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

     1  // Copyright 2020-2021 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 rowexec
    16  
    17  import (
    18  	"io"
    19  	"testing"
    20  
    21  	"github.com/stretchr/testify/require"
    22  
    23  	"github.com/dolthub/go-mysql-server/memory"
    24  	"github.com/dolthub/go-mysql-server/sql"
    25  	"github.com/dolthub/go-mysql-server/sql/plan"
    26  	"github.com/dolthub/go-mysql-server/sql/types"
    27  )
    28  
    29  func TestCreateTable(t *testing.T) {
    30  	require := require.New(t)
    31  
    32  	db := memory.NewDatabase("test")
    33  	pro := memory.NewDBProvider(db)
    34  
    35  	tables := db.Tables()
    36  	_, ok := tables["testTable"]
    37  	require.False(ok)
    38  
    39  	s := sql.NewPrimaryKeySchema(sql.Schema{
    40  		{Name: "c1", Type: types.Text},
    41  		{Name: "c2", Type: types.Int32},
    42  	})
    43  
    44  	ctx := newContext(pro)
    45  	require.NoError(createTable(t, ctx, db, "testTable", s, plan.IfNotExistsAbsent, plan.IsTempTableAbsent))
    46  
    47  	tables = db.Tables()
    48  
    49  	newTable, ok := tables["testTable"]
    50  	require.True(ok)
    51  
    52  	require.Equal(newTable.Schema(), s.Schema)
    53  
    54  	for _, s := range newTable.Schema() {
    55  		require.Equal("testTable", s.Source)
    56  	}
    57  
    58  	require.Error(createTable(t, ctx, db, "testTable", s, plan.IfNotExistsAbsent, plan.IsTempTableAbsent))
    59  	require.NoError(createTable(t, ctx, db, "testTable", s, plan.IfNotExists, plan.IsTempTableAbsent))
    60  }
    61  
    62  func TestDropTable(t *testing.T) {
    63  	require := require.New(t)
    64  
    65  	db := memory.NewDatabase("test")
    66  	pro := memory.NewDBProvider(db)
    67  	ctx := newContext(pro)
    68  
    69  	s := sql.NewPrimaryKeySchema(sql.Schema{
    70  		{Name: "c1", Type: types.Text},
    71  		{Name: "c2", Type: types.Int32},
    72  	})
    73  
    74  	require.NoError(createTable(t, ctx, db, "testTable1", s, plan.IfNotExistsAbsent, plan.IsTempTableAbsent))
    75  	require.NoError(createTable(t, ctx, db, "testTable2", s, plan.IfNotExistsAbsent, plan.IsTempTableAbsent))
    76  	require.NoError(createTable(t, ctx, db, "testTable3", s, plan.IfNotExistsAbsent, plan.IsTempTableAbsent))
    77  
    78  	d := plan.NewDropTable([]sql.Node{
    79  		plan.NewResolvedTable(memory.NewTable(db.BaseDatabase, "testTable1", s, db.GetForeignKeyCollection()), db, nil),
    80  		plan.NewResolvedTable(memory.NewTable(db.BaseDatabase, "testTable2", s, db.GetForeignKeyCollection()), db, nil),
    81  	}, false)
    82  	rows, err := DefaultBuilder.Build(ctx, d, nil)
    83  	require.NoError(err)
    84  
    85  	r, err := rows.Next(ctx)
    86  	require.Nil(err)
    87  	require.Equal(sql.NewRow(types.NewOkResult(0)), r)
    88  
    89  	r, err = rows.Next(ctx)
    90  	require.Equal(io.EOF, err)
    91  
    92  	_, ok := db.Tables()["testTable1"]
    93  	require.False(ok)
    94  	_, ok = db.Tables()["testTable2"]
    95  	require.False(ok)
    96  	_, ok = db.Tables()["testTable3"]
    97  	require.True(ok)
    98  
    99  	d = plan.NewDropTable([]sql.Node{plan.NewResolvedTable(memory.NewTable(db.Database(), "testTable1", s, db.GetForeignKeyCollection()), db, nil)}, false)
   100  	_, err = DefaultBuilder.Build(ctx, d, nil)
   101  	require.Error(err)
   102  
   103  	d = plan.NewDropTable([]sql.Node{plan.NewResolvedTable(memory.NewTable(db.Database(), "testTable3", s, db.GetForeignKeyCollection()), db, nil)}, false)
   104  	_, err = DefaultBuilder.Build(ctx, d, nil)
   105  	require.NoError(err)
   106  
   107  	_, ok = db.Tables()["testTable3"]
   108  	require.False(ok)
   109  }
   110  
   111  func createTable(t *testing.T, ctx *sql.Context, db sql.Database, name string, schema sql.PrimaryKeySchema, ifNotExists plan.IfNotExistsOption, temporary plan.TempTableOption) error {
   112  	c := plan.NewCreateTable(db, name, ifNotExists, temporary, &plan.TableSpec{Schema: schema})
   113  
   114  	rows, err := DefaultBuilder.Build(ctx, c, nil)
   115  	if err != nil {
   116  		return err
   117  	}
   118  
   119  	r, err := rows.Next(ctx)
   120  	require.Nil(t, err)
   121  	require.Equal(t, sql.NewRow(types.NewOkResult(0)), r)
   122  
   123  	r, err = rows.Next(ctx)
   124  	require.Equal(t, io.EOF, err)
   125  	return nil
   126  }