**Test Case For Estimated Time Of Arrival**: A low-level test case cannot be written based on just one line. But I can try high-level scenarios you can use to write a test case.

**Assumption:** estimated time of arrival for shipment/order. But still, you have to design scenarios around Calculation, Like:

Post On: | Test Case For Estimated Time Of Arrival Formula |

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- Total time should include the estimated time to complete all the mid-phases like shipping, packing, etc.
- Also, we must ensure that when one of the phases exceeds the time, the total time should change accordingly.
- If the shipment is not on track or the initial phase exceeds the estimated time, it must show a delay notification.
- There should be some failover strategy to identify if the estimation is exceeded.
- Acknowledgment once the shipment arrives.
- Tracking information like page tracking by fetching real-time updates from courier partners.
- If provided: notification updates like email, SMS, or app notification.

### What is the ETA?

Before discussing what ETA is, let’s try to know the full form of ETA. ETA stands for the estimated time of arrival.

#### Example

In our everyday life, most of the time, we calculate the estimated time of arrival. For example, sometimes we tell our friends I will be there in 10 minutes. Or I want to start from your house so you can reach the cinema hall or theatre in time so you will not miss the previews.

### What is the estimated time of arrival formula?

When calculating the ETA, we must consider three elements: distance, speed, and time.

**Distance**is between where we are and where we plan to go. We have different measurement units for calculating the distance.**Speed**determines how fast you travel from one point to your destination.**Time:**this is what we need to solve. In every situation, we know the distance and speed.

**Estimated Time of Arrival Formula**

- Distance = Speed x Time
- Speed = Distance/Time
- Time = Distance/Speed