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// Copyright (C) 2016 Yasuhiro Matsumoto <[email protected]>. | ||
// | ||
// Use of this source code is governed by an MIT-style | ||
// license that can be found in the LICENSE file. | ||
// +build trace | ||
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package sqlite3 | ||
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import ( | ||
"database/sql" | ||
"testing" | ||
) | ||
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type sumAggregator int64 | ||
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func (s *sumAggregator) Step(x int64) { | ||
*s += sumAggregator(x) | ||
} | ||
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func (s *sumAggregator) Done() int64 { | ||
return int64(*s) | ||
} | ||
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func TestAggregatorRegistration(t *testing.T) { | ||
customSum := func() *sumAggregator { | ||
var ret sumAggregator | ||
return &ret | ||
} | ||
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sql.Register("sqlite3_AggregatorRegistration", &SQLiteDriver{ | ||
ConnectHook: func(conn *SQLiteConn) error { | ||
if err := conn.RegisterAggregator("customSum", customSum, true); err != nil { | ||
return err | ||
} | ||
return nil | ||
}, | ||
}) | ||
db, err := sql.Open("sqlite3_AggregatorRegistration", ":memory:") | ||
if err != nil { | ||
t.Fatal("Failed to open database:", err) | ||
} | ||
defer db.Close() | ||
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_, err = db.Exec("create table foo (department integer, profits integer)") | ||
if err != nil { | ||
// trace feature is not implemented | ||
t.Skip("Failed to create table:", err) | ||
} | ||
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_, err = db.Exec("insert into foo values (1, 10), (1, 20), (2, 42)") | ||
if err != nil { | ||
t.Fatal("Failed to insert records:", err) | ||
} | ||
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tests := []struct { | ||
dept, sum int64 | ||
}{ | ||
{1, 30}, | ||
{2, 42}, | ||
} | ||
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for _, test := range tests { | ||
var ret int64 | ||
err = db.QueryRow("select customSum(profits) from foo where department = $1 group by department", test.dept).Scan(&ret) | ||
if err != nil { | ||
t.Fatal("Query failed:", err) | ||
} | ||
if ret != test.sum { | ||
t.Fatalf("Custom sum returned wrong value, got %d, want %d", ret, test.sum) | ||
} | ||
} | ||
} |
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@@ -1,5 +1,4 @@ | ||
// Copyright (C) 2016 Yasuhiro Matsumoto <[email protected]>. | ||
// TODO: add "Gimpl do foo" team? | ||
// | ||
// Use of this source code is governed by an MIT-style | ||
// license that can be found in the LICENSE file. | ||
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