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304 lines
8.0 KiB
Go
304 lines
8.0 KiB
Go
package postgres_test
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import (
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"context"
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"database/sql"
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"fmt"
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"reflect"
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"strings"
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"testing"
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"github.com/neilotoole/sq/libsq/core/lg"
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"github.com/neilotoole/sq/libsq/core/errz"
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"github.com/neilotoole/sq/libsq/source"
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_ "github.com/jackc/pgx/v4/stdlib"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/neilotoole/sq/drivers/postgres"
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"github.com/neilotoole/sq/libsq/core/sqlmodel"
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"github.com/neilotoole/sq/libsq/core/stringz"
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"github.com/neilotoole/sq/testh"
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"github.com/neilotoole/sq/testh/fixt"
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"github.com/neilotoole/sq/testh/sakila"
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)
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func TestSmoke(t *testing.T) {
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t.Parallel()
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for _, handle := range sakila.PgAll() {
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handle := handle
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t.Run(handle, func(t *testing.T) {
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t.Parallel()
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th, src, _, _ := testh.NewWith(t, handle)
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sink, err := th.QuerySQL(src, "SELECT * FROM actor")
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require.NoError(t, err)
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require.Equal(t, len(sakila.TblActorCols()), len(sink.RecMeta))
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require.Equal(t, sakila.TblActorCount, len(sink.Recs))
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})
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}
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}
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func TestDriverBehavior(t *testing.T) {
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// This test was created to help understand the behavior of the driver impl.
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// It can be deleted eventually.
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testCases := sakila.PgAll()
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for _, handle := range testCases {
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handle := handle
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t.Run(handle, func(t *testing.T) {
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th := testh.New(t)
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src := th.Source(handle)
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db := th.Open(src).DB()
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query := `SELECT
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(SELECT actor_id FROM actor limit 1) AS actor_id,
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(SELECT first_name FROM actor LIMIT 1) AS first_name,
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(SELECT last_name FROM actor LIMIT 1) AS last_name
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LIMIT 1`
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rows, err := db.QueryContext(th.Context, query)
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require.NoError(t, err)
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require.NoError(t, rows.Err())
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t.Cleanup(func() { assert.NoError(t, rows.Close()) })
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colTypes, err := rows.ColumnTypes()
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require.NoError(t, err)
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for i, colType := range colTypes {
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nullable, ok := colType.Nullable()
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t.Logf("%d: %s %s %s nullable,ok={%v,%v}", i, colType.Name(), colType.DatabaseTypeName(),
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colType.ScanType().Name(), nullable, ok)
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if !nullable {
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scanType := colType.ScanType()
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z := reflect.Zero(scanType)
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t.Logf("zero: %T %v", z, z)
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}
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}
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})
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}
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}
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func Test_VerifyDriverDoesNotReportNullability(t *testing.T) {
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t.Parallel()
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// This test demonstrates that the backing pgx driver
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// does not report column nullability (as one might hope).
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//
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// When/if the driver is modified to behave as hoped (if
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// at all possible) then we can simplify the
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// postgres driver wrapper.
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testCases := sakila.PgAll()
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for _, handle := range testCases {
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handle := handle
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t.Run(handle, func(t *testing.T) {
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t.Parallel()
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th := testh.New(t)
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src := th.Source(handle)
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db := th.Open(src).DB()
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_, actualTblName := createTypeTestTable(th, src, true)
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t.Cleanup(func() { th.DropTable(src, actualTblName) })
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rows, err := db.Query("SELECT * FROM " + actualTblName)
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require.NoError(t, err)
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require.NoError(t, rows.Err())
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t.Cleanup(func() { assert.NoError(t, rows.Close()) })
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colTypes, err := rows.ColumnTypes()
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require.NoError(t, err)
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for _, colType := range colTypes {
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colName := colType.Name()
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// The _n suffix indicates a nullable col
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if !strings.HasSuffix(colName, "_n") {
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continue
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}
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// The col is indicated as nullable via its name/suffix
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nullable, hasNullable := colType.Nullable()
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require.False(t, hasNullable, "ColumnType.hasNullable is unfortunately expected to be false for {%s}",
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colName)
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require.False(t, nullable, "ColumnType.nullable is unfortunately expected to be false for {%s}", colName)
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}
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for rows.Next() {
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require.NoError(t, rows.Err())
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}
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})
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}
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}
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func TestGetTableColumnNames(t *testing.T) {
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testCases := sakila.PgAll()
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for _, handle := range testCases {
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handle := handle
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t.Run(handle, func(t *testing.T) {
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th := testh.New(t)
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src := th.Source(handle)
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colNames, err := postgres.GetTableColumnNames(th.Context, th.Open(src).DB(), sakila.TblActor)
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require.NoError(t, err)
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require.Equal(t, sakila.TblActorCols(), colNames)
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})
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}
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}
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func TestDriver_CreateTable_NotNullDefault(t *testing.T) {
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t.Parallel()
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testCases := sakila.PgAll()
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for _, handle := range testCases {
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handle := handle
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t.Run(handle, func(t *testing.T) {
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t.Parallel()
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th, src, dbase, drvr := testh.NewWith(t, handle)
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tblName := stringz.UniqTableName(t.Name())
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colNames, colKinds := fixt.ColNamePerKind(drvr.Dialect().IntBool, false, false)
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tblDef := sqlmodel.NewTableDef(tblName, colNames, colKinds)
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for _, colDef := range tblDef.Cols {
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colDef.NotNull = true
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colDef.HasDefault = true
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}
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err := drvr.CreateTable(th.Context, dbase.DB(), tblDef)
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require.NoError(t, err)
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t.Cleanup(func() { th.DropTable(src, tblName) })
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th.InsertDefaultRow(src, tblName)
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sink, err := th.QuerySQL(src, "SELECT * FROM "+tblName)
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require.NoError(t, err)
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require.Equal(t, 1, len(sink.Recs))
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require.Equal(t, len(colNames), len(sink.RecMeta))
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for i := range colNames {
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require.NotNil(t, sink.Recs[0][i])
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_, ok := sink.RecMeta[i].Nullable()
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require.False(t, ok, "postgres driver doesn't report nullability")
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}
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})
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}
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}
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// getAdminSource returns a new src that users the "postgres" user
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// instead of "sakila" user. This is useful if we need to create
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// databases, etc. A better solution is probably to change the
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// sakila DBs to grant all privileges to "sakila".
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func getAdminSakilaSource(src *source.Source) *source.Source {
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s := *src
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s.Location = strings.Replace(s.Location, "postgres://sakila:", "postgres://postgres:", 1)
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return &s
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}
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// TestAlternateSchema verifies that we can access a schema
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// other than the default ("public").
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func TestAlternateSchema(t *testing.T) {
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t.Parallel()
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th := testh.New(t)
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ctx := th.Context
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src := getAdminSakilaSource(th.Source(sakila.Pg))
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t.Logf("Using src: {%s}", src)
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dbase := th.Open(src)
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db := dbase.DB()
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require.NoError(t, db.Ping())
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schemaName := stringz.UniqSuffix("test_schema")
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err := createSchema(ctx, db, schemaName)
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t.Logf("Created schema {%s} in {%s}", schemaName, src)
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require.NoError(t, err)
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t.Cleanup(func() {
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assert.NoError(t, dropSchema(ctx, db, schemaName))
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})
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tblName := stringz.UniqSuffix("test_table")
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const wantRowCount = 5
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require.NoError(t, createSimpleTable(ctx, db, schemaName, tblName, wantRowCount))
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// We create a new src to point to the new schema.
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// We change the schema by setting the search_path param.
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src2 := src.Clone()
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src2.Handle += "2"
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src2.Location += "?search_path=" + schemaName
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dbase2 := th.Open(src2)
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md2, err := dbase2.SourceMetadata(ctx)
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require.NoError(t, err)
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require.Equal(t, schemaName, md2.Schema)
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tblMeta2, err := dbase2.TableMetadata(ctx, tblName)
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require.NoError(t, err)
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require.Equal(t, int64(wantRowCount), tblMeta2.RowCount)
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}
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func createSchema(ctx context.Context, db *sql.DB, name string) error {
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const tpl = `DROP SCHEMA IF EXISTS %q CASCADE;
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CREATE SCHEMA %q;`
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stmt := fmt.Sprintf(tpl, name, name)
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_, err := db.ExecContext(ctx, stmt)
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return err
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}
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func dropSchema(ctx context.Context, db *sql.DB, name string) error {
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const tpl = `DROP SCHEMA IF EXISTS %q CASCADE;`
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stmt := fmt.Sprintf(tpl, name)
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_, err := db.ExecContext(ctx, stmt)
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return err
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}
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func createSimpleTable(ctx context.Context, db *sql.DB, schemaName, tblName string, insertRowCount int) error {
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const tpl = `CREATE TABLE %q.%q
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(
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id serial PRIMARY KEY,
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NAME VARCHAR(255)
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);`
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stmt := fmt.Sprintf(tpl, schemaName, tblName)
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_, err := db.ExecContext(ctx, stmt)
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if err != nil {
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return errz.Err(err)
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}
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stmt = fmt.Sprintf("INSERT INTO %q.%q (NAME) VALUES ($1)", schemaName, tblName)
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for i := 0; i < insertRowCount; i++ {
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_, err = db.ExecContext(ctx, stmt, fmt.Sprintf("name-%d", i))
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if err != nil {
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return errz.Err(err)
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}
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}
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return nil
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}
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func BenchmarkDatabase_SourceMetadata(b *testing.B) {
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for _, handle := range sakila.PgAll() {
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handle := handle
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b.Run(handle, func(b *testing.B) {
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th := testh.New(b)
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th.Log = lg.Discard()
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dbase := th.Open(th.Source(handle))
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b.ResetTimer()
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md, err := dbase.SourceMetadata(th.Context)
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require.NoError(b, err)
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require.Equal(b, "sakila", md.Name)
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})
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}
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}
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