# Test Bench
The Test Bench allows you to evaluate the rules created in the rule designer. By entering input data and clicking the **Run** button, you can simulate rule execution and view the results in real time. Test Bench helps ensure that the rules are functioning as intended before applying them in a live environment.
Test Bench works consistently across all rule types, ensuring a uniform testing experience. It comes in two variants. A user-friendly variant and the more technical JSON Bench. See the Decision Table Test Bench bellow as an example.
### Used in Rule
To access the Test Bench, click the button in the bottom bar.
Test Bench in bottom bar
Open Test Bench
JSON Bench
### Test Bench resizing
Drag the purple line up to resize the test bench.
### Filling input
{% hint style="success" %}
If you want to use comma inside the input field, please put the whole word in double quote marks.
E.g. "some,text"
{% endhint %}
{% hint style="info" %}
The reason for having to put text with comma inside quote marks is that if you write 1,2,3 as input in the simple test bench, it will be interpreted as an array(list) on the backend.
E.g. 1,2,3 would be converted to \[1,2,3]
{% endhint %}
### Date Input
You can input by clicking on the three dots .
Then click on the date icon .
A pop-up will be shown.
Choose the date, time and time zone (only the time zone is required) and click save.
If you decide to change the date, you can simply click on the input that will change color on hover.
{% hint style="info" %}
To clear the input simply click on the mentioned three dots  and then click on clear.
{% endhint %}
{% hint style="info" %}
If you're using the [Valid Values](/doc/v1/decision-tables/table-operations/valid-values.md) functionality in your Decision Table, it is also available in the Test Bench
{% endhint %}
### Switching between benches
Click on JSON Bench button to switch between the simple and JSON test bench.
{% hint style="success" %}
When you switch between the benches, the data will be persisted.
{% endhint %}
{% hint style="success" %}
One caveat being that if you input an array of objects inside the JSON bench, then switch to simple bench, it will show only the first object of that array.
Same applies for output.
However by switching back to the JSON bench, you will see that the array of data has been persisted and only the first object was changed (if you have made any changes inside the simple bench).
{% endhint %}
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.decisionrules.io/doc/v1/other/test-bench.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.