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86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
package parser_test
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import (
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"context"
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"testing"
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"github.com/chaisql/chai/internal/query"
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"github.com/chaisql/chai/internal/query/statement"
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"github.com/chaisql/chai/internal/sql/parser"
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"github.com/chaisql/chai/internal/stream"
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"github.com/chaisql/chai/internal/stream/rows"
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"github.com/chaisql/chai/internal/stream/table"
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"github.com/chaisql/chai/internal/testutil"
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"github.com/stretchr/testify/require"
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)
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func TestParserDelete(t *testing.T) {
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tests := []struct {
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name string
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s string
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expected *stream.Stream
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}{
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{"NoCond", "DELETE FROM test", stream.New(table.Scan("test")).Pipe(table.Delete("test")).
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Pipe(stream.Discard())},
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{"WithCond", "DELETE FROM test WHERE age = 10",
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stream.New(table.Scan("test")).
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Pipe(rows.Filter(parser.MustParseExpr("age = 10"))).
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Pipe(table.Delete("test")).
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Pipe(stream.Discard()),
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},
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{"WithOffset", "DELETE FROM test WHERE age = 10 OFFSET 20",
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stream.New(table.Scan("test")).
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Pipe(rows.Filter(parser.MustParseExpr("age = 10"))).
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Pipe(rows.Skip(parser.MustParseExpr("20"))).
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Pipe(table.Delete("test")).
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Pipe(stream.Discard()),
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},
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{"WithLimit", "DELETE FROM test LIMIT 10",
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stream.New(table.Scan("test")).
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Pipe(rows.Take(parser.MustParseExpr("10"))).
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Pipe(table.Delete("test")).
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Pipe(stream.Discard()),
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},
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{"WithOrderByThenOffset", "DELETE FROM test WHERE age = 10 ORDER BY age OFFSET 20",
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stream.New(table.Scan("test")).
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Pipe(rows.Filter(parser.MustParseExpr("age = 10"))).
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Pipe(rows.TempTreeSort(parser.MustParseExpr("age"))).
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Pipe(rows.Skip(parser.MustParseExpr("20"))).
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Pipe(table.Delete("test")).
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Pipe(stream.Discard()),
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},
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{"WithOrderByThenLimitThenOffset", "DELETE FROM test WHERE age = 10 ORDER BY age LIMIT 10 OFFSET 20",
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stream.New(table.Scan("test")).
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Pipe(rows.Filter(parser.MustParseExpr("age = 10"))).
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Pipe(rows.TempTreeSort(parser.MustParseExpr("age"))).
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Pipe(rows.Skip(parser.MustParseExpr("20"))).
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Pipe(rows.Take(parser.MustParseExpr("10"))).
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Pipe(table.Delete("test")).
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Pipe(stream.Discard()),
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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db, tx, cleanup := testutil.NewTestTx(t)
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defer cleanup()
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testutil.MustExec(t, db, tx, "CREATE TABLE test(age int)")
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q, err := parser.ParseQuery(test.s)
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require.NoError(t, err)
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err = q.Prepare(&query.Context{
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Ctx: context.Background(),
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DB: db,
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Conn: tx.Connection(),
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})
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require.NoError(t, err)
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require.Len(t, q.Statements, 1)
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require.EqualValues(t, &statement.PreparedStreamStmt{Stream: test.expected}, q.Statements[0].(*statement.PreparedStreamStmt))
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})
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}
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}
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