How Can I Guarantee Sequential Execution of Go Tests, Especially When Dependencies Exist?

Ensuring Sequential Execution of Go Tests

When executing Go tests, it's crucial to ensure their order of execution, especially when one set of tests (POST requests) needs to be completed before another (GET requests). Relying on test execution order, however, is not recommended as it's undefined.

Achieving Test Independence

Tests should be independent and not rely on each other's prerequisites. Additional tasks before a test function can be implemented using several methods:

• Within the Test Function: Place necessary tasks within the test function itself.
• Package Initialization (init() Function): This runs once before any test function executes.
• TestMain() Function: This function is called first, allowing for additional setup.

Sequential Execution for Data Initialization

In your specific scenario, considering that test data needs to be inserted before GET requests, you can check if the database is initialized in init() or TestMain(). If not, insert the test records.

Additional Options for Sequential Execution

Go 1.7 introduced subtests, which provide explicit control over execution order. Subtests can be nested within a test, defining a specific sequence for their execution.

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