chore: rename `databasefake` to `dbfake` (#7979)

* chore: rename `databasefake` to `dbfake`

* Remove unused method

coderd/database/dbfake/dbfake.go

@@ -27,13 +27,6 @@ import (
 
 var validProxyByHostnameRegex = regexp.MustCompile(`^[a-zA-Z0-9._-]+$`)
 
-// FakeDatabase is helpful for knowing if the underlying db is an in memory fake
-// database. This is only in the databasefake package, so will only be used
-// by unit tests.
-type FakeDatabase interface {
-	IsFakeDB()
-}
-
 var errDuplicateKey = &pq.Error{
 	Code:    "23505",
 	Message: "duplicate key value violates unique constraint",
@@ -218,7 +211,6 @@ func validateDatabaseType(args interface{}) error {
 	return nil
 }
 
-func (fakeQuerier) IsFakeDB() {}
 func (*fakeQuerier) Ping(_ context.Context) (time.Duration, error) {
 	return 0, nil
 }

coderd/database/dbfake/dbfake_test.go

@@ -3,8 +3,6 @@ package dbfake_test
 import (
 	"context"
 	"database/sql"
-	"fmt"
-	"reflect"
 	"sort"
 	"testing"
 	"time"
@@ -64,49 +62,6 @@ func TestInTx(t *testing.T) {
 	}
 }
 
-// TestExactMethods will ensure the fake database does not hold onto excessive
-// functions. The fake database is a manual implementation, so it is possible
-// we forget to delete functions that we remove. This unit test just ensures
-// we remove the extra methods.
-func TestExactMethods(t *testing.T) {
-	t.Parallel()
-
-	// extraFakeMethods contains the extra allowed methods that are not a part
-	// of the database.Store interface.
-	extraFakeMethods := map[string]string{
-		// Example
-		// "SortFakeLists": "Helper function used",
-		"IsFakeDB": "Helper function used for unit testing",
-	}
-
-	fake := reflect.TypeOf(dbfake.New())
-	fakeMethods := methods(fake)
-
-	store := reflect.TypeOf((*database.Store)(nil)).Elem()
-	storeMethods := methods(store)
-
-	// Store should be a subset
-	for k := range storeMethods {
-		_, ok := fakeMethods[k]
-		if !ok {
-			panic(fmt.Sprintf("This should never happen. FakeDB missing method %s, so doesn't fit the interface", k))
-		}
-		delete(storeMethods, k)
-		delete(fakeMethods, k)
-	}
-
-	for k := range fakeMethods {
-		_, ok := extraFakeMethods[k]
-		if ok {
-			continue
-		}
-		// If you are seeing this error, you have an extra function not required
-		// for the database.Store. If you still want to keep it, add it to
-		// 'extraFakeMethods' to allow it.
-		t.Errorf("Fake method '%s()' is excessive and not needed to fit interface, delete it", k)
-	}
-}
-
 // TestUserOrder ensures that the fake database returns users sorted by username.
 func TestUserOrder(t *testing.T) {
 	t.Parallel()
@@ -252,11 +207,3 @@ func TestProxyByHostname(t *testing.T) {
 		})
 	}
 }
-
-func methods(rt reflect.Type) map[string]bool {
-	methods := make(map[string]bool)
-	for i := 0; i < rt.NumMethod(); i++ {
-		methods[rt.Method(i).Name] = true
-	}
-	return methods
-}