update tool-cache for proxy and fix tests (#57)

update tool-cache for proxy and fix tests

src/cache.ts

@@ -0,0 +1,11 @@
+import * as core from '@actions/core';
+import * as tc from '@actions/tool-cache';
+import * as path from 'path';
+
+export async function find(version: string): Promise<string> {
+  const installDir: string | null = tc.find('Ruby', version);
+
+  let toolPath: string = installDir ? path.join(installDir, 'bin') : '';
+
+  return toolPath;
+}

src/installer.ts

@@ -1,15 +1 @@
-import * as core from '@actions/core';
-import * as tc from '@actions/tool-cache';
-import * as path from 'path';
-
-export async function findRubyVersion(version: string) {
-  const installDir: string | null = tc.find('Ruby', version);
-
-  if (!installDir) {
-    throw new Error(`Version ${version} not found`);
-  }
-
-  const toolPath: string = path.join(installDir, 'bin');
-
-  core.addPath(toolPath);
-}
+// TODO: support acquiring JIT

src/main.ts

@@ -0,0 +1,27 @@
+import * as core from '@actions/core';
+import * as cache from './cache';
+
+export async function run() {
+  try {
+    let versionSpec = core.getInput('ruby-version', {required: true});
+    if (!versionSpec) {
+      // deprecated
+      versionSpec = core.getInput('version');
+    }
+
+    // check in the VMs cache first
+    let toolPath: string = await cache.find(versionSpec);
+
+    // TODO: download JIT and/or ruby-build
+
+    if (!toolPath) {
+      core.setFailed(`Version ${versionSpec} not found`);
+      return;
+    }
+
+    core.addPath(toolPath);
+  } catch (error) {
+    // unhandled
+    core.setFailed(error.message);
+  }
+}

src/setup-ruby.ts

@@ -1,16 +1,3 @@
-import * as core from '@actions/core';
-import {findRubyVersion} from './installer';
-
-async function run() {
-  try {
-    let version = core.getInput('version');
-    if (!version) {
-      version = core.getInput('ruby-version');
-    }
-    await findRubyVersion(version);
-  } catch (error) {
-    core.setFailed(error.message);
-  }
-}
+import {run} from './main';
 
 run();