Code Review: Basic Testing

Take advantage of Go’s built-in testing framework to write idiomatic tests.

Make sure that tests cover positive and negative cases.

Use the testdata directory to hold data for running your tests.

Use t.Context() instead of context.Background().

Consider whether go-cmp would simplify comparisons.

Use table tests to validate the same logic with different data.

If your tests are independent (and they should be), use t.Parallel().