vanilla-http-server/src/test/java/de/havemann/lukas/vanillahttp/acceptancetest/Extension1AcceptanceTest.java at main · LukasHavemann/vanilla-http-server · GitHub

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package de.havemann.lukas.vanillahttp.acceptancetest;

import static org.assertj.core.api.Assertions.assertThat;

import de.havemann.lukas.vanillahttp.VanillaHttpServer;
import de.havemann.lukas.vanillahttp.protocol.specification.HttpHeaderField;
import de.havemann.lukas.vanillahttp.protocol.specification.HttpStatusCode;
import java.io.IOException;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInstance;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.TestPropertySource;

/**
 * Testing the fulfilment of the following requirements:
 * <p>
 * Add proper handling of HTTP ETag, If-Match, If-None-Match, If-Modified-Since headers.
 */
@SpringBootTest(classes = VanillaHttpServer.class)
@TestPropertySource(properties = {
    "vanilla.server.port=9998",
    "vanilla.server.filesystem.basedir=./src/test/resources/sampledirectory"
})
@TestInstance(TestInstance.Lifecycle.PER_CLASS)
class Extension1AcceptanceTest {

  private static final String BASE_URL = "http://localhost:9998/";

  private static final ZonedDateTime LAST_MODIFIED_OF_TEST_FILE =
      ZonedDateTime
          .from(DateTimeFormatter.RFC_1123_DATE_TIME.parse("Thu, 15 Apr 2021 18:26:56 GMT"));

  @Test
  void ifLastModifiedIsRespectedTest() throws IOException {
    final Connection connection = Jsoup.connect(BASE_URL + "fileonfirstlevel.txt")
        .method(Connection.Method.GET);
    final Connection.Response firstResponse = connection.execute();
    final String firstResponseLastModified = firstResponse
        .header(HttpHeaderField.LAST_MODIFIED.getRepresentation());

    assertThat(firstResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());

    final Connection.Response secondResponse = connection
        .header(HttpHeaderField.IF_MODIFIED_SINCE.getRepresentation(), firstResponseLastModified)
        .execute();

    assertThat(secondResponse.statusCode()).isEqualTo(HttpStatusCode.NOT_MODIFIED.getCode());
  }

  @Test
  void ifLastModifiedIsRespectedOnHeadRequestTooTest() throws IOException {
    final Connection connection = Jsoup.connect(BASE_URL + "fileonfirstlevel.txt")
        .method(Connection.Method.HEAD);
    final Connection.Response firstResponse = connection.execute();
    final String firstResponseLastModified = firstResponse
        .header(HttpHeaderField.LAST_MODIFIED.getRepresentation());

    assertThat(firstResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());

    final Connection.Response secondResponse = connection
        .header(HttpHeaderField.IF_MODIFIED_SINCE.getRepresentation(), firstResponseLastModified)
        .execute();

    assertThat(secondResponse.statusCode()).isEqualTo(HttpStatusCode.NOT_MODIFIED.getCode());
  }

  @Test
  void oldLastModifiedTest() throws IOException {
    final Connection connection = Jsoup.connect(BASE_URL + "fileonfirstlevel.txt")
        .method(Connection.Method.GET);
    final Connection.Response firstResponse = connection.execute();

    assertThat(firstResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());

    final Connection.Response secondResponse = connection
        .header(HttpHeaderField.IF_MODIFIED_SINCE.getRepresentation(),
            DateTimeFormatter.RFC_1123_DATE_TIME.format(LAST_MODIFIED_OF_TEST_FILE.minusDays(10)))
        .execute();

    assertThat(secondResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());
  }

  @Test
  void ifMatchIsRespectedTest() throws IOException {
    final Connection connection = Jsoup.connect(BASE_URL + "fileonfirstlevel.txt")
        .method(Connection.Method.GET);
    final Connection.Response firstResponse = connection.execute();
    final String firstResponseEtag = firstResponse
        .header(HttpHeaderField.E_TAG.getRepresentation());

    assertThat(firstResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());

    final Connection.Response secondResponse = connection
        .header(HttpHeaderField.IF_MATCH.getRepresentation(), firstResponseEtag)
        .execute();

    assertThat(secondResponse.statusCode()).isEqualTo(HttpStatusCode.NOT_MODIFIED.getCode());

    final Connection.Response thirdResponse = connection
        .header(HttpHeaderField.IF_MATCH.getRepresentation(), "wrongETag")
        .execute();

    assertThat(thirdResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());
  }


  @Test
  void eTagShouldHavePrecedenceBeforeLastModifiedTest() throws IOException {
    final Connection connection = Jsoup.connect(BASE_URL + "fileonfirstlevel.txt")
        .method(Connection.Method.GET);
    final Connection.Response firstResponse = connection.execute();
    final String firstResponseEtag = firstResponse
        .header(HttpHeaderField.E_TAG.getRepresentation());

    assertThat(firstResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());

    final Connection.Response secondResponse = connection
        .header(HttpHeaderField.IF_MATCH.getRepresentation(), firstResponseEtag)
        .header(HttpHeaderField.LAST_MODIFIED.getRepresentation(),
            DateTimeFormatter.RFC_1123_DATE_TIME.format(LAST_MODIFIED_OF_TEST_FILE.plusDays(10)))
        .execute();

    assertThat(secondResponse.statusCode()).isEqualTo(HttpStatusCode.NOT_MODIFIED.getCode());
  }

  @Test
  void ifNoneMatchIsRespectedTest() throws IOException {
    final Connection connection = Jsoup.connect(BASE_URL + "fileonfirstlevel.txt")
        .method(Connection.Method.GET);
    final Connection.Response firstResponse = connection.execute();
    final String firstResponseEtag = firstResponse
        .header(HttpHeaderField.E_TAG.getRepresentation());

    assertThat(firstResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());

    final Connection.Response secondResponse = connection
        .header(HttpHeaderField.IF_NONE_MATCH.getRepresentation(), firstResponseEtag)
        .execute();

    assertThat(secondResponse.statusCode()).isEqualTo(HttpStatusCode.NOT_MODIFIED.getCode());

    final Connection.Response thirdResponse = connection
        .header(HttpHeaderField.IF_NONE_MATCH.getRepresentation(), "wrongETag")
        .execute();

    assertThat(thirdResponse.statusCode()).isEqualTo(HttpStatusCode.OK.getCode());
  }
}