package template import ( "fmt" "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"}`, `${b}`, `bar`}, } var testSteps []r.TestStep for i, step := range steps { testSteps = append(testSteps, r.TestStep{ Config: testTemplateConfig(step.template, step.vars), Check: func(i int, want string) r.TestCheckFunc { return func(s *terraform.State) error { got := s.RootModule().Outputs["rendered"] if want != got { return fmt.Errorf("[%d] got:\n%q\nwant:\n%q\n", i, got, want) } return nil } }(i, step.want), }) } r.Test(t, r.TestCase{ Providers: testProviders, Steps: testSteps, }) } func testTemplateConfig(template, vars string) string { return fmt.Sprintf(` resource "template_file" "t0" { template = "%s" vars = %s } output "rendered" { value = "${template_file.t0.rendered}" }`, template, vars) }