Update readme and test matrix

__tests__/auth.test.ts

@@ -1,7 +1,6 @@
 import io = require('@actions/io');
 import fs = require('fs');
 import path = require('path');
-import * as core from '@actions/core';
 import os from 'os';
 
 import * as auth from '../src/auth';
@@ -11,14 +10,11 @@ const settingsFile = path.join(m2Dir, auth.SETTINGS_FILE);
 
 describe('auth tests', () => {
   let spyOSHomedir: jest.SpyInstance;
-  let spyInfo: jest.SpyInstance;
 
   beforeEach(async () => {
     await io.rmRF(m2Dir);
     spyOSHomedir = jest.spyOn(os, 'homedir');
     spyOSHomedir.mockReturnValue(__dirname);
-    spyInfo = jest.spyOn(core, 'info');
-    spyInfo.mockImplementation(() => null);
   }, 300000);
 
   afterAll(async () => {

__tests__/cache.test.ts

@@ -14,8 +14,6 @@ describe('dependency cache', () => {
   let workspace: string;
   let spyInfo: jest.SpyInstance<void, Parameters<typeof core.info>>;
   let spyWarning: jest.SpyInstance<void, Parameters<typeof core.warning>>;
-  let spyDebug: jest.SpyInstance<void, Parameters<typeof core.debug>>;
-  let spySaveState: jest.SpyInstance<void, Parameters<typeof core.saveState>>;
 
   beforeEach(() => {
     workspace = mkdtempSync(join(tmpdir(), 'setup-java-cache-'));
@@ -40,16 +38,7 @@ describe('dependency cache', () => {
 
   beforeEach(() => {
     spyInfo = jest.spyOn(core, 'info');
-    spyInfo.mockImplementation(() => null);
-
     spyWarning = jest.spyOn(core, 'warning');
-    spyWarning.mockImplementation(() => null);
-
-    spyDebug = jest.spyOn(core, 'debug');
-    spyDebug.mockImplementation(() => null);
-
-    spySaveState = jest.spyOn(core, 'saveState');
-    spySaveState.mockImplementation(() => null);
   });
 
   afterEach(() => {
@@ -69,7 +58,6 @@ describe('dependency cache', () => {
       spyCacheRestore = jest
         .spyOn(cache, 'restoreCache')
         .mockImplementation((paths: string[], primaryKey: string) => Promise.resolve(undefined));
-      spyWarning.mockImplementation(() => null);
     });
 
     it('throws error if unsupported package manager specified', () => {
@@ -129,7 +117,6 @@ describe('dependency cache', () => {
       spyCacheSave = jest
         .spyOn(cache, 'saveCache')
         .mockImplementation((paths: string[], key: string) => Promise.resolve(0));
-      spyWarning.mockImplementation(() => null);
     });
 
     it('throws error if unsupported package manager specified', () => {

__tests__/cleanup-java.test.ts

@@ -5,7 +5,6 @@ import * as util from '../src/util';
 
 describe('cleanup', () => {
   let spyWarning: jest.SpyInstance<void, Parameters<typeof core.warning>>;
-  let spyInfo: jest.SpyInstance<void, Parameters<typeof core.info>>;
   let spyCacheSave: jest.SpyInstance<
     ReturnType<typeof cache.saveCache>,
     Parameters<typeof cache.saveCache>
@@ -14,9 +13,6 @@ describe('cleanup', () => {
 
   beforeEach(() => {
     spyWarning = jest.spyOn(core, 'warning');
-    spyWarning.mockImplementation(() => null);
-    spyInfo = jest.spyOn(core, 'info');
-    spyInfo.mockImplementation(() => null);
     spyCacheSave = jest.spyOn(cache, 'saveCache');
     spyJobStatusSuccess = jest.spyOn(util, 'isJobStatusSuccess');
     spyJobStatusSuccess.mockReturnValue(true);