github.com/dolthub/go-mysql-server@v0.18.0/sql/analyzer/catalog_test.go (about)

     1  // Copyright 2021 Dolthub, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package analyzer
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  
    22  	"github.com/dolthub/go-mysql-server/memory"
    23  	"github.com/dolthub/go-mysql-server/sql"
    24  )
    25  
    26  func TestAllDatabases(t *testing.T) {
    27  	require := require.New(t)
    28  
    29  	var dbs = []sql.Database{
    30  		memory.NewDatabase("a"),
    31  		memory.NewDatabase("b"),
    32  		memory.NewDatabase("c"),
    33  	}
    34  
    35  	c := NewCatalog(sql.NewDatabaseProvider(dbs...))
    36  
    37  	databases := c.AllDatabases(sql.NewEmptyContext())
    38  	require.Equal(4, len(databases))
    39  	require.Equal("information_schema", databases[0].Name())
    40  	require.Equal(dbs, databases[1:])
    41  }
    42  
    43  func TestCatalogDatabase(t *testing.T) {
    44  	require := require.New(t)
    45  
    46  	mydb := memory.NewDatabase("foo")
    47  	c := NewCatalog(sql.NewDatabaseProvider(mydb))
    48  
    49  	db, err := c.Database(sql.NewEmptyContext(), "flo")
    50  	require.EqualError(err, "database not found: flo, maybe you mean foo?")
    51  	require.Nil(db)
    52  
    53  	db, err = c.Database(sql.NewEmptyContext(), "foo")
    54  	require.NoError(err)
    55  	require.Equal(mydb, db)
    56  }
    57  
    58  func TestCatalogTable(t *testing.T) {
    59  	require := require.New(t)
    60  
    61  	db := memory.NewDatabase("foo")
    62  	pro := memory.NewDBProvider(db)
    63  	ctx := newContext(pro)
    64  	c := NewCatalog(pro)
    65  
    66  	table, _, err := c.Table(ctx, "foo", "bar")
    67  	require.EqualError(err, "table not found: bar")
    68  	require.Nil(table)
    69  
    70  	mytable := memory.NewTable(db, "bar", sql.PrimaryKeySchema{PkOrdinals: []int{}}, db.GetForeignKeyCollection())
    71  	db.AddTable("bar", mytable)
    72  
    73  	table, _, err = c.Table(ctx, "foo", "baz")
    74  	require.EqualError(err, "table not found: baz, maybe you mean bar?")
    75  	require.Nil(table)
    76  
    77  	table, _, err = c.Table(ctx, "foo", "bar")
    78  	require.NoError(err)
    79  	require.Equal(mytable, table)
    80  
    81  	table, _, err = c.Table(ctx, "foo", "BAR")
    82  	require.NoError(err)
    83  	require.Equal(mytable, table)
    84  }
    85  
    86  func TestCatalogUnlockTables(t *testing.T) {
    87  	require := require.New(t)
    88  	db := memory.NewDatabase("db")
    89  	pro := memory.NewDBProvider(db)
    90  	c := NewCatalog(pro)
    91  	ctx := newContext(pro)
    92  
    93  	t1 := newLockableTable(memory.NewTable(db, "t1", sql.PrimaryKeySchema{}, db.GetForeignKeyCollection()))
    94  	t2 := newLockableTable(memory.NewTable(db, "t2", sql.PrimaryKeySchema{}, db.GetForeignKeyCollection()))
    95  	db.AddTable("t1", t1)
    96  	db.AddTable("t2", t2)
    97  
    98  	ctx.SetCurrentDatabase(db.Name())
    99  	c.LockTable(ctx, "t1")
   100  	c.LockTable(ctx, "t2")
   101  
   102  	require.NoError(c.UnlockTables(ctx, ctx.ID()))
   103  
   104  	require.Equal(1, t1.unlocks)
   105  	require.Equal(1, t2.unlocks)
   106  }
   107  
   108  type lockableTable struct {
   109  	sql.Table
   110  	unlocks int
   111  }
   112  
   113  func (l *lockableTable) IgnoreSessionData() bool {
   114  	return true
   115  }
   116  
   117  func (l *lockableTable) UnderlyingTable() *memory.Table {
   118  	return nil
   119  }
   120  
   121  func newLockableTable(t sql.Table) *lockableTable {
   122  	return &lockableTable{Table: t}
   123  }
   124  
   125  var _ sql.Lockable = (*lockableTable)(nil)
   126  
   127  func (l *lockableTable) Lock(ctx *sql.Context, write bool) error {
   128  	return nil
   129  }
   130  
   131  func (l *lockableTable) Unlock(ctx *sql.Context, id uint32) error {
   132  	l.unlocks++
   133  	return nil
   134  }