# Development - Contributing

First, you might want to see the basic ways to [help FastAPI and get help](help-fastapi.md){.internal-link target=_blank}.

## Developing

If you already cloned the <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">fastapi repository</a> and you want to deep dive in the code, here are some guidelines to set up your environment.

### Virtual environment

  fun commit(upstreamSize: Long) {
    // Write metadata to the end of the file.
    writeMetadata(upstreamSize)
    file!!.channel.force(false)

    // Once everything else is in place we can swap the dirty header for a clean one.
    writeHeader(PREFIX_CLEAN, upstreamSize, metadata.size.toLong())
    file!!.channel.force(false)

    // This file is complete.
    synchronized(this@Relay) {
      complete = true
    }

# https://squidfunk.github.io/mkdocs-material/
# It requires python3 to run.

set -ex

REPO="******@****.***:square/okhttp.git"
DIR=temp-clone

# Delete any existing temporary website clone
rm -rf $DIR

# Clone the current repo into temp folder
git clone $REPO $DIR
# Replace `git clone` with these lines to hack on the website locally
# cp -a . "../okhttp-website"
# mv "../okhttp-website" "$DIR"

        trusted.certificate,
      )
    assertThat(cleaner.clean(list(certB, certA), "hostname")).isEqualTo(
      list(certB, certA, trusted, selfSigned),
    )
    assertThat(cleaner.clean(list(certB, certA, trusted), "hostname")).isEqualTo(
      list(certB, certA, trusted, selfSigned),
    )
    assertThat(cleaner.clean(list(certB, certA, trusted, selfSigned), "hostname"))
      .isEqualTo(

  public void testSingleQuantile_median() {
    double referenceValue = REFERENCE_ALGORITHM.singleQuantile(1, 2, dataset.clone());
    for (QuantilesAlgorithm algorithm : NON_REFERENCE_ALGORITHMS) {
      assertWithMessage("Mismatch between %s and %s", algorithm, REFERENCE_ALGORITHM)
          .that(algorithm.singleQuantile(1, 2, dataset.clone()))
          .isWithin(ALLOWED_ERROR)
          .of(referenceValue);
    }
  }

                this.endDate = this.startDate.clone();

            if (this.maxDate && this.endDate.isAfter(this.maxDate))
                this.endDate = this.maxDate.clone();

            if (this.maxSpan && this.startDate.clone().add(this.maxSpan).isBefore(this.endDate))
                this.endDate = this.startDate.clone().add(this.maxSpan);

            this.previousRightTime = this.endDate.clone();

      "coverage" : {
        "per_commit" : [ "linux" ]
      }
    } ]
  }, {
    "testId" : "org.gradle.performance.regression.android.RealLifeAndroidBuildPerformanceTest.clean assembleDebug with clean transforms cache",
    "groups" : [ {
      "testProject" : "largeAndroidBuild",
      "coverage" : {
        "per_day" : [ "linux" ]
      }
    }, {
      "testProject" : "nowInAndroidBuild",

        assertEquals(original.getUsername(), cloned.getUsername());
        assertEquals(original.getPassword(), cloned.getPassword());

        // Verify password arrays are independent
        original.secureWipePassword();
        assertNull(original.getPassword());
        assertEquals("ClonePass123!", cloned.getPassword());
    }

    /**
     * Test authentication type guessing with secure password

    @Override
    public void setUp() throws Exception {
        super.setUp();
        processHelper = new ProcessHelper();
    }

    @Override
    public void tearDown() throws Exception {
        // Clean up any running processes
        processHelper.destroy();
        super.tearDown();
    }

    public void test_isProcessRunning_empty() {
        assertFalse(processHelper.isProcessRunning());
    }

 * {@link #DEFAULT default}, {@link #CLEAN clean}, and {@link #SITE site}, with the
 * {@code default} lifecycle being the most commonly used for project builds.
 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface Lifecycle extends ExtensibleEnum {

    // =========================
    // Maven defined lifecycles
    // =========================
    String CLEAN = "clean";
    String DEFAULT = "default";