Golang testing: "no test files"

Question

I'm creating a simple test within my package directory called reverseTest.go

package main  import "testing"  func TestReverse(t *testing.T) {     cases := []struct {         in, want string     }{         {"Hello, world", "dlrow ,olleH"},         {"Hello, 世界", "界世 ,olleH"},         {"", ""},     }      for _, c := range cases {         got := Reverse(c.in)         if got != c.want {             t.Errorf("Reverse(%q) == %q, want %q", c.in, got, c.want)         }     } } 

whenever i try to run it the output is

exampleFolder[no test files]  

this is my go env

GOARCH="amd64" GOBIN="" GOCHAR="6" GOEXE="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOOS="linux" GOPATH="/home/juan/go" GORACE="" GOROOT="/usr/lib/go" GOTOOLDIR="/usr/lib/go/pkg/tool/linux_amd64" TERM="dumb" CC="gcc" GOGCCFLAGS="-g -O2 -fPIC -m64 -pthread" CXX="g++" CGO_ENABLED="1" 

Any help will be greatly appreciated. Thanks!!

Answer 1

Files containing tests should be called name_test, with the _test suffix. They should be alongside the code that they are testing.

To run the tests recursively call go test -v ./...

From How to Write Go Code:

You write a test by creating a file with a name ending in _test.go that contains functions named TestXXX with signature func (t *testing.T). The test framework runs each such function; if the function calls a failure function such as t.Error or t.Fail, the test is considered to have failed.