在一个软件包下运行go测试时，如何在测试以及覆盖率报告中跳过go文件

Question

I want to skip a particular go file under a package, while running the go test and coverage. Please find the below command, I have used to run under my service package :

cd src/service && go test --coverprofile coverageService.out --coverpkg ./.

Answer 1

Unfortunately there's no simple way to skip tests based solely on the file name, however, here are three simple options which may work:

1. Specify tests using a regular expression

The go test command supports the -run runtime option which only runs tests satisfying a regular expression:

-run regexp

Run only those tests and examples matching the regular expression. For tests, the regular expression is split by unbracketed slash (/) characters into a sequence of regular expressions, and each part of a test's identifier must match the corresponding element in the sequence, if any. Note that possible parents of matches are run too, so that -run=X/Y matches and runs and reports the result of all tests matching X, even those without sub-tests matching Y, because it must run them to look for those sub-tests.

In order for this to work, you will need to name all of the tests in the file in question in such a way that you can exclude them via a regular expression (for example, make all of them start with TestExcludable..., such as TestExcludableA, TestExludableB, etc). Then run using a slightly hacky negative regular expression, such as -run "Test[^E][^x][^c][^l][^u][^d][^a][^b][^l][^e].*"

2. Don't compile certain tests using build flags

As explained in detail in this stackoverflow post, you can use build flags to prevent a particular file from building as part of the test suite. In a nutshell,

skip_test.go

// +build !skipset1
package name

import testing

// Rest of test file

Then when you invoke go test us the -tags parameter and specify the tests you would like to skip, such as -tags skipset1.

3. Rename the offending file during the build

As specified in the go test docs,

Files whose names begin with "_" (including "_test.go") or "." are ignored.

Simply surround your go test command with a rename so that the file to skip is not actually compiled into the test executable:

mv src/skip_test.go src/_skip_test.go && go test ... || mv src/_skip_test.go src/skip_test.go

(note the use of an || and in the second move, to cause it to run even if the go test fails).