How to use the fabric-client/lib/Packager.js.package function in fabric-client

test('\n\n** Java chaincode Packager tests **\n\n', async (t) => {
	try {
		const dev_mode_package = await Packager.package(testutil.JAVA_CHAINCODE_PATH, 'java', true);
		t.equal(dev_mode_package, null, 'Should return null when packaging for dev mode');
		try {
			await Packager.package('blah', 'java', false);
			t.fail('Packager.package() should have rejected a call that does not have valid chaincodePath parameter');
		} catch (error) {
			const msg = 'ENOENT: no such file or directory';
			if (error.message.indexOf(msg) >= 0) {
				t.pass('Should throw error: ' + msg);
			} else {
				t.fail(error.message + 'should be' + msg);
				t.end();
			}
		}

		destDir = path.join(testutil.getTempDir(), 'test-java-chaincode');
		tmpFile = path.join(testutil.getTempDir(), 'test-java-chaincode.tar.gz');
		targzDir = path.join(testutil.getTempDir(), 'test-java-chaincode-tar-gz');

		fs.removeSync(destDir);

test('\n\n** Golang Packager tests **\n\n', (t) => {
	Packager.package('blah', '', true)
		.then((data) => {
			t.equal(data, null, 'Channel.packageChaincode() should return null for dev mode');
			return Packager.package(null, '', false);
		}).then(() => {
			t.fail('Packager.package() should have rejected a call that does not have chaincodePath parameter');
			t.end();
		},
		(err) => {
			const msg = 'Missing chaincodePath parameter';
			if (err.message.indexOf(msg) >= 0) {
				t.pass('Should throw error: ' + msg);
			} else {
				t.fail(err.message + ' should be ' + msg);
				t.end();
			}

}).then(() => {
			const destDir = path.join(testutil.getTempDir(), 'test-deploy-copy-tar-gz');
			const checkPath = path.join(destDir, 'src', 'github.com', 'example_cc', 'example_cc.go');
			console.log('***** tmpFile   :: ' + tmpFile);
			console.log('***** checkPath :: ' + checkPath);
			t.equal(fs.existsSync(checkPath), true, 'The tar.gz file produced by Packager.package() has the "chaincode/github.com/example_cc/example_cc.go" file');
			return Packager.package(testutil.CHAINCODE_PATH, '', false, testutil.METADATA_PATH);
		}).then((data) => {
			const tmpFile = path.join(testutil.getTempDir(), 'test-deploy-copy.tar.gz');

}, (err) => {
			const msg = 'ENOENT: no such file or directory';
			if (err.message.indexOf(msg) >= 0) {
				t.pass('Should throw error: ' + msg);
			} else {
				t.fail(err.message + 'should be' + msg);
				t.end();
			}

			fs.removeSync(destDir);
			fs.copySync(testutil.NODE_CHAINCODE_PATH, destDir);

			fs.outputFileSync(path.join(destDir, 'node_modules/dummy/package.json'), 'dummy package.json content');
			fs.outputFileSync(path.join(destDir, 'dummy.js'), 'this is the content of dummy.js');

			return Packager.package(destDir, 'node', false);
		}).then((data) => {
			return check(data, () => {

}).then((data) => {
			t.equal(data, null, 'Should return null when packaging for dev mode');
			return Packager.package('blah', '', false);
		}).then(() => {
			t.fail('Packager.package() should have rejected a call that does not have valid chaincodePath parameter');

(err) => {
			const msg = 'ENOENT: no such file or directory';
			if (err.message.indexOf(msg) >= 0) {
				t.pass('Should throw error: ' + msg);
			} else {
				t.fail(err.message + 'should be' + msg);
				t.end();
			}

			return Packager.package(testutil.CHAINCODE_PATH, '', false);
		}).then((data) => {
			const tmpFile = path.join(testutil.getTempDir(), 'test-deploy-copy.tar.gz');

.then((data) => {
			t.equal(data, null, 'Channel.packageChaincode() should return null for dev mode');
			return Packager.package(null, '', false);
		}).then(() => {
			t.fail('Packager.package() should have rejected a call that does not have chaincodePath parameter');

if (error.message.indexOf(msg) >= 0) {
				t.pass('Should throw error: ' + msg);
			} else {
				t.fail(error.message + 'should be' + msg);
				t.end();
			}
		}

		destDir = path.join(testutil.getTempDir(), 'test-java-chaincode');
		tmpFile = path.join(testutil.getTempDir(), 'test-java-chaincode.tar.gz');
		targzDir = path.join(testutil.getTempDir(), 'test-java-chaincode-tar-gz');

		fs.removeSync(destDir);
		fs.copySync(testutil.JAVA_CHAINCODE_PATH, destDir);

		const real_package = await Packager.package(destDir, 'java', false);
		await processPackage(real_package, tmpFile, targzDir);
		let checkPath = path.join(targzDir, 'src', 'src', 'main', 'java', 'org', 'hyperledger', 'fabric', 'example', 'SimpleChaincode.java');
		t.equal(fs.existsSync(checkPath), true, 'The tar.gz file produced by Packager.package() has the "SimpleChaincode.java" file');

		const meta_package = await Packager.package(destDir, 'java', false, testutil.METADATA_PATH);
		await processPackage(meta_package, tmpFile, targzDir);
		checkPath = path.join(targzDir, 'META-INF', 'statedb', 'couchdb', 'indexes', 'index.json');
		t.equal(fs.existsSync(checkPath), true, 'The tar.gz file produced by Packager.package() has the "META-INF/statedb/couchdb/indexes/index.json" file');
	} catch (overall_error) {
		t.fail('Caught error in Java Package.package tests');
		t.comment(overall_error.stack ? overall_error.stack : overall_error);
	}

	t.end();

});

.then((data) => {
			t.equal(data, null, 'Should return null when packaging for dev mode');
			return Packager.package('blah', 'node', false);
		}).then(() => {
			t.fail('Packager.package() should have rejected a call that does not have valid chaincodePath parameter');

}
		}

		destDir = path.join(testutil.getTempDir(), 'test-java-chaincode');
		tmpFile = path.join(testutil.getTempDir(), 'test-java-chaincode.tar.gz');
		targzDir = path.join(testutil.getTempDir(), 'test-java-chaincode-tar-gz');

		fs.removeSync(destDir);
		fs.copySync(testutil.JAVA_CHAINCODE_PATH, destDir);

		const real_package = await Packager.package(destDir, 'java', false);
		await processPackage(real_package, tmpFile, targzDir);
		let checkPath = path.join(targzDir, 'src', 'src', 'main', 'java', 'org', 'hyperledger', 'fabric', 'example', 'SimpleChaincode.java');
		t.equal(fs.existsSync(checkPath), true, 'The tar.gz file produced by Packager.package() has the "SimpleChaincode.java" file');

		const meta_package = await Packager.package(destDir, 'java', false, testutil.METADATA_PATH);
		await processPackage(meta_package, tmpFile, targzDir);
		checkPath = path.join(targzDir, 'META-INF', 'statedb', 'couchdb', 'indexes', 'index.json');
		t.equal(fs.existsSync(checkPath), true, 'The tar.gz file produced by Packager.package() has the "META-INF/statedb/couchdb/indexes/index.json" file');
	} catch (overall_error) {
		t.fail('Caught error in Java Package.package tests');
		t.comment(overall_error.stack ? overall_error.stack : overall_error);
	}

	t.end();

});