Build constraints exclude all Go files (macOS with Go 1.18.3) [duplicate] - go

Question

This question already has an answer here:
golang build constraints exclude all Go files in
(1 answer)
Closed 8 months ago.
I am new to Go and terratest. I have the following terratest
package main
import (
"regexp"
"testing"
"github.com/gruntwork-io/terratest/modules/terraform"
"github.com/stretchr/testify/assert"
)
func TestS3Creation(t *testing.T) {
t.Parallel()
terraformOptions := terraform.WithDefaultRetryableErrors(t, &terraform.Options{
TerraformDir: "./unit-test",
})
defer terraform.Destroy(t, terraformOptions)
terraform.InitAndApply(t, terraformOptions)
bastionSecurityGroup := terraform.Output(t, terraformOptions, "bastion_security_group")
assert.Regexp(t, regexp.MustCompile(`^sg-*`), bastionSecurityGroup)
}
I initialised it as follows:
go mod init github.com/myorg/terraform-bastion-linux
When trying to run it with go test -v I get the error:
package github.com/myorg/terraform-bastion-linux: build constraints exclude all Go files in /Users/george/terraform-bastion-linux/test
My environment is as follows:
macOS Big Sur 11.6.4
CPU: Intel i9
terraform --version
Terraform v1.2.3
on darwin_amd64
go version
go version go1.18.3 darwin/amd64
I have no env variables set that start with GO, for example, env|grep GO returns nothing as result.
As advised in:
build constraints exclude all Go files in
build constraints exclude all Go files
I have tried adding the following on top of the file
//+build darwin,cgo linux
//go:build (darwin && cgo) || linux
And also exporting the GOOS and GOARCH env variables
export GOOS=darwin
export GOARCH=amd64
But I still get the same error.
How to troubleshoot this issue?
What can I try in order to run the test successfully?

Answer 1

As commented by JimB, the problem was that the filename included the word linux, which Go interpreted as a build constraint to only run on Linux and not Darwin. I am new to Go, and it appears to be terribly misleading with such errors. I didn't even include the file name in my original question as I thought it would be irrelevant.