nayeemzen

pipeline {
    agent none
    stages {
        stage('maven_3_jdk_13') {
            agent {
                docker { 
                    image 'maven:3-jdk-13'
                    label 'slave-1'
                }
            }

nayeemzen

// Functional programming approach to parsing query strings in Typescript/ES6.
function parseQueryString(search: string) {
  return (search.startsWith('?') ? search.substring(1) : search)
    .split('&')
    .map(str => {
      const eqIdx = str.indexOf('=');
      if (eqIdx <= 0 || eqIdx >= str.length - 1) {
        return {};
      }

nayeemzen

class AddressVerifier {
  private MapsClient mapsClient;
  
  public AddressVerifier(MapsClient mapsClient) {
    this.mapsClient = mapsClient;
  }
  
  public boolean isVerified(String address) {
    return mapsClient.isVerified(address);
  }

nayeemzen

// Now we can have multiple implementations of MapClient interface.

class GoogleMapsClientImpl implements MapsClient {
  private GoogleMapsClient googleMapsClient;
  
  public GoogleMapsClientImpl(GoogleMapsClient client) {
    googleMapsClient = client;
  }
  
  @Override

nayeemzen

interface MapsClient {
 public boolean isVerified();
}

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class AddressVerifierTest {
  @Test public void basicTest() {
     // We can use a mocking framework to mock the implementation.
     GoogleMapsClient mockMapsClient = mock(GoogleMapsClient.class);
     when(mockMapsClient.verifyAddress(SOME_INVALID_TEST_ADDRESS)).return(Result.FAILED);
     when(mockMapsClient.verifyAddress(SOME_VALID_TEST_ADDRESS)).return(Result.SUCCESS);
     AddressVerifier verifier = new AddressVerifier(mockMapsClient);
     assertThat(verifier.isVerified(SOME_INVALID_TEST_ADDRESS)).isFalse();
     assertThat(verifier.isVerified(SOME_VALID_TEST_ADDRESS)).isTrue();
     // WOOOHOOO! OUR TESTS ARE NOW FULLY INDEPENDENT OF GOOGLE MAPS CLIENT! WE TEST OUR OWN CODE, NOT THEIRS!

nayeemzen

class AddressVerifier {
  private GoogleMapsClient googleMapsClient;
  public AddressVerifier(GoogleMapsClient googleMapsClient) {
    this.googleMapsClient = googleMapsClient;
  }
  
  public boolean isVerified(String address) {
    Result verificationResult = googleMapsClient.verifyAddress(address).result;
    return verificationResult == Result.SUCCESS;
  }

nayeemzen

class AddressVerifierTest {
  @Test public void basicTest() {
    AddressVerifier verifier = new AddressVerifier();
    assertThat(verifer.isVerified(SOME_INVALID_TEST_ADDRESS)).isFalse();
    assertThat(verifer.isVerified(SOME_VALID_TEST_ADDRESS)).isTrue();
  }
}

nayeemzen

class AddressVerifier {
 private GoogleMapsClient googleMapsClient;
   public AddressVerifier() {
     googleMapsClient = new GoogleMapsClient();
   }
  
  public boolean isVerified(String address) {
    Result verificationResult = googleMapsClient.verifyAddress(address).result;
    return verificationResult == Result.SUCCESS;
  }