```

///

Import `TestClient`.

Create a `TestClient` by passing your **FastAPI** application to it.

Create functions with a name that starts with `test_` (this is standard `pytest` conventions).

Use the `TestClient` object the same way as you do with `httpx`.

Write simple `assert` statements with the standard Python expressions that you need to check (again, standard `pytest`).

    steps:
    - name: Set up Go 1.x
      uses: actions/setup-go@v5
      with:
        go-version: ${{ matrix.go }}

    - name: Check out code into the Go module directory
      uses: actions/checkout@v4

    - name: go mod package cache
      uses: actions/cache@v4
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('tests/go.mod') }}

		expectedErrCode     APIErrorCode
	}{
		// Test Case - 1.
		// Test case with no '=' in te inputCredentialStr.
		{
			inputCredentialStr:  "Credential",
			expectedCredentials: credentialHeader{},
			expectedErrCode:     ErrMissingFields,
		},
		// Test Case - 2.
		// Test case with no "Credential" string in te inputCredentialStr.
		{
			inputCredentialStr:  "Cred=",

    }

    // Test update with null user
    @Test
    public void test_update_nullUser() {
        TestAuthenticationChain chain = new TestAuthenticationChain();
        chain.updateThrowsException = false;

        chain.update(null);

        assertEquals(1, chain.updateCalls.size());
        assertNull(chain.updateCalls.get(0));
    }

    // Test update with multiple calls
    @Test

        ScoreUpdater updater = new ScoreUpdater();
        assertNotNull(updater);
    }

    // Test execute with empty list
    @Test
    public void test_execute_emptyList() {
        String result = scoreUpdater.execute();
        assertEquals("", result);
    }

    // Test execute with single booster
    @Test
    public void test_execute_singleBooster() {

To permanently delete an object you need to specify the version you want to delete, only the user with appropriate permissions can permanently delete a version.  As shown below DELETE request called with a specific version id permanently deletes an object from a bucket. Delete marker is not added for DELETE requests with version id.

        assertEquals("${var1value2}", ResourceUtil.resolve(value));

        // Test with special characters in replacement
        System.setProperty("special", "value$with\\backslash");
        value = "${special}";
        assertEquals("value$with\\backslash", ResourceUtil.resolve(value));

        // Test with numeric property names
        System.setProperty("123", "numeric");
        value = "${123}";

            assertEquals(TIME_HI_AND_VERSION, uuid.time_hi_and_version,
                    "time_hi_and_version should be parsed correctly with lowercase hex");
            assertEquals(CLOCK_SEQ_HI_AND_RESERVED, uuid.clock_seq_hi_and_reserved,
                    "clock_seq_hi_and_reserved should be parsed correctly with lowercase hex");

///

By using a `with` block, we make sure that the file-like object is closed after the generator function (the function with `yield`) is done. So, after it finishes sending the response.

It wouldn't be that important in this specific example because it's a fake in-memory file (with `io.BytesIO`), but with a real file, it would be important to make sure the file is closed after the work with it is done.

## Documenting webhooks with **FastAPI** and OpenAPI { #documenting-webhooks-with-fastapi-and-openapi }