Initial pass

__tests__/finder.test.ts

@@ -0,0 +1,40 @@
+import io = require('@actions/io');
+import fs = require('fs');
+import os = require('os');
+import path = require('path');
+
+const toolDir = path.join(
+  process.cwd(),
+  'runner',
+  path.join(
+    Math.random()
+      .toString(36)
+      .substring(7)
+  ),
+  'tools'
+);
+const tempDir = path.join(
+  process.cwd(),
+  'runner',
+  path.join(
+    Math.random()
+      .toString(36)
+      .substring(7)
+  ),
+  'temp'
+);
+
+process.env['RUNNER_TOOLSDIRECTORY'] = toolDir;
+process.env['RUNNER_TEMPDIRECTORY'] = tempDir;
+
+import * as finder from '../src/find-python';
+
+describe('Finder tests', () => {
+  it('Finds Python if it is installed', async () => {});
+
+  it('Errors if Python is not installed', async () => {});
+
+  it('Finds PyPy if it is installed', async () => {});
+
+  it('Errors if PyPy is not installed', async () => {});
+});