tartRendering()
                .then(resultBuffer => {
                  let testValue = resultBuffer.getChannelData(0);
                  let referenceValue = resultBuffer.getChannelData(1);

                  // Until the suspendFrame, both should be exactly equal to 1.
                  should(
                      testValue.slice(0, suspendFrame),
                      `Test[0:${suspendFrame - 1}]`)
                      .beConstantValueOf(1);
                  should(
                      referenceV