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76 lines
2.4 KiB
Go
76 lines
2.4 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/genjidb/genji/internal/query"
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"github.com/genjidb/genji/internal/query/statement"
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"github.com/genjidb/genji/internal/sql/parser"
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"github.com/genjidb/genji/internal/stream"
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"github.com/genjidb/genji/internal/testutil"
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"github.com/genjidb/genji/internal/testutil/assert"
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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(stream.TableScan("test")).Pipe(stream.TableDelete("test"))},
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{"WithCond", "DELETE FROM test WHERE age = 10",
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stream.New(stream.TableScan("test")).
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Pipe(stream.DocsFilter(parser.MustParseExpr("age = 10"))).
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Pipe(stream.TableDelete("test")),
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},
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{"WithOffset", "DELETE FROM test WHERE age = 10 OFFSET 20",
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stream.New(stream.TableScan("test")).
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Pipe(stream.DocsFilter(parser.MustParseExpr("age = 10"))).
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Pipe(stream.DocsSkip(20)).
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Pipe(stream.TableDelete("test")),
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},
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{"WithLimit", "DELETE FROM test LIMIT 10",
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stream.New(stream.TableScan("test")).
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Pipe(stream.DocsTake(10)).
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Pipe(stream.TableDelete("test")),
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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(stream.TableScan("test")).
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Pipe(stream.DocsFilter(parser.MustParseExpr("age = 10"))).
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Pipe(stream.DocsTempTreeSort(parser.MustParseExpr("age"))).
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Pipe(stream.DocsSkip(20)).
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Pipe(stream.TableDelete("test")),
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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(stream.TableScan("test")).
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Pipe(stream.DocsFilter(parser.MustParseExpr("age = 10"))).
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Pipe(stream.DocsTempTreeSort(parser.MustParseExpr("age"))).
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Pipe(stream.DocsSkip(20)).
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Pipe(stream.DocsTake(10)).
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Pipe(stream.TableDelete("test")),
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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 := testutil.NewTestDB(t)
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testutil.MustExec(t, db, nil, "CREATE TABLE test")
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q, err := parser.ParseQuery(test.s)
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assert.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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})
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assert.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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