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table_test.go
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package tengo
import (
"fmt"
"strings"
"testing"
)
func TestTableGeneratedCreateStatement(t *testing.T) {
for nextAutoInc := uint64(1); nextAutoInc < 3; nextAutoInc++ {
table := aTable(nextAutoInc)
if table.GeneratedCreateStatement(FlavorUnknown) != table.CreateStatement {
t.Errorf("Generated DDL does not match actual DDL\nExpected:\n%s\nFound:\n%s", table.CreateStatement, table.GeneratedCreateStatement(FlavorUnknown))
}
}
table := anotherTable()
if table.GeneratedCreateStatement(FlavorUnknown) != table.CreateStatement {
t.Errorf("Generated DDL does not match actual DDL\nExpected:\n%s\nFound:\n%s", table.CreateStatement, table.GeneratedCreateStatement(FlavorUnknown))
}
table = unsupportedTable()
if table.GeneratedCreateStatement(FlavorUnknown) == table.CreateStatement {
t.Error("Expected unsupported table's generated DDL to differ from actual DDL, but they match")
}
}
func TestTableClusteredIndexKey(t *testing.T) {
table := aTable(1)
if table.ClusteredIndexKey() == nil || table.ClusteredIndexKey() != table.PrimaryKey {
t.Error("ClusteredIndexKey() did not return primary key when it was supposed to")
}
table.Engine = "MyISAM"
if table.ClusteredIndexKey() != nil {
t.Errorf("Expected ClusteredIndexKey() to return nil for non-InnoDB table, instead found %+v", table.ClusteredIndexKey())
}
table.Engine = "InnoDB"
table.PrimaryKey = nil
if table.ClusteredIndexKey() != table.SecondaryIndexes[0] {
t.Errorf("Expected ClusteredIndexKey() to return %+v, instead found %+v", table.SecondaryIndexes[0], table.ClusteredIndexKey())
}
table.SecondaryIndexes[0], table.SecondaryIndexes[1] = table.SecondaryIndexes[1], table.SecondaryIndexes[0]
if table.ClusteredIndexKey() != table.SecondaryIndexes[1] {
t.Errorf("Expected ClusteredIndexKey() to return %+v, instead found %+v", table.SecondaryIndexes[1], table.ClusteredIndexKey())
}
table.Columns[4].Nullable = true
if table.ClusteredIndexKey() != nil {
t.Errorf("Expected ClusteredIndexKey() to return nil for table with unique-but-nullable index, instead found %+v", table.ClusteredIndexKey())
}
table.Columns[4].Nullable = false
table.SecondaryIndexes[0].Unique = true
if table.ClusteredIndexKey() != table.SecondaryIndexes[1] {
t.Errorf("Expected ClusteredIndexKey() to return %+v, instead found %+v", table.SecondaryIndexes[1], table.ClusteredIndexKey())
}
table.Columns[2].Nullable = false
if table.ClusteredIndexKey() != table.SecondaryIndexes[0] {
t.Errorf("Expected ClusteredIndexKey() to return %+v, instead found %+v", table.SecondaryIndexes[0], table.ClusteredIndexKey())
}
}
func TestTableRowFormatClause(t *testing.T) {
assertRowFormatClause := func(createOptions, expectRowFormat string) {
t.Helper()
table := aTable(1)
table.CreateOptions = createOptions
if actual := table.RowFormatClause(); actual != expectRowFormat {
t.Errorf("Unexpected result from RowFormatClause() with CreateOptions=%s: expected %s, found %s", createOptions, expectRowFormat, actual)
}
}
cases := map[string]string{
"": "",
"FOO=BAR": "",
"ROW_FORMAT=DYNAMIC": "DYNAMIC",
"ROW_FORMAT=COMPRESSED": "COMPRESSED",
"ROW_FORMAT=COMPACT FOO=BAR": "COMPACT",
"FOO=BAR ROW_FORMAT=REDUNDANT BIP=BAP": "REDUNDANT",
"KEY_BLOCK_SIZE=8": "COMPRESSED",
"ROW_FORMAT=DYNAMIC KEY_BLOCK_SIZE=8": "DYNAMIC",
}
for createOptions, expectRowFormat := range cases {
assertRowFormatClause(createOptions, expectRowFormat)
}
}
func TestTableAlterAddOrDropColumn(t *testing.T) {
from := aTable(1)
to := aTable(1)
// Add a column to an arbitrary position
newCol := &Column{
Name: "age",
TypeInDB: "int unsigned",
Nullable: true,
Default: "NULL",
}
to.Columns = append(to.Columns, newCol)
colCount := len(to.Columns)
to.Columns[colCount-2], to.Columns[colCount-1] = to.Columns[colCount-1], to.Columns[colCount-2]
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported := from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok := tableAlters[0].(AddColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.Table != &to || ta.Column != newCol {
t.Error("Pointers in table alter do not point to expected values")
}
if ta.PositionFirst || ta.PositionAfter != to.Columns[colCount-3] || !strings.Contains(ta.Clause(StatementModifiers{}), " AFTER ") {
t.Errorf("Expected new column to be after `%s` / first=false, instead found after `%s` / first=%t", to.Columns[colCount-3].Name, ta.PositionAfter.Name, ta.PositionFirst)
}
// Reverse comparison should yield a drop-column
tableAlters, supported = to.Diff(&from)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta2, ok := tableAlters[0].(DropColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta2, tableAlters[0])
}
if ta2.Column != newCol {
t.Error("Pointer in table alter does not point to expected value")
}
// Add an addition column to first position
hadColumns := to.Columns
anotherCol := &Column{
Name: "net_worth",
TypeInDB: "decimal(9,2)",
Nullable: true,
Default: "NULL",
}
to.Columns = []*Column{anotherCol}
to.Columns = append(to.Columns, hadColumns...)
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
t.Fatalf("Incorrect number of table alters: expected 2, found %d", len(tableAlters))
}
ta, ok = tableAlters[0].(AddColumn)
if !ok {
t.Fatalf("Incorrect type of table alter[0] returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.Table != &to || ta.Column != anotherCol {
t.Error("Pointers in table alter[0] do not point to expected values")
}
if !ta.PositionFirst || ta.PositionAfter != nil || !strings.Contains(ta.Clause(StatementModifiers{}), " FIRST") {
t.Errorf("Expected first new column to be after nil / first=true, instead found after %v / first=%t", ta.PositionAfter, ta.PositionFirst)
}
// Add an additional column to the last position
anotherCol = &Column{
Name: "awards_won",
TypeInDB: "int unsigned",
Nullable: false,
Default: "'0'",
}
to.Columns = append(to.Columns, anotherCol)
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 3 || !supported {
t.Fatalf("Incorrect number of table alters: expected 3, found %d", len(tableAlters))
}
ta, ok = tableAlters[2].(AddColumn)
if !ok {
t.Fatalf("Incorrect type of table alter[2] returned: expected %T, found %T", ta, tableAlters[2])
}
if ta.Table != &to || ta.Column != anotherCol {
t.Error("Pointers in table alter[2] do not point to expected values")
}
if ta.PositionFirst || ta.PositionAfter != nil {
t.Errorf("Expected new column to be after nil / first=false, instead found after %v / first=%t", ta.PositionAfter, ta.PositionFirst)
}
}
func TestTableAlterAddOrDropIndex(t *testing.T) {
from := aTable(1)
to := aTable(1)
// Add a secondary index
newSecondary := &Index{
Name: "idx_alive_lastname",
Parts: []IndexPart{
{ColumnName: to.Columns[5].Name},
{ColumnName: to.Columns[2].Name, PrefixLength: 10},
},
Type: "BTREE",
}
to.SecondaryIndexes = append(to.SecondaryIndexes, newSecondary)
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported := from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok := tableAlters[0].(AddIndex)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.Index != newSecondary {
t.Error("Pointer in table alter does not point to expected value")
}
// Reverse comparison should yield a drop index
tableAlters, supported = to.Diff(&from)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta2, ok := tableAlters[0].(DropIndex)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta2, tableAlters[0])
}
if ta2.Index != newSecondary {
t.Error("Pointer in table alter does not point to expected value")
}
// Start over; change the last existing secondary index
to = aTable(1)
to.SecondaryIndexes[1].Unique = true
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
t.Fatalf("Incorrect number of table alters: expected 2, found %d", len(tableAlters))
}
ta2, ok = tableAlters[0].(DropIndex)
if !ok {
t.Fatalf("Incorrect type of table alter[0] returned: expected %T, found %T", ta2, tableAlters[0])
}
if ta2.Index != from.SecondaryIndexes[1] {
t.Error("Pointer in table alter[0] does not point to expected value")
}
ta, ok = tableAlters[1].(AddIndex)
if !ok {
t.Fatalf("Incorrect type of table alter[1] returned: expected %T, found %T", ta, tableAlters[1])
}
if ta.Index != to.SecondaryIndexes[1] {
t.Error("Pointer in table alter[1] does not point to expected value")
}
// Start over; change the primary key
to = aTable(1)
to.PrimaryKey.Parts = append(to.PrimaryKey.Parts, IndexPart{ColumnName: to.Columns[4].Name})
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
t.Fatalf("Incorrect number of table alters: expected 2, found %d", len(tableAlters))
}
ta2, ok = tableAlters[0].(DropIndex)
if !ok {
t.Fatalf("Incorrect type of table alter[0] returned: expected %T, found %T", ta2, tableAlters[0])
}
if ta2.Index != from.PrimaryKey {
t.Error("Pointer in table alter[0] does not point to expected value")
}
ta, ok = tableAlters[1].(AddIndex)
if !ok {
t.Fatalf("Incorrect type of table alter[1] returned: expected %T, found %T", ta, tableAlters[1])
}
if ta.Index != to.PrimaryKey {
t.Error("Pointer in table alter[1] does not point to expected value")
}
// Remove the primary key
to.PrimaryKey = nil
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta2, ok = tableAlters[0].(DropIndex)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta2, tableAlters[0])
}
if ta2.Index != from.PrimaryKey {
t.Error("Pointer in table alter does not point to expected value")
}
// Reverse comparison should yield an add PK
tableAlters, supported = to.Diff(&from)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok = tableAlters[0].(AddIndex)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.Index != from.PrimaryKey {
t.Error("Pointer in table alter does not point to expected value")
}
// Start over; change a secondary index to FULLTEXT
to = aTable(1)
to.SecondaryIndexes[1].Type = "FULLTEXT"
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
t.Fatalf("Incorrect number of table alters: expected 2, found %d", len(tableAlters))
}
ta2, ok = tableAlters[0].(DropIndex)
if !ok {
t.Fatalf("Incorrect type of table alter[0] returned: expected %T, found %T", ta2, tableAlters[0])
}
if ta2.Index != from.SecondaryIndexes[1] {
t.Error("Pointer in table alter[0] does not point to expected value")
}
ta, ok = tableAlters[1].(AddIndex)
if !ok {
t.Fatalf("Incorrect type of table alter[1] returned: expected %T, found %T", ta, tableAlters[1])
}
if ta.Index != to.SecondaryIndexes[1] {
t.Error("Pointer in table alter[1] does not point to expected value")
}
}
func TestTableAlterAddOrDropForeignKey(t *testing.T) {
from := anotherTable()
to := anotherTable()
// Add the foreign key constraint
newFk := &ForeignKey{
Name: "actor_fk",
ColumnNames: []string{to.Columns[0].Name},
ReferencedSchemaName: "", // leave blank to signal its the same schema as the current table
ReferencedTableName: "actor",
ReferencedColumnNames: []string{"actor_id"},
DeleteRule: "RESTRICT",
UpdateRule: "CASCADE",
}
to.ForeignKeys = append(to.ForeignKeys, newFk)
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
// Normal Comparison should yield add ForeignKey
tableAlters, supported := from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
taFk1, ok := tableAlters[0].(AddForeignKey)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", taFk1, tableAlters[0])
}
if taFk1.ForeignKey != newFk {
t.Error("Pointer in table alter does not point to expected value")
}
// Reverse comparison should yield a drop foreign key
tableAlters, supported = to.Diff(&from)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
taFk2, ok := tableAlters[0].(DropForeignKey)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", taFk2, tableAlters[0])
}
if taFk2.ForeignKey != newFk {
t.Error("Pointer in table alter does not point to expected value")
}
// New situation: changing an existing foreign key
from = foreignKeyTable()
to = foreignKeyTable()
to.ForeignKeys[1].UpdateRule = "SET NULL"
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
t.Fatalf("Incorrect number of table alters: expected 2, found %d", len(tableAlters))
}
taFk2, ok = tableAlters[0].(DropForeignKey)
if !ok {
t.Fatalf("Incorrect type of table alter[0] returned: expected %T, found %T", taFk2, tableAlters[0])
}
if taFk2.ForeignKey != from.ForeignKeys[1] {
t.Error("Pointer in table alter[0] does not point to expected value")
}
taFk1, ok = tableAlters[1].(AddForeignKey)
if !ok {
t.Fatalf("Incorrect type of table alter[1] returned: expected %T, found %T", taFk1, tableAlters[1])
}
if taFk1.ForeignKey != to.ForeignKeys[1] {
t.Error("Pointer in table alter[1] does not point to expected value")
}
// Changing the first FK should not affect 2nd FK, since FKs are not ordered
to = foreignKeyTable()
to.ForeignKeys[0].ReferencedSchemaName = ""
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
t.Fatalf("Incorrect number of table alters: expected 2, found %d", len(tableAlters))
}
taFk2, ok = tableAlters[0].(DropForeignKey)
if !ok {
t.Fatalf("Incorrect type of table alter[0] returned: expected %T, found %T", taFk2, tableAlters[0])
}
if taFk2.ForeignKey != from.ForeignKeys[0] {
t.Error("Pointer in table alter[0] does not point to expected value")
}
taFk1, ok = tableAlters[1].(AddForeignKey)
if !ok {
t.Fatalf("Incorrect type of table alter[1] returned: expected %T, found %T", taFk1, tableAlters[1])
}
if taFk1.ForeignKey != to.ForeignKeys[0] {
t.Error("Pointer in table alter[1] does not point to expected value")
}
}
func TestTableAlterAddIndexOrder(t *testing.T) {
from := aTable(1)
to := aTable(1)
// Add 10 secondary indexes, and ensure their order is preserved
for n := 0; n < 10; n++ {
to.SecondaryIndexes = append(to.SecondaryIndexes, &Index{
Name: fmt.Sprintf("newidx_%d", n),
Parts: []IndexPart{{ColumnName: to.Columns[0].Name}},
Type: "BTREE",
})
}
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported := from.Diff(&to)
if len(tableAlters) != 10 || !supported {
t.Fatalf("Incorrect number of table alters: expected 10, found %d, supported=%t", len(tableAlters), supported)
}
for n := 0; n < 10; n++ {
ta, ok := tableAlters[n].(AddIndex)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
expectName := fmt.Sprintf("newidx_%d", n)
if ta.Index.Name != expectName {
t.Errorf("Incorrect index order: expected alters[%d] to be index name %s, instead found %s", n, expectName, ta.Index.Name)
}
}
// Also modify an existing index, and ensure its corresponding drop + re-add
// comes before the other 10 adds
to.SecondaryIndexes[1].Parts[1].PrefixLength = 6
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 12 || !supported {
t.Fatalf("Incorrect number of table alters: expected 12, found %d, supported=%t", len(tableAlters), supported)
}
if ta, ok := tableAlters[0].(DropIndex); !ok {
t.Errorf("Expected alters[0] to be a DropIndex, instead found %T", ta)
}
if ta, ok := tableAlters[1].(AddIndex); !ok {
t.Errorf("Expected alters[1] to be an AddIndex, instead found %T", ta)
} else if ta.Index.Name != to.SecondaryIndexes[1].Name {
t.Errorf("Expected alters[1] to be on index %s, instead found %s", to.SecondaryIndexes[1].Name, ta.Index.Name)
}
// Revert previous change, and instead change visibility on first index. This
// should be handled by an ALTER INDEX clause, w/o any need to drop anything.
to.SecondaryIndexes[1].Parts[1].PrefixLength = from.SecondaryIndexes[1].Parts[1].PrefixLength
to.SecondaryIndexes[0].Invisible = true
to.CreateStatement = to.GeneratedCreateStatement(FlavorMySQL80)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 11 || !supported {
t.Fatalf("Incorrect number of table alters: expected 11, found %d, supported=%t", len(tableAlters), supported)
}
expectClause := "ALTER INDEX `idx_ssn` INVISIBLE"
if ta, ok := tableAlters[0].(AlterIndex); !ok {
t.Errorf("Expected alters[0] to be an AlterIndex, instead found %T", ta)
} else if ta.Index.Name != to.SecondaryIndexes[0].Name || !ta.NewInvisible {
t.Errorf("Unexpected values in AlterIndex: %+v", ta)
} else if clauseWithoutFlavor := ta.Clause(StatementModifiers{}); clauseWithoutFlavor != "" {
t.Errorf("Unexpected result for AlterIndex.Clause() without a MySQLish 8.0+ flavor: %q", clauseWithoutFlavor)
} else if clauseWithFlavor := ta.Clause(StatementModifiers{Flavor: FlavorPercona80}); clauseWithFlavor != expectClause {
t.Errorf("Unexpected result for AlterIndex.Clause() with a MySQLish 8.0+ flavor: %q", clauseWithFlavor)
} else if clauseWithFlavor := ta.Clause(StatementModifiers{Flavor: FlavorMariaDB106}); clauseWithFlavor != strings.ReplaceAll(expectClause, "INVISIBLE", "IGNORED") {
t.Errorf("Unexpected result for AlterIndex.Clause() with a MariaDB 10.6 flavor: %q", clauseWithFlavor)
}
// Also change another aspect of the first index. Now this should be a DROP for
// index [0], re-ADD for [0], DROP for index [1], re-ADD for [1], followed by
// 10 ADDs for the 10 new indexes.
to.SecondaryIndexes[0].Parts = append(to.SecondaryIndexes[0].Parts, IndexPart{
ColumnName: "last_name",
Descending: true,
})
to.CreateStatement = to.GeneratedCreateStatement(FlavorMySQL80)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 14 || !supported {
t.Fatalf("Incorrect number of table alters: expected 14, found %d, supported=%t", len(tableAlters), supported)
}
for n, ta := range tableAlters {
var ok bool
if n == 0 || n == 2 {
_, ok = ta.(DropIndex)
} else {
_, ok = ta.(AddIndex)
}
if !ok {
t.Errorf("Unexpected type of alter clause at position %d: %T", n, ta)
}
}
}
func TestTableAlterIndexReorder(t *testing.T) {
// Table with three secondary indexes:
// [0] is UNIQUE KEY `idx_ssn` (`ssn`)
// [1] is KEY `idx_actor_name` (`last_name`(10),`first_name`(1))
// [2] is KEY `idx_alive_lastname` (`alive`, `last_name`(10))
getTable := func() Table {
table := aTable(1)
table.SecondaryIndexes = append(table.SecondaryIndexes, &Index{
Name: "idx_alive_lastname",
Parts: []IndexPart{
{ColumnName: table.Columns[5].Name},
{ColumnName: table.Columns[2].Name, PrefixLength: 10},
},
Type: "BTREE",
})
table.CreateStatement = table.GeneratedCreateStatement(FlavorUnknown)
return table
}
assertClauses := func(from, to *Table, strict bool, format string, a ...interface{}) {
t.Helper()
td := NewAlterTable(from, to)
var clauses string
if td != nil {
var err error
clauses, err = td.Clauses(StatementModifiers{
StrictIndexOrder: strict,
Flavor: FlavorMySQL80,
})
if err != nil {
t.Fatalf("Unexpected error result from Clauses(): %s", err)
}
}
expected := fmt.Sprintf(format, a...)
if clauses != expected {
t.Errorf("Unexpected result from Clauses()\nExpected:\n %s\nFound:\n %s", expected, clauses)
}
}
from, to := getTable(), getTable()
orig := from.SecondaryIndexes
// Reorder to's last couple indexes ([1] and [2]). Resulting diff should
// drop [1] and re-add [1], but should manifest as a no-op statement unless
// mods.StrictIndexOrder enabled.
to.SecondaryIndexes[1], to.SecondaryIndexes[2] = to.SecondaryIndexes[2], to.SecondaryIndexes[1]
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, _ := from.Diff(&to)
if len(tableAlters) != 2 {
t.Errorf("Expected 2 clauses, instead found %d", len(tableAlters))
} else {
if drop, ok := tableAlters[0].(DropIndex); !ok {
t.Errorf("Expected tableAlters[0] to be %T, instead found %T", drop, tableAlters[0])
} else if drop.Index.Name != orig[1].Name {
t.Errorf("Expected tableAlters[0] to drop %s, instead dropped %s", orig[1].Name, drop.Index.Name)
}
if add, ok := tableAlters[1].(AddIndex); !ok {
t.Errorf("Expected tableAlters[1] to be %T, instead found %T", add, tableAlters[1])
} else if add.Index.Name != orig[1].Name {
t.Errorf("Expected tableAlters[1] to add %s, instead added %s", orig[1].Name, add.Index.Name)
}
assertClauses(&from, &to, false, "")
assertClauses(&from, &to, true, "DROP KEY `%s`, ADD %s", orig[1].Name, orig[1].Definition(FlavorUnknown))
}
// Clustered index key changes: same effect as mods.StrictIndexOrder
to.PrimaryKey = nil
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
assertClauses(&from, &to, false, "DROP PRIMARY KEY, DROP KEY `%s`, ADD %s", orig[1].Name, orig[1].Definition(FlavorUnknown))
assertClauses(&from, &to, true, "DROP PRIMARY KEY, DROP KEY `%s`, ADD %s", orig[1].Name, orig[1].Definition(FlavorUnknown))
// Restore to previous state, and then modify definition of [1] and visibility
// of [2]. Resulting diff should:
// * drop [1]
// * re-add the modified [1]
// * modify visibility of [2] (suppressed if mods.StrictIndexOrder)
// * drop [2] (suppressed unless mods.StrictIndexOrder)
// * re-add [2] (suppressed unless mods.StrictIndexOrder)
to = getTable()
to.SecondaryIndexes[1].Parts[1].PrefixLength = 8
to.SecondaryIndexes[2].Invisible = true
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, _ = from.Diff(&to)
if len(tableAlters) != 5 {
t.Errorf("Expected 5 clauses, instead found %d", len(tableAlters))
} else {
drop0, ok0 := tableAlters[0].(DropIndex)
add1, ok1 := tableAlters[1].(AddIndex)
alter2, ok2 := tableAlters[2].(AlterIndex)
drop3, ok3 := tableAlters[3].(DropIndex)
add4, ok4 := tableAlters[4].(AddIndex)
if !ok0 || !ok1 || !ok2 || !ok3 || !ok4 {
t.Errorf("One or more type mismatches; ok: %t %t %t %t %t", ok0, ok1, ok2, ok3, ok4)
} else {
if !alter2.alsoReordering {
t.Error("Expected AlterIndex.alsoReordering to be true, but it was not")
}
if drop0.Index.Name == drop3.Index.Name {
t.Errorf("Both drops refer to same index %s", drop0.Index.Name)
}
if add1.Index.Name != orig[1].Name || add1.Index.Parts[1].PrefixLength != 8 {
t.Errorf("tableAlters[1] does not match expectations; found %+v", add1.Index)
}
if !add4.Index.EqualsIgnoringVisibility(orig[2]) {
t.Errorf("tableAlters[4] does not match expectations; found %+v", add4.Index)
}
}
assertClauses(&from, &to, false, "DROP KEY `%s`, ADD %s, ALTER INDEX `%s` INVISIBLE", orig[1].Name, to.SecondaryIndexes[1].Definition(FlavorUnknown), orig[2].Name)
assertClauses(&from, &to, true, "DROP KEY `%s`, ADD %s, DROP KEY `%s`, ADD %s", orig[1].Name, to.SecondaryIndexes[1].Definition(FlavorUnknown), orig[2].Name, to.SecondaryIndexes[2].Definition(FlavorMySQL80))
}
// Adding a new index before [1] should also result in dropping the old [1]
// and [2], and then re-adding them back in that order. But statement should
// only refer to adding the new index unless mods.StrictIndexOrder used.
to = getTable()
newIdx := &Index{
Name: "idx_firstname",
Parts: []IndexPart{
{ColumnName: to.Columns[1].Name},
},
Type: "BTREE",
}
to.SecondaryIndexes = []*Index{to.SecondaryIndexes[0], newIdx, to.SecondaryIndexes[1], to.SecondaryIndexes[2]}
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, _ = from.Diff(&to)
if len(tableAlters) != 5 {
t.Errorf("Expected 5 clauses, instead found %d", len(tableAlters))
} else {
assertClauses(&from, &to, false, "ADD %s", newIdx.Definition(FlavorUnknown))
assertClauses(&from, &to, true, "ADD %s, DROP KEY `%s`, ADD %s, DROP KEY `%s`, ADD %s", newIdx.Definition(FlavorUnknown), orig[1].Name, orig[1].Definition(FlavorUnknown), orig[2].Name, orig[2].Definition(FlavorUnknown))
}
// The opposite operation -- dropping the new index that we put before [1] --
// should just result in a drop, no need to reorder anything
tableAlters, _ = to.Diff(&from)
if len(tableAlters) != 1 {
t.Errorf("Expected 1 clause, instead found %d", len(tableAlters))
} else {
if drop, ok := tableAlters[0].(DropIndex); !ok {
t.Errorf("Expected tableAlters[0] to be %T, instead found %T", drop, tableAlters[0])
} else if drop.Index.Name != newIdx.Name {
t.Errorf("Expected tableAlters[0] to drop %s, instead dropped %s", newIdx.Name, drop.Index.Name)
}
assertClauses(&to, &from, false, "DROP KEY `%s`", newIdx.Name)
assertClauses(&to, &from, true, "DROP KEY `%s`", newIdx.Name)
}
}
func TestTableAlterModifyColumn(t *testing.T) {
from := aTable(1)
to := aTable(1)
// Reposition a col to first position
movedColPos := 3
movedCol := to.Columns[movedColPos]
to.Columns = append(to.Columns[:movedColPos], to.Columns[movedColPos+1:]...)
to.Columns = append([]*Column{movedCol}, to.Columns...)
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported := from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok := tableAlters[0].(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.Table != &to || ta.OldColumn != from.Columns[movedColPos] || ta.NewColumn != movedCol {
t.Error("Pointers in table alter do not point to expected values")
}
if !ta.PositionFirst || ta.PositionAfter != nil || !strings.Contains(ta.Clause(StatementModifiers{}), " FIRST") {
t.Errorf("Expected modified column to be after nil / first=true, instead found after %v / first=%t", ta.PositionAfter, ta.PositionFirst)
}
// Reposition same col to last position
to = aTable(1)
movedCol = to.Columns[movedColPos]
shouldBeAfter := to.Columns[len(to.Columns)-1]
to.Columns = append(to.Columns[:movedColPos], to.Columns[movedColPos+1:]...)
to.Columns = append(to.Columns, movedCol)
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok = tableAlters[0].(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.PositionFirst || ta.PositionAfter != shouldBeAfter {
t.Errorf("Expected modified column to be after %s / first=false, instead found after %v / first=%t", shouldBeAfter.Name, ta.PositionAfter, ta.PositionFirst)
}
if !ta.NewColumn.Equals(ta.OldColumn) {
t.Errorf("Column definition unexpectedly changed: was %s, now %s", ta.OldColumn.Definition(FlavorUnknown, nil), ta.NewColumn.Definition(FlavorUnknown, nil))
}
// Repos to last position AND change column definition
movedCol.Nullable = !movedCol.Nullable
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok = tableAlters[0].(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.PositionFirst || ta.PositionAfter != shouldBeAfter {
t.Errorf("Expected modified column to be after %s / first=false, instead found after %v / first=%t", shouldBeAfter.Name, ta.PositionAfter, ta.PositionFirst)
}
if ta.NewColumn.Equals(ta.OldColumn) {
t.Errorf("Column definition unexpectedly NOT changed: still %s", ta.NewColumn.Definition(FlavorUnknown, nil))
}
// Start over; delete a col, move last col to its former position, and add a new col after that
// FROM: actor_id, first_name, last_name, last_updated, ssn, alive, alive_bit
// TO: actor_id, first_name, last_name, alive, alive_bit, age, ssn
// current move algo treats this as a move of ssn to be after alive, rather than alive to be after last_name
to = aTable(1)
newCol := &Column{
Name: "age",
TypeInDB: "int unsigned",
Nullable: true,
Default: "NULL",
}
to.Columns = append(to.Columns[0:3], to.Columns[5], to.Columns[6], newCol, to.Columns[4])
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 3 || !supported {
t.Fatalf("Incorrect number of table alters: expected 3, found %d", len(tableAlters))
}
// The alters should always be in this order: drops, modifications, adds
if drop, ok := tableAlters[0].(DropColumn); ok {
if drop.Column != from.Columns[3] {
t.Error("Pointer in table alter[0] does not point to expected value")
}
} else {
t.Errorf("Incorrect type of table alter[0] returned: expected %T, found %T", drop, tableAlters[0])
}
if modify, ok := tableAlters[1].(ModifyColumn); ok {
if modify.NewColumn.Name != "ssn" {
t.Error("Pointers in table alter[1] do not point to expected values")
}
if modify.PositionFirst || modify.PositionAfter.Name != "alive_bit" {
t.Errorf("Expected moved column to be after alive_bit / first=false, instead found after %v / first=%t", modify.PositionAfter, modify.PositionFirst)
}
} else {
t.Errorf("Incorrect type of table alter[1] returned: expected %T, found %T", modify, tableAlters[1])
}
if add, ok := tableAlters[2].(AddColumn); ok {
if add.PositionFirst || add.PositionAfter.Name != "alive_bit" {
t.Errorf("Expected new column to be after alive_bit / first=false, instead found after %v / first=%t", add.PositionAfter, add.PositionFirst)
}
} else {
t.Errorf("Incorrect type of table alter[2] returned: expected %T, found %T", add, tableAlters[2])
}
// Start over; just change a column definition without moving anything
to = aTable(1)
to.Columns[4].TypeInDB = "varchar(10)"
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok = tableAlters[0].(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.PositionFirst || ta.PositionAfter != nil {
t.Errorf("Expected modified column to not be moved, instead found after %v / first=%t", ta.PositionAfter, ta.PositionFirst)
}
if ta.NewColumn.Equals(from.Columns[4]) {
t.Errorf("Column definition unexpectedly NOT changed: still %s", ta.NewColumn.Definition(FlavorUnknown, nil))
}
// Start over; change one column and move another column
to = aTable(1)
to.Columns[4].TypeInDB = "char(12)"
to.Columns = []*Column{to.Columns[0], to.Columns[6], to.Columns[1], to.Columns[2], to.Columns[3], to.Columns[4], to.Columns[5]}
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if len(tableAlters) != 2 || !supported {
stmt, _ := NewAlterTable(&from, &to).Statement(StatementModifiers{})
t.Fatalf("Incorrect number of table alters: expected 2, found %d: %s", len(tableAlters), stmt)
}
for _, ta := range tableAlters {
mc, ok := ta.(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", mc, ta)
}
if mc.PositionAfter != nil {
if mc.PositionAfter.Name != to.Columns[0].Name {
t.Errorf("Re-ordered column expected to be AFTER %s, instead AFTER %s", to.Columns[0].Name, mc.PositionAfter.Name)
}
if mc.OldColumn.Definition(FlavorUnknown, nil) != mc.NewColumn.Definition(FlavorUnknown, nil) {
t.Error("Expected re-ordered column definition to remain unchanged, but it was modified")
}
} else if mc.NewColumn.TypeInDB != "char(12)" || mc.PositionAfter != nil || mc.PositionFirst {
t.Errorf("Unexpected alter: %s", mc.Clause(StatementModifiers{}))
}
}
// Start over; move 2 columns and verify that each column is only mentioned
// once in the generated ALTER
to = aTable(1)
to.Columns = []*Column{to.Columns[0], to.Columns[1], to.Columns[2], to.Columns[4], to.Columns[6], to.Columns[3], to.Columns[5]}
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
tableAlters, supported = from.Diff(&to)
if !supported {
t.Error("Expected diff to be supported, but it was not")
} else {
stmt, _ := NewAlterTable(&from, &to).Statement(StatementModifiers{})
if len(tableAlters) != 2 {
t.Errorf("Incorrect number of table alters: expected 2, found %d: %s", len(tableAlters), stmt)
}
seen := make(map[string]bool, len(to.Columns))
for _, ta := range tableAlters {
mc, ok := ta.(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", mc, ta)
}
if seen[mc.NewColumn.Name] {
t.Fatalf("Column %s illegally referenced in generated ALTER multiple times:\n%s", EscapeIdentifier(mc.NewColumn.Name), stmt)
}
seen[mc.NewColumn.Name] = true
}
}
}
func TestTableAlterNoModify(t *testing.T) {
// Compare to a table with no common columns, and confirm no MODIFY clauses
// present
from := aTable(1)
to := aTable(1)
for n := range to.Columns {
to.Columns[n].Name = fmt.Sprintf("xzy%s", to.Columns[n].Name)
}
to.CreateStatement = to.GeneratedCreateStatement(FlavorUnknown)
if tableAlters, supported := from.Diff(&to); !supported {
t.Error("Expected diff to be supported, but it was not")
} else {
for _, ta := range tableAlters {
if _, ok := ta.(ModifyColumn); ok {
t.Errorf("Unexpected ModifyColumn: %+v", ta)
}
}
}
}
// TestTableAlterModifyColumnRandomly performs 20 iterations of semi-random
// modifications to a table's columns ordering and types, and then confirms
// that running the ALTER actually has the expected effect. It is commented out
// because this is overkill for routine testing, but the code can be useful
// when changing deep parts of the diff logic, especially the column reordering
// algorithm.
/*
func (s TengoIntegrationSuite) TestTableAlterModifyColumnRandomly(t *testing.T) {
exec := func(query string) {
t.Helper()
db, err := s.d.Connect("testing", "")
if err != nil {
t.Fatalf("Unable to connect to DockerizedInstance: %s", err)
}
_, err = db.Exec(query)
if err != nil {
t.Fatalf("Error running query on DockerizedInstance.\nQuery: %s\nError: %s", query, err)
}
}
assertCreate := func(table *Table) {
t.Helper()
createStatement, err := s.d.ShowCreateTable("testing", table.Name)
if err != nil {
t.Fatalf("Unexpected query error: %s", err)
}
if createStatement != table.CreateStatement {
t.Errorf("Mismatch between actual and expected CREATE TABLE.\nActual:\n%s\nExpected:\n%s", createStatement, table.CreateStatement)
}
}
from := aTableForFlavor(s.d.Flavor(), 1)
for n := 0; n < 20; n++ {
to := aTableForFlavor(s.d.Flavor(), 1)
swaps := rand.Intn(len(to.Columns) + 1)
for swap := 0; swap < swaps; swap++ {
a := rand.Intn(len(to.Columns))
b := rand.Intn(len(to.Columns))
to.Columns[a], to.Columns[b] = to.Columns[b], to.Columns[a]
}
mods := rand.Intn(3)
for mod := 0; mod < mods; mod++ {
n := rand.Intn(len(to.Columns))
col := to.Columns[n]
switch col.TypeInDB {
case "varchar(45)":
col.TypeInDB = "varchar(55)"
case "char(10)":
col.TypeInDB = "char(12)"
case "tinyint(1)", "bit(1)":
col.Nullable = true
case "smallint(5) unsigned":
col.TypeInDB = "int(10) unsigned"
}
}
to.CreateStatement = to.GeneratedCreateStatement(s.d.Flavor())
exec(fmt.Sprintf("DROP TABLE IF EXISTS %s", from.Name))
exec(from.CreateStatement)
alter := NewAlterTable(&from, &to)
if alter == nil {
assertCreate(&to) // assert correct without any change
} else if !alter.supported {
t.Fatal("Expected diff to be supported, but it was not")
} else {
stmt, _ := alter.Statement(StatementModifiers{})
seen := make(map[string]bool, len(to.Columns))
for _, ta := range alter.alterClauses {
mc, ok := ta.(ModifyColumn)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", mc, ta)
}
if seen[mc.NewColumn.Name] {
t.Fatalf("Column %s illegally referenced in generated ALTER multiple times:\n%s", EscapeIdentifier(mc.NewColumn.Name), stmt)
}
seen[mc.NewColumn.Name] = true
}
exec(stmt)
assertCreate(&to)
}
}
}
*/
func TestTableAlterChangeStorageEngine(t *testing.T) {
getTableWithEngine := func(engine string) Table {
t := aTable(1)
t.Engine = engine
t.CreateStatement = t.GeneratedCreateStatement(FlavorUnknown)
return t
}
assertChangeEngine := func(a, b *Table, expected string) {
tableAlters, supported := a.Diff(b)
if expected == "" {
if len(tableAlters) != 0 || !supported {
t.Fatalf("Incorrect result from Table.Diff(): expected len=0, true; found len=%d, %t", len(tableAlters), supported)
}
return
}
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect result from Table.Diff(): expected len=1, supported=true; found len=%d, supported=%t", len(tableAlters), supported)
}
ta, ok := tableAlters[0].(ChangeStorageEngine)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if actual := ta.Clause(StatementModifiers{}); actual != expected {
t.Errorf("Incorrect ALTER TABLE clause returned; expected: %s; found: %s", expected, actual)
}
}
from := getTableWithEngine("InnoDB")
to := getTableWithEngine("InnoDB")
assertChangeEngine(&from, &to, "")
to = getTableWithEngine("MyISAM")
assertChangeEngine(&from, &to, "ENGINE=MyISAM")
assertChangeEngine(&to, &from, "ENGINE=InnoDB")
}
func TestTableAlterChangeAutoIncrement(t *testing.T) {
// Initial test: change next auto inc from 1 to 2
from := aTable(1)
to := aTable(2)
tableAlters, supported := from.Diff(&to)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok := tableAlters[0].(ChangeAutoIncrement)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.OldNextAutoIncrement != from.NextAutoIncrement || ta.NewNextAutoIncrement != to.NextAutoIncrement {
t.Error("Incorrect next-auto-increment values in alter clause")
}
// Reverse test: should emit an alter clause, even though higher-level caller
// may decide to ignore it
tableAlters, supported = to.Diff(&from)
if len(tableAlters) != 1 || !supported {
t.Fatalf("Incorrect number of table alters: expected 1, found %d", len(tableAlters))
}
ta, ok = tableAlters[0].(ChangeAutoIncrement)
if !ok {
t.Fatalf("Incorrect type of table alter returned: expected %T, found %T", ta, tableAlters[0])
}
if ta.OldNextAutoIncrement != to.NextAutoIncrement || ta.NewNextAutoIncrement != from.NextAutoIncrement {
t.Error("Incorrect next-auto-increment values in alter clause")
}