Data-Driven Testing

Point your tests at real data and run every request against every row. One collection, thousands of cases, no new test code.

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Coverage your suite cannot get from one payload

Connect to anywhere your data lives

Pull rows from a CSV, JSON, or spreadsheet file, or straight from MySQL, SQL Server, and Postgres. Point a run at a live connection and it reads current data, so your tests exercise what production actually holds rather than a stale export.

Every row is a test case

The international address, the expired card, the account with no orders: your collection runs all of them in one pass, and each iteration reports its own pass and fail results. A red run points at the exact row behind it.

Run it everywhere your tests run

The same rows drive the Collection Runner, CI/CD pipelines via the Postman CLI, monitors, and private runners. Set your test data up once and every place you run gets the same coverage.

Describe the cases you want covered. Postman AI builds the set.

Data-driven testing usually stalls on assembling the input set. Describe the rows you need and Postman AI reads your connected sources, writes the SQL, previews the result, and saves it as a view your collection can run against.

Shopping Dataset›quick_commerce_integration_view

Data

Search table

Refreshed at 10:24 AM Today

customerId	first_name	last_name	email	itemId	item_name	sku	unit_price	quantity
1001	Jane	Doe	jane.doe@example.com	1	Widget A	SKU-1001	4.99	250
1001	Jane	Doe	jane.doe@example.com	2	Widget B	SKU-1002	12.50	80
1002	Marcus	Lee	marcus.lee@example.com	1	Widget A	SKU-1001	4.99	250

Query

SELECT u.id AS customerId, u.first_name, u.last_name, u.email, u.phone, i.id AS itemId, i.item_name, i.sku, i.quantity, i.unit_price, i.warehouse_locationFROM user_details uCROSS JOIN inventory_details iWHERE i.quantity > 0

RESOURCES

Go deeper on data-driven testing in Postman

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Set up the data your tests will run against

Add a data source, write a view, and set up the fields your requests reference as variables.

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Illustration representing collection templates and reusable data

Run a collection against every row

Select a view as iteration data, reference fields as variables, and query your data from a script with pm.datasets.

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Collection Runner

See how Collection Runner executes a whole collection against your data, on a schedule, or from your CI pipeline.

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See data-driven testing in Postman

Chat with a Postman expert to see how your team can run a single collection against every row of your real test data, in functional runs and load tests alike.

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