diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
new file mode 100644
index 0000000..b8b6223
--- /dev/null
+++ b/.github/workflows/workflow.yml
@@ -0,0 +1,23 @@
+name: Main workflow
+on: [push]
+jobs:
+  run:
+    name: Run
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest]
+    actions:
+    - name: Set Node.js 10.x
+      uses: bryanmacfarlane/node-config@master
+      with:
+        version: 10.x
+
+    - name: npm install
+      run: npm install
+
+    - name: Lint
+      run: npm run format-check
+
+    - name: npm test
+      run: npm test
diff --git a/__tests__/find-ruby.test.ts b/__tests__/find-ruby.test.ts
index 44b6ba2..5448905 100644
--- a/__tests__/find-ruby.test.ts
+++ b/__tests__/find-ruby.test.ts
@@ -6,10 +6,11 @@ import path = require('path');
 const toolDir = path.join(__dirname, 'runner', 'tools');
 const tempDir = path.join(__dirname, 'runner', 'temp');
 
+process.env['AGENT_TOOLSDIRECTORY'] = toolDir;
 process.env['RUNNER_TOOLSDIRECTORY'] = toolDir;
 process.env['RUNNER_TEMPDIRECTORY'] = tempDir;
 
-import findRubyVersion from '../src/find-ruby';
+import {findRubyVersion} from '../src/installer';
 
 describe('find-ruby', () => {
   beforeAll(async () => {
@@ -26,22 +27,18 @@ describe('find-ruby', () => {
     }
   }, 100000);
 
+  it('Uses version of ruby installed in cache', async () => {
+    const rubyDir: string = path.join(toolDir, 'Ruby', '17.0.0', os.arch());
+    await io.mkdirP(rubyDir);
+    fs.writeFileSync(`${rubyDir}.complete`, 'hello');
+    // This will throw if it doesn't find it in the cache (because no such version exists)
+    await findRubyVersion('17.0.0');
+  });
+
   it('findRubyVersion throws if cannot find any version of ruby', async () => {
     let thrown = false;
     try {
-      await findRubyVersion('>= 2.4');
-    } catch {
-      thrown = true;
-    }
-    expect(thrown).toBe(true);
-  });
-
-  it('findRubyVersion throws version of ruby is not complete', async () => {
-    let thrown = false;
-    const rubyDir: string = path.join(toolDir, 'Ruby', '2.4.6', os.arch());
-    await io.mkdirP(rubyDir);
-    try {
-      await findRubyVersion('>= 2.4');
+      await findRubyVersion('9.9.9');
     } catch {
       thrown = true;
     }
@@ -52,8 +49,10 @@ describe('find-ruby', () => {
     const rubyDir: string = path.join(toolDir, 'Ruby', '2.4.6', os.arch());
     await io.mkdirP(rubyDir);
     fs.writeFileSync(`${rubyDir}.complete`, 'hello');
-    await findRubyVersion('>= 2.4');
+    await findRubyVersion('2.4.6');
     const binDir = path.join(rubyDir, 'bin');
-    expect(process.env['PATH']!.startsWith(`${binDir};`)).toBe(true);
+    console.log(`binDir: ${binDir}`);
+    console.log(`PATH: ${process.env['PATH']}`);
+    expect(process.env['PATH']!.startsWith(`${binDir}`)).toBe(true);
   });
 });
diff --git a/action.yml b/action.yml
index e8f0082..82ec5f3 100644
--- a/action.yml
+++ b/action.yml
@@ -8,4 +8,4 @@ inputs:
 
 runs:
   using: 'node12'
-  main: 'lib/main.js'
+  main: 'lib/setup-ruby.js'
diff --git a/lib/find-ruby.js b/lib/installer.js
similarity index 96%
rename from lib/find-ruby.js
rename to lib/installer.js
index 7827b14..f651094 100644
--- a/lib/find-ruby.js
+++ b/lib/installer.js
@@ -20,7 +20,7 @@ const exec = __importStar(require("@actions/exec"));
 const tc = __importStar(require("@actions/tool-cache"));
 const path = __importStar(require("path"));
 const IS_WINDOWS = process.platform === 'win32';
-function default_1(version) {
+function findRubyVersion(version) {
     return __awaiter(this, void 0, void 0, function* () {
         const installDir = tc.find('Ruby', version);
         if (!installDir) {
@@ -37,4 +37,4 @@ function default_1(version) {
         core.addPath(toolPath);
     });
 }
-exports.default = default_1;
+exports.findRubyVersion = findRubyVersion;
diff --git a/lib/main.js b/lib/setup-ruby.js
similarity index 83%
rename from lib/main.js
rename to lib/setup-ruby.js
index 5e661a5..cc7f5fd 100644
--- a/lib/main.js
+++ b/lib/setup-ruby.js
@@ -14,17 +14,14 @@ var __importStar = (this && this.__importStar) || function (mod) {
     result["default"] = mod;
     return result;
 };
-var __importDefault = (this && this.__importDefault) || function (mod) {
-    return (mod && mod.__esModule) ? mod : { "default": mod };
-};
 Object.defineProperty(exports, "__esModule", { value: true });
 const core = __importStar(require("@actions/core"));
-const find_ruby_1 = __importDefault(require("./find-ruby"));
+const installer_1 = require("./installer");
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
             const version = core.getInput('version');
-            yield find_ruby_1.default(version);
+            yield installer_1.findRubyVersion(version);
         }
         catch (error) {
             core.setFailed(error.message);
diff --git a/package-lock.json b/package-lock.json
index ca6646d..43be668 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,30 +1,30 @@
 {
   "name": "setup-ruby",
-  "version": "0.0.1",
+  "version": "0.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
     "@actions/core": {
-      "version": "file:../../Users/damccorm/Documents/setup-node/toolkit/actions-core-0.0.0.tgz",
+      "version": "file:C:/Users/damccorm/Documents/setup-node/toolkit/actions-core-0.0.0.tgz",
       "integrity": "sha512-58ituSV1rzBMmmsWoFDnrnsT+Wm4kD/u9NgAGbPvZ7rQHWluYtD5bDbIsjDC6rKFuhqytkxDJPsF/TWBdgc/nA==",
       "requires": {
         "@actions/exit": "^0.0.0"
       }
     },
     "@actions/exec": {
-      "version": "file:../../Users/damccorm/Documents/setup-node/toolkit/actions-exec-0.0.0.tgz",
+      "version": "file:C:/Users/damccorm/Documents/setup-node/toolkit/actions-exec-0.0.0.tgz",
       "integrity": "sha512-HHObusC4p1RElxIlrrN0sY/cweBYl+jKm3J/XWHPQZMipgJXB/dkVhUfl4KqH3Vim7oM2KjCGSfn+vTYrqVH3A=="
     },
     "@actions/exit": {
-      "version": "file:../../Users/damccorm/Documents/setup-node/toolkit/actions-exit-0.0.0.tgz",
+      "version": "file:C:/Users/damccorm/Documents/setup-node/toolkit/actions-exit-0.0.0.tgz",
       "integrity": "sha512-vQdxFWM0/AERkC79mQ886SqPmV4joWhrSF7hiSTiJoKkE9eTjrKV5WQtp7SXv6OntrQkKX+ZjgdGpv+0rvJRCw=="
     },
     "@actions/io": {
-      "version": "file:../../Users/damccorm/Documents/setup-node/toolkit/actions-io-0.0.0.tgz",
+      "version": "file:C:/Users/damccorm/Documents/setup-node/toolkit/actions-io-0.0.0.tgz",
       "integrity": "sha512-BArfobXB/b6RjR4i/+P4UcdaqR2tPjEb2WzZf9GdKiSARQn7d301pKOZAqxA+0N11X07Lk46t/txeUBcrCNbeg=="
     },
     "@actions/tool-cache": {
-      "version": "file:../../Users/damccorm/Documents/setup-node/toolkit/actions-tool-cache-0.0.0.tgz",
+      "version": "file:C:/Users/damccorm/Documents/setup-node/toolkit/actions-tool-cache-0.0.0.tgz",
       "integrity": "sha512-NavDg5VFXDfbe9TpFuj+uOHacjg1bT3Wmo3DQuul3gsGRBEXyzhh2MWKnBZs/Zh7FE3prLmIqpbtymafNBFkIA==",
       "requires": {
         "@actions/core": "^0.0.0",
diff --git a/package.json b/package.json
index 1188393..46b339e 100644
--- a/package.json
+++ b/package.json
@@ -1,9 +1,9 @@
 {
   "name": "setup-ruby",
-  "version": "0.0.1",
+  "version": "0.0.0",
   "private": true,
   "description": "setup ruby action",
-  "main": "lib/main.js",
+  "main": "lib/setup-ruby.js",
   "scripts": {
     "build": "tsc",
     "format": "prettier --write **/*.ts",
diff --git a/src/find-ruby.ts b/src/installer.ts
similarity index 93%
rename from src/find-ruby.ts
rename to src/installer.ts
index 45178bd..f71bf97 100644
--- a/src/find-ruby.ts
+++ b/src/installer.ts
@@ -5,7 +5,7 @@ import * as path from 'path';
 
 const IS_WINDOWS = process.platform === 'win32';
 
-export default async function(version: string) {
+export async function findRubyVersion(version: string) {
   const installDir: string | null = tc.find('Ruby', version);
 
   if (!installDir) {
diff --git a/src/main.ts b/src/setup-ruby.ts
similarity index 83%
rename from src/main.ts
rename to src/setup-ruby.ts
index e0d6d08..5d482d3 100644
--- a/src/main.ts
+++ b/src/setup-ruby.ts
@@ -1,5 +1,5 @@
 import * as core from '@actions/core';
-import findRubyVersion from './find-ruby';
+import {findRubyVersion} from './installer';
 
 async function run() {
   try {