Add support for arm64 Windows (#927)

* add support for arm64 Windows

* revert 7z to exe

* add comment

---------

Co-authored-by: aparnajyothi-y <147696841+aparnajyothi-y@users.noreply.github.com>

__tests__/main.test.ts

@@ -2,6 +2,7 @@ import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 import * as tc from '@actions/tool-cache';
 import * as cache from '@actions/cache';
+import * as io from '@actions/io';
 
 import fs from 'fs';
 import path from 'path';
@@ -24,6 +25,10 @@ describe('main tests', () => {
   let startGroupSpy: jest.SpyInstance;
   let endGroupSpy: jest.SpyInstance;
 
+  let whichSpy: jest.SpyInstance;
+
+  let existsSpy: jest.SpyInstance;
+
   let getExecOutputSpy: jest.SpyInstance;
 
   let getNodeVersionFromFileSpy: jest.SpyInstance;
@@ -55,6 +60,8 @@ describe('main tests', () => {
     inSpy = jest.spyOn(core, 'getInput');
     inSpy.mockImplementation(name => inputs[name]);
 
+    whichSpy = jest.spyOn(io, 'which');
+
     getExecOutputSpy = jest.spyOn(exec, 'getExecOutput');
 
     findSpy = jest.spyOn(tc, 'find');
@@ -140,6 +147,10 @@ describe('main tests', () => {
         return {stdout: obj[command], stderr: '', exitCode: 0};
       });
 
+      whichSpy.mockImplementation(cmd => {
+        return `some/${cmd}/path`;
+      });
+
       await util.printEnvDetailsAndSetOutput();
 
       expect(setOutputSpy).toHaveBeenCalledWith('node-version', obj['node']);

__tests__/official-installer.test.ts

@@ -248,6 +248,9 @@ describe('setup-node', () => {
     const toolPath = path.normalize('/cache/node/12.16.2/x64');
     exSpy.mockImplementation(async () => '/some/other/temp/path');
     cacheSpy.mockImplementation(async () => toolPath);
+    whichSpy.mockImplementation(cmd => {
+      return `some/${cmd}/path`;
+    });
 
     await main.run();