Add acceptance test for VCL service resources.

fastly/fastly_test.go

@@ -1,13 +1,15 @@
 package fastly
 
 import (
+	"bytes"
 	"crypto/rand"
 	"encoding/hex"
 	"fmt"
 	"os"
 	"reflect"
 	"strings"
 	"testing"
+	"text/template"
 
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 )
@@ -143,3 +145,16 @@ func generateNames(unique string, size int) []string {
 	}
 	return names
 }
+
+// renderTestConfigTemplate is used in acceptance tests to render a
+// template and associated data into a Terraform 'configuration file'
+// (HCL)
+func renderTestConfigTemplate(t *testing.T, tmpl *template.Template, data any) string {
+	var output bytes.Buffer
+
+	err := tmpl.Execute(&output, data)
+	if err != nil {
+		t.Error(t)
+	}
+	return output.String()
+}

fastly/resource_fastly_service_vcl_test.go

@@ -5,6 +5,7 @@ import (
 	"regexp"
 	"strings"
 	"testing"
+	"text/template"
 
 	gofastly "github.com/fastly/go-fastly/v9/fastly"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/acctest"
@@ -399,6 +400,110 @@ func TestAccFastlyServiceVCL_disappears(t *testing.T) {
 	})
 }
 
+func TestAccFastlyServiceVCL_stage(t *testing.T) {
+	var service gofastly.ServiceDetail
+	name := fmt.Sprintf("tf-test-%s", acctest.RandString(10))
+	domain := fmt.Sprintf("fastly-test.tf-%s.com", acctest.RandString(10))
+	backendName1 := fmt.Sprintf("%s.aws.amazon.com", acctest.RandString(3))
+	backendName2 := fmt.Sprintf("%s.aws.amazon.com", acctest.RandString(3))
+	backendName3 := fmt.Sprintf("%s.aws.amazon.com", acctest.RandString(3))
+
+	type Config struct {
+		Name     string
+		Domain   string
+		Backends []string
+		Stage    bool
+	}
+
+	tmplText := `
+resource "fastly_service_vcl" "foo" {
+  name = "{{ .Name }}"
+
+  {{ if .Stage }}
+  activate = false
+  stage = true
+  {{ end }}
+
+  domain {
+    name    = "{{ .Domain }}"
+    comment = "tf-testing-domain"
+  }
+
+  {{ range .Backends }}
+  backend {
+    address = "{{ . }}"
+    name    = "tf-test backend {{ . }}"
+  }
+  {{ end }}
+
+  force_destroy = true
+}`
+
+	tmpl, err := template.New("test").Parse(tmplText)
+	if err != nil {
+		t.Error(err)
+	}
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck: func() {
+			testAccPreCheck(t)
+		},
+		ProviderFactories: testAccProviders,
+		CheckDestroy:      testAccCheckServiceVCLDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: renderTestConfigTemplate(t, tmpl, Config{
+					Name:     name,
+					Domain:   domain,
+					Backends: []string{backendName1},
+				}),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckServiceExists("fastly_service_vcl.foo", &service),
+					testAccCheckFastlyServiceVCLAttributesBackends(&service, name, []string{backendName1}),
+				),
+			},
+
+			{
+				Config: renderTestConfigTemplate(t, tmpl, Config{
+					Name:     name,
+					Domain:   domain,
+					Backends: []string{backendName1, backendName2},
+					Stage:    true,
+				}),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckServiceExists("fastly_service_vcl.foo", &service),
+					testAccCheckFastlyServiceVCLAttributesBackends(&service, name, []string{backendName1, backendName2}),
+					resource.TestCheckResourceAttr(
+						"fastly_service_vcl.foo", "active_version", "1"),
+					resource.TestCheckResourceAttr(
+						"fastly_service_vcl.foo", "staged_version", "2"),
+					resource.TestCheckResourceAttr(
+						"fastly_service_vcl.foo", "backend.#", "2"),
+				),
+			},
+
+			{
+				Config: renderTestConfigTemplate(t, tmpl, Config{
+					Name:     name,
+					Domain:   domain,
+					Backends: []string{backendName1, backendName2, backendName3},
+					Stage:    true,
+				}),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckServiceExists("fastly_service_vcl.foo", &service),
+					testAccCheckFastlyServiceVCLAttributesBackends(&service, name, []string{backendName1, backendName2, backendName3}),
+					resource.TestCheckResourceAttr(
+						"fastly_service_vcl.foo", "active_version", "1"),
+					resource.TestCheckResourceAttr(
+						"fastly_service_vcl.foo", "staged_version", "2"),
+					resource.TestCheckResourceAttr(
+						"fastly_service_vcl.foo", "backend.#", "3"),
+				),
+			},
+		},
+	})
+}
+
 func testAccCheckServiceExists(n string, service *gofastly.ServiceDetail) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		rs, ok := s.RootModule().Resources[n]