terraform/builtin/providers/template/resource_template_file_test.go

113 lines
2.6 KiB
Go

package template
import (
"fmt"
"sync"
"testing"
r "github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/terraform"
)
var testProviders = map[string]terraform.ResourceProvider{
"template": Provider(),
}
func TestTemplateRendering(t *testing.T) {
var cases = []struct {
vars string
template string
want string
}{
{`{}`, `ABC`, `ABC`},
{`{a="foo"}`, `${a}`, `foo`},
{`{a="hello"}`, `${replace(a, "ello", "i")}`, `hi`},
{`{}`, `${1+2+3}`, `6`},
}
for _, tt := range cases {
r.Test(t, r.TestCase{
Providers: testProviders,
Steps: []r.TestStep{
r.TestStep{
Config: testTemplateConfig(tt.template, tt.vars),
Check: func(s *terraform.State) error {
got := s.RootModule().Outputs["rendered"]
if tt.want != got {
return fmt.Errorf("template:\n%s\nvars:\n%s\ngot:\n%s\nwant:\n%s\n", tt.template, tt.vars, got, tt.want)
}
return nil
},
},
},
})
}
}
// https://github.com/hashicorp/terraform/issues/2344
func TestTemplateVariableChange(t *testing.T) {
steps := []struct {
vars string
template string
want string
}{
{`{a="foo"}`, `${a}`, `foo`},
{`{b="bar"}`, `${b}`, `bar`},
}
var testSteps []r.TestStep
for i, step := range steps {
testSteps = append(testSteps, r.TestStep{
Config: testTemplateConfig(step.template, step.vars),
Check: func(i int, want string) r.TestCheckFunc {
return func(s *terraform.State) error {
got := s.RootModule().Outputs["rendered"]
if want != got {
return fmt.Errorf("[%d] got:\n%q\nwant:\n%q\n", i, got, want)
}
return nil
}
}(i, step.want),
})
}
r.Test(t, r.TestCase{
Providers: testProviders,
Steps: testSteps,
})
}
// This test covers a panic due to config.Func formerly being a
// shared map, causing multiple template_file resources to try and
// accessing it parallel during their lang.Eval() runs.
//
// Before fix, test fails under `go test -race`
func TestTemplateSharedMemoryRace(t *testing.T) {
var wg sync.WaitGroup
for i := 0; i < 100; i++ {
go func(wg sync.WaitGroup, t *testing.T, i int) {
wg.Add(1)
out, err := execute("don't panic!", map[string]interface{}{})
if err != nil {
t.Fatalf("err: %s", err)
}
if out != "don't panic!" {
t.Fatalf("bad output: %s", out)
}
wg.Done()
}(wg, t, i)
}
wg.Wait()
}
func testTemplateConfig(template, vars string) string {
return fmt.Sprintf(`
resource "template_file" "t0" {
template = "%s"
vars = %s
}
output "rendered" {
value = "${template_file.t0.rendered}"
}`, template, vars)
}