You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: migrate.go
    path of file: ./repos/graphql-engine/cli/integration_test/v3
    
    the code of the file until where you have to start completion: package v3

import (
	"encoding/json"
	"os"
	"path/filepath"
	"testing"

	"github.com/hasura/graphql-engine/cli/v2/internal/hasura"

	"github.com/hasura/graphql-engine/cli/v2"
	"github.com/hasura/graphql-engine/cli/v2/commands"
	"github.com/hasura/graphql-engine/cli/v2/migrate"
	"github.com/hasura/graphql-engine/cli/v2/util"
	"github.com/stretchr/testify/assert"
)

type migrateInterface interface {
	Run() error
}

func TestMigrateCmd(t *testing.T, ec *cli.ExecutionContext) {
	// copy migrations to ec.Execution.Directory/migrations
	os.RemoveAll(ec.MigrationDir)
	currDir, _ := os.Getwd()
	err := util.CopyDir(filepath.Join(currDir, "v3/migrations"), ec.MigrationDir)
	if err != nil {
		t.Fatalf("unable to copy migrations directory %v", err)
	}
	ec.Source.Name = "default"
	ec.Source.Kind = hasura.SourceKindPG
	tt := []struct {
		name   string
		opts   migrateInterface
		err    error
		status migrate.Status
	}{
		{"apply-up-all-migrations", &commands.MigrateApplyOptions{
			EC:     ec,
			Source: cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
			},
		}},
		{"apply-down-1-migration", &commands.MigrateApplyOptions{
			EC:            ec,
			DownMigration: "1",
			Source:        cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsAppl
    
func TestMigrateCmd(t *testing.T, ec *cli.ExecutionContext) {
	// copy migrations to ec.Execution.Directory/migrations
	os.RemoveAll(ec.MigrationDir)
	currDir, _ := os.Getwd()
	err := util.CopyDir(filepath.Join(currDir, "v3/migrations"), ec.MigrationDir)
	if err != nil {
		t.Fatalf("unable to copy migrations directory %v", err)
	}
	ec.Source.Name = "default"
	ec.Source.Kind = hasura.SourceKindPG
	tt := []struct {
		name   string
		opts   migrateInterface
		err    error
		status migrate.Status
	}{
		{"apply-up-all-migrations", &commands.MigrateApplyOptions{
			EC:     ec,
			Source: cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
			},
		}},
		{"apply-down-1-migration", &commands.MigrateApplyOptions{
			EC:            ec,
			DownMigration: "1",
			Source:        cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
			},
		}},
		{"apply-down-all-migration", &commands.MigrateApplyOptions{
			EC:            ec,
			DownMigration: "all",
			Source:        cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
			},
		}},
		{"apply-goto-2-migration", &commands.MigrateApplyOptions{
			EC:          ec,
			GotoVersion: "2",
			Source:      cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
			},
		}},
		{"apply-goto-nil-migration", &commands.MigrateApplyOptions{
			EC:          ec,
			GotoVersion: "-1",
			Source:      cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
			},
		}},
		{"apply-up-1-migration", &commands.MigrateApplyOptions{
			EC:          ec,
			UpMigration: "1",
			Source:      cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
			},
		}},
		{"apply-version-2-up-migration", &commands.MigrateApplyOptions{
			EC:               ec,
			VersionMigration: "2",
			Source:           cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
			},
		}},
		{"apply-version-2-down-migration", &commands.MigrateApplyOptions{
			EC:               ec,
			VersionMigration: "2",
			MigrationType:    "down",
			Source:           cli.Source{Name: "default", Kind: hasura.SourceKindPG},
		}, nil, migrate.Status{
			Index: []uint64{1, 2},
			Migrations: map[uint64]*migrate.MigrationStatus{
				1: &migrate.MigrationStatus{
					IsApplied: true,
					IsPresent: true,
				},
				2: &migrate.MigrationStatus{
					IsApplied: false,
					IsPresent: true,
				},
			},
		}},
	}

	for _, tc := range tt {
		t.Run(tc.name, func(t *testing.T) {
			err := tc.opts.Run()
			if err != tc.err {
				t.Fatalf("%s: expected %v, got %v", tc.name, tc.err, err)
			}

			expectedStatusByt, err := json.Marshal(tc.status)
			if err != nil {
				t.Fatal(err)
			}
			statusOpts := &commands.MigrateStatusOptions{
				EC:     ec,
				Source: cli.Source{Name: "default", Kind: hasura.SourceKindPG},
			}
			actualStatus, err := statusOpts.RunOnSource()
			if err != nil {
				t.Fatalf("%s: unable to fetch migrate status, got %v", tc.name, err)
			}
			actualStatusByt, err := json.Marshal(actualStatus)
			if err != nil {
				t.Fatal(err)
			}
			assert.Equal(t, string(expectedStatusByt), string(actualStatusByt))
		})
	}
}