */
 describe('Upload Release Asset', () => {