Add cacerts parameter, which can copy existing cacerts into JDK

README.md

@@ -144,6 +144,7 @@ jobs:
 - [Installing custom Java package type](docs/advanced-usage.md#Installing-custom-Java-package-type)
 - [Installing custom Java architecture](docs/advanced-usage.md#Installing-custom-Java-architecture)
 - [Installing custom Java distribution from local file](docs/advanced-usage.md#Installing-Java-from-local-file)
+- [Using existing cacerts file](docs/advanced-usage.md#Using-existing-cacerts-file)
 - [Testing against different Java distributions](docs/advanced-usage.md#Testing-against-different-Java-distributions)
 - [Testing against different platforms](docs/advanced-usage.md#Testing-against-different-platforms)
 - [Publishing using Apache Maven](docs/advanced-usage.md#Publishing-using-Apache-Maven)

__tests__/distributors/base-installer.test.ts

@@ -11,6 +11,7 @@ import {
   JavaInstallerOptions,
   JavaInstallerResults
 } from '../../src/distributions/base-models';
+import fs from "fs";
 
 class EmptyJavaBase extends JavaBase {
   constructor(installerOptions: JavaInstallerOptions) {
@@ -349,3 +350,43 @@ describe('getToolcacheVersionName', () => {
     expect(actual).toBe(expected);
   });
 });
+
+describe('initCacerts', () => {
+  const DummyJavaBase = JavaBase as any;
+
+  let spyFsCopyFileSync: jest.SpyInstance;
+
+  beforeEach(() => {
+    spyFsCopyFileSync = jest.spyOn(fs, 'copyFileSync').mockImplementation();
+  });
+
+  afterEach(() => {
+    jest.resetAllMocks();
+    jest.clearAllMocks();
+    jest.restoreAllMocks();
+  });
+
+  it('should do nothing when not set', () => {
+    const mockJavaBase = new EmptyJavaBase({
+      version: '11',
+      packageType: 'jdk',
+      architecture: 'x64',
+      checkLatest: false,
+      cacerts: '',
+    });
+    DummyJavaBase.prototype.initCacerts.call(mockJavaBase, '/tmp/dummy_jdk');
+    expect(spyFsCopyFileSync).not.toHaveBeenCalled()
+  });
+
+  it('should copy cacerts file', () => {
+    const mockJavaBase = new EmptyJavaBase({
+      version: '11',
+      packageType: 'jdk',
+      architecture: 'x64',
+      checkLatest: false,
+      cacerts: '/etc/ssl/certs/java/cacerts',
+    });
+    DummyJavaBase.prototype.initCacerts.call(mockJavaBase, '/tmp/dummy_jdk');
+    expect(spyFsCopyFileSync).toHaveBeenCalledWith('/etc/ssl/certs/java/cacerts', path.join('/tmp/dummy_jdk', 'lib/security/cacerts'))
+  });
+});

action.yml

@@ -24,6 +24,9 @@ inputs:
     description: 'Set this option if you want the action to check for the latest available version that satisfies the version spec'
     required: false
     default: false
+  cacerts:
+    description: 'Copy cacerts file from given path into newly downloaded Java installation'
+    required: false
   server-id:
     description: 'ID of the distributionManagement repository in the pom.xml
        file. Default is `github`'