chore: add tests (#48)

## Description

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At least please give us some description what you are trying to achieve and why your change is needed. -->

relates to #1234

## Checklist

- [ ] Issue was linked above
- [ ] Code format was applied: `make fmt`
- [ ] Examples were added / adjusted (see `examples/` directory)
- [x] Docs are up-to-date: `make generate-docs` (will be checked by CI)
- [ ] Unit tests got implemented or updated
- [ ] Acceptance tests got implemented or updated (see e.g. [here](f5f99d1709/stackit/internal/services/dns/dns_acc_test.go))
- [x] Unit tests are passing: `make test` (will be checked by CI)
- [x] No linter issues: `make lint` (will be checked by CI)

Reviewed-on: #48
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Co-committed-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

stackit/internal/services/postgresflexalpha/postgresflex_acc_test.go

@@ -110,6 +110,20 @@ type resData struct {
 	AccessScope            string
 	RetentionDays          uint32
 	Version                string
+	Users                  []User
+	Databases              []Database
+}
+
+type User struct {
+	Name      string
+	ProjectId string
+	Roles     []string
+}
+
+type Database struct {
+	Name      string
+	ProjectId string
+	Owner     string
 }
 
 func getExample() resData {
@@ -133,7 +147,7 @@ func getExample() resData {
 	}
 }
 
-func TestAccResourceExample_basic(t *testing.T) {
+func TestAccInstance(t *testing.T) {
 	exData := getExample()
 	resName := fmt.Sprintf(
 		"stackitprivatepreview_postgresflexalpha_instance.%s",
@@ -195,6 +209,107 @@ func TestAccResourceExample_basic(t *testing.T) {
 	})
 }
 
+func TestAccInstanceWithUsers(t *testing.T) {
+	data := getExample()
+	userName := "testUser"
+	data.Users = []User{
+		{
+			Name:      userName,
+			ProjectId: os.Getenv("TF_ACC_PROJECT_ID"),
+			Roles:     []string{"login"},
+		},
+	}
+
+	resName := fmt.Sprintf(
+		"stackitprivatepreview_postgresflexalpha_instance.%s",
+		data.TfName,
+	)
+
+	resUserName := fmt.Sprintf(
+		"stackitprivatepreview_postgresflexalpha_user.%s",
+		userName,
+	)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:                 func() { testAccPreCheck(t) },
+		ProtoV6ProviderFactories: testutils.TestAccProtoV6ProviderFactories,
+		Steps: []resource.TestStep{
+			// Create and verify
+			{
+				Config: testutils.StringFromTemplateMust(
+					"testdata/instance_template.gompl",
+					data,
+				),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					resource.TestCheckResourceAttr(resName, "name", data.Name),
+					resource.TestCheckResourceAttrSet(resName, "id"),
+					resource.TestCheckResourceAttr(resUserName, "name", userName),
+					resource.TestCheckResourceAttrSet(resUserName, "id"),
+				),
+			},
+		},
+	})
+}
+
+func TestAccInstanceWithDatabases(t *testing.T) {
+	data := getExample()
+	dbName := "testDb"
+	userName := "testUser"
+	data.Users = []User{
+		{
+			Name:      userName,
+			ProjectId: os.Getenv("TF_ACC_PROJECT_ID"),
+			Roles:     []string{"login"},
+		},
+	}
+
+	data.Databases = []Database{
+		{
+			Name:      dbName,
+			ProjectId: os.Getenv("TF_ACC_PROJECT_ID"),
+			Owner:     userName,
+		},
+	}
+
+	resName := fmt.Sprintf(
+		"stackitprivatepreview_postgresflexalpha_instance.%s",
+		data.TfName,
+	)
+
+	resUserName := fmt.Sprintf(
+		"stackitprivatepreview_postgresflexalpha_user.%s",
+		userName,
+	)
+
+	resDbName := fmt.Sprintf(
+		"stackitprivatepreview_postgresflexalpha_database.%s",
+		dbName,
+	)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:                 func() { testAccPreCheck(t) },
+		ProtoV6ProviderFactories: testutils.TestAccProtoV6ProviderFactories,
+		Steps: []resource.TestStep{
+			// Create and verify
+			{
+				Config: testutils.StringFromTemplateMust(
+					"testdata/instance_template.gompl",
+					data,
+				),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					resource.TestCheckResourceAttr(resName, "name", data.Name),
+					resource.TestCheckResourceAttrSet(resName, "id"),
+					resource.TestCheckResourceAttr(resUserName, "name", userName),
+					resource.TestCheckResourceAttrSet(resUserName, "id"),
+					resource.TestCheckResourceAttr(resDbName, "name", dbName),
+					resource.TestCheckResourceAttr(resDbName, "owner", userName),
+					resource.TestCheckResourceAttrSet(resDbName, "id"),
+				),
+			},
+		},
+	})
+}
+
 //func setupMockServer() *httptest.Server {
 //	mux := http.NewServeMux()
 //

stackit/internal/services/postgresflexalpha/testdata/instance_template.gompl

@@ -28,3 +28,27 @@ resource "stackitprivatepreview_postgresflexalpha_instance" "{{ .TfName }}" {
   }
   version = {{ .Version }}
 }
+
+{{ if .Users }}
+{{ $tfName := .TfName }}
+{{ range $user := .Users }}
+resource "stackitprivatepreview_postgresflexalpha_user" "{{ $user.Name }}" {
+  project_id  = "{{ $user.ProjectId }}"
+  instance_id = stackitprivatepreview_postgresflexalpha_instance.{{ $tfName }}.instance_id
+  name    = "{{ $user.Name }}"
+  roles       = [{{ range $i, $v := $user.Roles }}{{if $i}},{{end}}"{{$v}}"{{end}}]
+}
+{{ end }}
+{{ end }}
+
+{{ if .Databases }}
+{{ $tfName := .TfName }}
+{{ range $db := .Databases }}
+resource "stackitprivatepreview_postgresflexalpha_database" "{{ $db.Name }}" {
+  project_id  = "{{ $db.ProjectId }}"
+  instance_id = stackitprivatepreview_postgresflexalpha_instance.{{ $tfName }}.instance_id
+  name        = "{{ $db.Name }}"
+  owner       = "{{ $db.Owner }}"
+}
+{{ end }}
+{{ end }}