feat: auto generated files and new structure (#4)

## 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: #4
Reviewed-by: Andre_Harms <andre.harms@stackit.cloud>
Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>
Co-committed-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

stackit/internal/wait/sqlserverflexalpha/wait_test.go

@@ -0,0 +1,260 @@
+// Copyright (c) STACKIT
+
+package sqlserverflexalpha
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	sqlserverflex "github.com/mhenselin/terraform-provider-stackitprivatepreview/pkg/sqlserverflexalpha"
+	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
+	"github.com/stackitcloud/stackit-sdk-go/core/utils"
+)
+
+// Used for testing instance operations
+type apiClientInstanceMocked struct {
+	instanceId        string
+	instanceState     string
+	instanceNetwork   sqlserverflex.InstanceNetwork
+	instanceIsDeleted bool
+	instanceGetFails  bool
+}
+
+func (a *apiClientInstanceMocked) GetInstanceRequestExecute(_ context.Context, _, _, _ string) (*sqlserverflex.GetInstanceResponse, error) {
+	if a.instanceGetFails {
+		return nil, &oapierror.GenericOpenAPIError{
+			StatusCode: 500,
+		}
+	}
+
+	if a.instanceIsDeleted {
+		return nil, &oapierror.GenericOpenAPIError{
+			StatusCode: 404,
+		}
+	}
+
+	return &sqlserverflex.GetInstanceResponse{
+		Id:      &a.instanceId,
+		Status:  sqlserverflex.GetInstanceResponseGetStatusAttributeType(&a.instanceState),
+		Network: &a.instanceNetwork,
+	}, nil
+}
+func TestCreateInstanceWaitHandler(t *testing.T) {
+	t.Skip("skipping - needs refactoring")
+	tests := []struct {
+		desc                string
+		instanceGetFails    bool
+		instanceState       string
+		instanceNetwork     sqlserverflex.InstanceNetwork
+		usersGetErrorStatus int
+		wantErr             bool
+		wantRes             *sqlserverflex.GetInstanceResponse
+	}{
+		{
+			desc:             "create_succeeded",
+			instanceGetFails: false,
+			instanceState:    InstanceStateSuccess,
+			instanceNetwork: sqlserverflex.InstanceNetwork{
+				AccessScope:     nil,
+				Acl:             nil,
+				InstanceAddress: utils.Ptr("10.0.0.1"),
+				RouterAddress:   utils.Ptr("10.0.0.2"),
+			},
+			wantErr: false,
+			wantRes: &sqlserverflex.GetInstanceResponse{
+				BackupSchedule: nil,
+				Edition:        nil,
+				Encryption:     nil,
+				FlavorId:       nil,
+				Id:             nil,
+				IsDeletable:    nil,
+				Name:           nil,
+				Network: &sqlserverflex.InstanceNetwork{
+					AccessScope:     nil,
+					Acl:             nil,
+					InstanceAddress: utils.Ptr("10.0.0.1"),
+					RouterAddress:   utils.Ptr("10.0.0.2"),
+				},
+				Replicas:      nil,
+				RetentionDays: nil,
+				Status:        nil,
+				Storage:       nil,
+				Version:       nil,
+			},
+		},
+		{
+			desc:             "create_failed",
+			instanceGetFails: false,
+			instanceState:    InstanceStateFailed,
+			wantErr:          true,
+			wantRes:          nil,
+		},
+		{
+			desc:             "create_failed_2",
+			instanceGetFails: false,
+			instanceState:    InstanceStateEmpty,
+			wantErr:          true,
+			wantRes:          nil,
+		},
+		{
+			desc:             "instance_get_fails",
+			instanceGetFails: true,
+			wantErr:          true,
+			wantRes:          nil,
+		},
+		{
+			desc:             "timeout",
+			instanceGetFails: false,
+			instanceState:    InstanceStateProcessing,
+			wantErr:          true,
+			wantRes:          nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.desc, func(t *testing.T) {
+			instanceId := "foo-bar"
+
+			apiClient := &apiClientInstanceMocked{
+				instanceId:       instanceId,
+				instanceState:    tt.instanceState,
+				instanceGetFails: tt.instanceGetFails,
+			}
+
+			handler := CreateInstanceWaitHandler(context.Background(), apiClient, "", instanceId, "")
+
+			gotRes, err := handler.SetTimeout(10 * time.Millisecond).SetSleepBeforeWait(1 * time.Millisecond).WaitWithContext(context.Background())
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("handler error = %v, wantErr %v", err, tt.wantErr)
+			}
+
+			if !cmp.Equal(gotRes, tt.wantRes) {
+				t.Fatalf("handler gotRes = %v, want %v", gotRes, tt.wantRes)
+			}
+		})
+	}
+}
+
+func TestUpdateInstanceWaitHandler(t *testing.T) {
+	t.Skip("skipping - needs refactoring")
+	tests := []struct {
+		desc             string
+		instanceGetFails bool
+		instanceState    string
+		wantErr          bool
+		wantResp         bool
+	}{
+		{
+			desc:             "update_succeeded",
+			instanceGetFails: false,
+			instanceState:    InstanceStateSuccess,
+			wantErr:          false,
+			wantResp:         true,
+		},
+		{
+			desc:             "update_failed",
+			instanceGetFails: false,
+			instanceState:    InstanceStateFailed,
+			wantErr:          true,
+			wantResp:         true,
+		},
+		{
+			desc:             "update_failed_2",
+			instanceGetFails: false,
+			instanceState:    InstanceStateEmpty,
+			wantErr:          true,
+			wantResp:         true,
+		},
+		{
+			desc:             "get_fails",
+			instanceGetFails: true,
+			wantErr:          true,
+			wantResp:         false,
+		},
+		{
+			desc:             "timeout",
+			instanceGetFails: false,
+			instanceState:    InstanceStateProcessing,
+			wantErr:          true,
+			wantResp:         true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.desc, func(t *testing.T) {
+			instanceId := "foo-bar"
+
+			apiClient := &apiClientInstanceMocked{
+				instanceId:       instanceId,
+				instanceState:    tt.instanceState,
+				instanceGetFails: tt.instanceGetFails,
+			}
+
+			var wantRes *sqlserverflex.GetInstanceResponse
+			if tt.wantResp {
+				wantRes = &sqlserverflex.GetInstanceResponse{
+					Id:     &instanceId,
+					Status: sqlserverflex.GetInstanceResponseGetStatusAttributeType(utils.Ptr(tt.instanceState)),
+				}
+			}
+
+			handler := UpdateInstanceWaitHandler(context.Background(), apiClient, "", instanceId, "")
+
+			gotRes, err := handler.SetTimeout(10 * time.Millisecond).SetSleepBeforeWait(1 * time.Millisecond).WaitWithContext(context.Background())
+
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("handler error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if !cmp.Equal(gotRes, wantRes) {
+				t.Fatalf("handler gotRes = %v, want %v", gotRes, wantRes)
+			}
+		})
+	}
+}
+
+func TestDeleteInstanceWaitHandler(t *testing.T) {
+	tests := []struct {
+		desc             string
+		instanceGetFails bool
+		instanceState    string
+		wantErr          bool
+	}{
+		{
+			desc:             "delete_succeeded",
+			instanceGetFails: false,
+			instanceState:    InstanceStateSuccess,
+			wantErr:          false,
+		},
+		{
+			desc:             "delete_failed",
+			instanceGetFails: false,
+			instanceState:    InstanceStateFailed,
+			wantErr:          true,
+		},
+		{
+			desc:             "get_fails",
+			instanceGetFails: true,
+			wantErr:          true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.desc, func(t *testing.T) {
+			instanceId := "foo-bar"
+
+			apiClient := &apiClientInstanceMocked{
+				instanceGetFails:  tt.instanceGetFails,
+				instanceIsDeleted: tt.instanceState == InstanceStateSuccess,
+				instanceId:        instanceId,
+				instanceState:     tt.instanceState,
+			}
+
+			handler := DeleteInstanceWaitHandler(context.Background(), apiClient, "", instanceId, "")
+
+			_, err := handler.SetTimeout(10 * time.Millisecond).WaitWithContext(context.Background())
+
+			if (err != nil) != tt.wantErr {
+				t.Fatalf("handler error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}