Golden File Testing in Go
In traditional unit testing, specifying expected outputs directly within the test function is common. However, when dealing with complex data structures, such as a large tree, this approach can become unwieldy. Enter golden file testing.
Golden file testing alleviates the burden of manually specifying expected outputs by storing them in separate files. Each test case has its own file containing the expected output, typically stored in a designated directory (commonly named "testdata" and placed adjacent to the test file).