{
            label: 'test',
            description: 'Test exponentialRampToValue with end time in the past'
          },
          (task, should) => {
            let {context, source, test, reference} = setupRetrospectiveGraph();

            // Suspend the context at this frame so we can synchronously set up
            // automations.
            const suspendFrame = 128;

            context.suspend(suspendFrame / context.sampleRate)
                .then(() => {
                  // Call setTargetAtT