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70 lines
3.7 KiB
Go
70 lines
3.7 KiB
Go
package statement_test
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import (
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"testing"
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"github.com/genjidb/genji"
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"github.com/stretchr/testify/require"
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)
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func TestExplainStmt(t *testing.T) {
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tests := []struct {
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query string
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fails bool
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expected string
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}{
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{"EXPLAIN SELECT 1 + 1", false, `"project(1 + 1)"`},
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{"EXPLAIN SELECT * FROM noexist", true, ``},
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{"EXPLAIN SELECT * FROM test", false, `"seqScan(test)"`},
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{"EXPLAIN SELECT *, a FROM test", false, `"seqScan(test) | project(*, a)"`},
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{"EXPLAIN SELECT a + 1 FROM test", false, `"seqScan(test) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 10", false, `"seqScan(test) | filter(c > 10) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 10 AND d > 20", false, `"seqScan(test) | filter(c > 10) | filter(d > 20) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 10 OR d > 20", false, `"seqScan(test) | filter(c > 10 OR d > 20) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c IN [1 + 1, 2 + 2]", false, `"seqScan(test) | filter(c IN [2, 4]) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE a > 10", false, `"indexScan(\"idx_a\", [10, -1, true]) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE x = 10 AND y > 5", false, `"indexScan(\"idx_x_y\", [[10, 5], -1, true]) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE a > 10 AND b > 20 AND c > 30", false, `"indexScan(\"idx_b\", [20, -1, true]) | filter(a > 10) | filter(c > 30) | project(a + 1)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 30 ORDER BY d LIMIT 10 OFFSET 20", false, `"seqScan(test) | filter(c > 30) | project(a + 1) | sort(d) | skip(20) | take(10)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 30 ORDER BY d DESC LIMIT 10 OFFSET 20", false, `"seqScan(test) | filter(c > 30) | project(a + 1) | sortReverse(d) | skip(20) | take(10)"`},
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// {"EXPLAIN SELECT a + 1 FROM test WHERE c > 30 ORDER BY a DESC LIMIT 10 OFFSET 20", false, `"indexScanReverse(\"idx_a\") | filter(c > 30) | project(a + 1) | skip(20) | take(10)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 30 ORDER BY a DESC LIMIT 10 OFFSET 20", false, `"seqScan(test) | filter(c > 30) | project(a + 1) | sortReverse(a) | skip(20) | take(10)"`},
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{"EXPLAIN SELECT a + 1 FROM test WHERE c > 30 GROUP BY a + 1 ORDER BY a DESC LIMIT 10 OFFSET 20", false, `"seqScan(test) | filter(c > 30) | groupBy(a + 1) | hashAggregate() | project(a + 1) | sortReverse(a) | skip(20) | take(10)"`},
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{"EXPLAIN UPDATE test SET a = 10", false, `"seqScan(test) | set(a, 10) | tableReplace('test')"`},
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{"EXPLAIN UPDATE test SET a = 10 WHERE c > 10", false, `"seqScan(test) | filter(c > 10) | set(a, 10) | tableReplace('test')"`},
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{"EXPLAIN UPDATE test SET a = 10 WHERE a > 10", false, `"indexScan(\"idx_a\", [10, -1, true]) | set(a, 10) | tableReplace('test')"`},
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{"EXPLAIN DELETE FROM test", false, `"seqScan(test) | tableDelete('test')"`},
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{"EXPLAIN DELETE FROM test WHERE c > 10", false, `"seqScan(test) | filter(c > 10) | tableDelete('test')"`},
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{"EXPLAIN DELETE FROM test WHERE a > 10", false, `"indexScan(\"idx_a\", [10, -1, true]) | tableDelete('test')"`},
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}
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for _, test := range tests {
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t.Run(test.query, func(t *testing.T) {
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db, err := genji.Open(":memory:")
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require.NoError(t, err)
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defer db.Close()
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err = db.Exec("CREATE TABLE test (k INTEGER PRIMARY KEY)")
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require.NoError(t, err)
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err = db.Exec(`
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CREATE INDEX idx_a ON test (a);
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CREATE UNIQUE INDEX idx_b ON test (b);
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CREATE INDEX idx_x_y ON test (x, y);
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`)
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require.NoError(t, err)
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d, err := db.QueryDocument(test.query)
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if test.fails {
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require.Error(t, err)
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return
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}
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require.NoError(t, err)
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v, err := d.GetByField("plan")
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require.NoError(t, err)
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require.JSONEq(t, test.expected, v.String())
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})
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}
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}
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