Exemplo n.º 1
0
func (s *testColumnSuite) TestGetZeroValue(c *C) {
	cases := []struct {
		ft    *types.FieldType
		value types.Datum
	}{
		{
			types.NewFieldType(mysql.TypeLong),
			types.NewIntDatum(0),
		},
		{
			&types.FieldType{
				Tp:   mysql.TypeLonglong,
				Flag: mysql.UnsignedFlag,
			},
			types.NewUintDatum(0),
		},
		{
			types.NewFieldType(mysql.TypeFloat),
			types.NewFloat32Datum(0),
		},
		{
			types.NewFieldType(mysql.TypeDouble),
			types.NewFloat64Datum(0),
		},
		{
			types.NewFieldType(mysql.TypeNewDecimal),
			types.NewDecimalDatum(mysql.NewDecimalFromInt(0, 0)),
		},
		{
			types.NewFieldType(mysql.TypeVarchar),
			types.NewStringDatum(""),
		},
		{
			types.NewFieldType(mysql.TypeBlob),
			types.NewBytesDatum([]byte{}),
		},
		{
			types.NewFieldType(mysql.TypeDuration),
			types.NewDurationDatum(mysql.ZeroDuration),
		},
		{
			types.NewFieldType(mysql.TypeDatetime),
			types.NewDatum(mysql.ZeroDatetime),
		},
		{
			types.NewFieldType(mysql.TypeTimestamp),
			types.NewDatum(mysql.ZeroTimestamp),
		},
		{
			types.NewFieldType(mysql.TypeDate),
			types.NewDatum(mysql.ZeroDate),
		},
		{
			types.NewFieldType(mysql.TypeBit),
			types.NewDatum(mysql.Bit{Value: 0, Width: mysql.MinBitWidth}),
		},
		{
			types.NewFieldType(mysql.TypeSet),
			types.NewDatum(mysql.Set{}),
		},
	}
	for _, ca := range cases {
		colInfo := &model.ColumnInfo{FieldType: *ca.ft}
		zv := getZeroValue(colInfo)
		c.Assert(zv.Kind(), Equals, ca.value.Kind())
		cmp, err := zv.CompareDatum(ca.value)
		c.Assert(err, IsNil)
		c.Assert(cmp, Equals, 0)
	}
}
Exemplo n.º 2
0
// TODO: add more tests.
func (s *testEvalSuite) TestEval(c *C) {
	colID := int64(1)
	row := make(map[int64]types.Datum)
	row[colID] = types.NewIntDatum(100)
	xevaluator := &Evaluator{Row: row}
	cases := []struct {
		expr   *tipb.Expr
		result types.Datum
	}{
		// Datums.
		{
			datumExpr(types.NewFloat32Datum(1.1)),
			types.NewFloat32Datum(1.1),
		},
		{
			datumExpr(types.NewFloat64Datum(1.1)),
			types.NewFloat64Datum(1.1),
		},
		{
			datumExpr(types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			datumExpr(types.NewUintDatum(1)),
			types.NewUintDatum(1),
		},
		{
			datumExpr(types.NewBytesDatum([]byte("abc"))),
			types.NewBytesDatum([]byte("abc")),
		},
		{
			datumExpr(types.NewStringDatum("abc")),
			types.NewStringDatum("abc"),
		},
		{
			datumExpr(types.Datum{}),
			types.Datum{},
		},
		{
			datumExpr(types.NewDurationDatum(mysql.Duration{Duration: time.Hour})),
			types.NewDurationDatum(mysql.Duration{Duration: time.Hour}),
		},
		{
			datumExpr(types.NewDecimalDatum(mysql.NewDecFromFloatForTest(1.1))),
			types.NewDecimalDatum(mysql.NewDecFromFloatForTest(1.1)),
		},
		{
			columnExpr(1),
			types.NewIntDatum(100),
		},
		// Comparison operations.
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(1), tipb.ExprType_LT),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(1), types.NewIntDatum(100), tipb.ExprType_LT),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.Datum{}, tipb.ExprType_LT),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(1), tipb.ExprType_LE),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(1), types.NewIntDatum(1), tipb.ExprType_LE),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.Datum{}, tipb.ExprType_LE),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(1), tipb.ExprType_EQ),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(100), tipb.ExprType_EQ),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.Datum{}, tipb.ExprType_EQ),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(100), tipb.ExprType_NE),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(1), tipb.ExprType_NE),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.Datum{}, tipb.ExprType_NE),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(1), types.NewIntDatum(100), tipb.ExprType_GE),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(100), tipb.ExprType_GE),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.Datum{}, tipb.ExprType_GE),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(100), tipb.ExprType_GT),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.NewIntDatum(1), tipb.ExprType_GT),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(100), types.Datum{}, tipb.ExprType_GT),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(1), types.Datum{}, tipb.ExprType_NullEQ),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.Datum{}, types.Datum{}, tipb.ExprType_NullEQ),
			types.NewIntDatum(1),
		},
		// Logic operation.
		{
			binaryExpr(types.NewIntDatum(0), types.NewIntDatum(1), tipb.ExprType_And),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(1), types.NewIntDatum(1), tipb.ExprType_And),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(0), types.Datum{}, tipb.ExprType_And),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(1), types.Datum{}, tipb.ExprType_And),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(0), types.NewIntDatum(0), tipb.ExprType_Or),
			types.NewIntDatum(0),
		},
		{
			binaryExpr(types.NewIntDatum(0), types.NewIntDatum(1), tipb.ExprType_Or),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(types.NewIntDatum(0), types.Datum{}, tipb.ExprType_Or),
			types.Datum{},
		},
		{
			binaryExpr(types.NewIntDatum(1), types.Datum{}, tipb.ExprType_Or),
			types.NewIntDatum(1),
		},
		{
			binaryExpr(
				binaryExpr(types.NewIntDatum(1), types.NewIntDatum(1), tipb.ExprType_EQ),
				binaryExpr(types.NewIntDatum(1), types.NewIntDatum(1), tipb.ExprType_EQ),
				tipb.ExprType_And),
			types.NewIntDatum(1),
		},
		{
			notExpr(datumExpr(types.NewIntDatum(1))),
			types.NewIntDatum(0),
		},
		{
			notExpr(datumExpr(types.NewIntDatum(0))),
			types.NewIntDatum(1),
		},
		{
			notExpr(datumExpr(types.Datum{})),
			types.Datum{},
		},
	}
	for _, ca := range cases {
		result, err := xevaluator.Eval(ca.expr)
		c.Assert(err, IsNil)
		c.Assert(result.Kind(), Equals, ca.result.Kind())
		cmp, err := result.CompareDatum(ca.result)
		c.Assert(err, IsNil)
		c.Assert(cmp, Equals, 0)
	}
}
Exemplo n.º 3
0
// TODO: add more tests.
func (s *testEvalSuite) TestEval(c *C) {
	colID := int64(1)
	row := make(map[int64]types.Datum)
	row[colID] = types.NewIntDatum(100)
	xevaluator := &Evaluator{Row: row}
	cases := []struct {
		expr   *tipb.Expr
		result types.Datum
	}{
		// Datums.
		{
			datumExpr(types.NewFloat32Datum(1.1)),
			types.NewFloat32Datum(1.1),
		},
		{
			datumExpr(types.NewFloat64Datum(1.1)),
			types.NewFloat64Datum(1.1),
		},
		{
			datumExpr(types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			datumExpr(types.NewUintDatum(1)),
			types.NewUintDatum(1),
		},
		{
			datumExpr(types.NewBytesDatum([]byte("abc"))),
			types.NewBytesDatum([]byte("abc")),
		},
		{
			datumExpr(types.NewStringDatum("abc")),
			types.NewStringDatum("abc"),
		},
		{
			datumExpr(types.Datum{}),
			types.Datum{},
		},
		{
			datumExpr(types.NewDurationDatum(mysql.Duration{Duration: time.Hour})),
			types.NewDurationDatum(mysql.Duration{Duration: time.Hour}),
		},
		{
			datumExpr(types.NewDecimalDatum(mysql.NewDecFromFloatForTest(1.1))),
			types.NewDecimalDatum(mysql.NewDecFromFloatForTest(1.1)),
		},
		{
			columnExpr(1),
			types.NewIntDatum(100),
		},
		// Comparison operations.
		{
			buildExpr(tipb.ExprType_LT, types.NewIntDatum(100), types.NewIntDatum(1)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_LT, types.NewIntDatum(1), types.NewIntDatum(100)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_LT, types.NewIntDatum(100), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_LE, types.NewIntDatum(100), types.NewIntDatum(1)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_LE, types.NewIntDatum(1), types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_LE, types.NewIntDatum(100), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_EQ, types.NewIntDatum(100), types.NewIntDatum(1)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_EQ, types.NewIntDatum(100), types.NewIntDatum(100)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_EQ, types.NewIntDatum(100), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_NE, types.NewIntDatum(100), types.NewIntDatum(100)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_NE, types.NewIntDatum(100), types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_NE, types.NewIntDatum(100), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_GE, types.NewIntDatum(1), types.NewIntDatum(100)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_GE, types.NewIntDatum(100), types.NewIntDatum(100)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_GE, types.NewIntDatum(100), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_GT, types.NewIntDatum(100), types.NewIntDatum(100)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_GT, types.NewIntDatum(100), types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_GT, types.NewIntDatum(100), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_NullEQ, types.NewIntDatum(1), types.Datum{}),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_NullEQ, types.Datum{}, types.Datum{}),
			types.NewIntDatum(1),
		},
		// Logic operation.
		{
			buildExpr(tipb.ExprType_And, types.NewIntDatum(0), types.NewIntDatum(1)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_And, types.NewIntDatum(1), types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_And, types.NewIntDatum(0), types.Datum{}),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_And, types.NewIntDatum(1), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_Or, types.NewIntDatum(0), types.NewIntDatum(0)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_Or, types.NewIntDatum(0), types.NewIntDatum(1)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_Or, types.NewIntDatum(0), types.Datum{}),
			types.Datum{},
		},
		{
			buildExpr(tipb.ExprType_Or, types.NewIntDatum(1), types.Datum{}),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_And,
				buildExpr(tipb.ExprType_EQ, types.NewIntDatum(1), types.NewIntDatum(1)),
				buildExpr(tipb.ExprType_EQ, types.NewIntDatum(1), types.NewIntDatum(1))),
			types.NewIntDatum(1),
		},
		{
			notExpr(datumExpr(types.NewIntDatum(1))),
			types.NewIntDatum(0),
		},
		{
			notExpr(datumExpr(types.NewIntDatum(0))),
			types.NewIntDatum(1),
		},
		{
			notExpr(datumExpr(types.Datum{})),
			types.Datum{},
		},
		// Arithmetic operation.
		{
			buildExpr(tipb.ExprType_Plus, types.NewIntDatum(-1), types.NewIntDatum(1)),
			types.NewIntDatum(0),
		},
		{
			buildExpr(tipb.ExprType_Plus, types.NewIntDatum(-1), types.NewFloat64Datum(1.5)),
			types.NewFloat64Datum(0.5),
		},
		{
			buildExpr(tipb.ExprType_Minus, types.NewIntDatum(-1), types.NewIntDatum(1)),
			types.NewIntDatum(-2),
		},
		{
			buildExpr(tipb.ExprType_Minus, types.NewIntDatum(-1), types.NewFloat64Datum(1.5)),
			types.NewFloat64Datum(-2.5),
		},
		{
			buildExpr(tipb.ExprType_Mul, types.NewFloat64Datum(-1), types.NewFloat64Datum(1)),
			types.NewFloat64Datum(-1),
		},
		{
			buildExpr(tipb.ExprType_Mul, types.NewFloat64Datum(-1.5), types.NewFloat64Datum(2)),
			types.NewFloat64Datum(-3),
		},
		{
			buildExpr(tipb.ExprType_Div, types.NewFloat64Datum(-3), types.NewFloat64Datum(2)),
			types.NewFloat64Datum(-1.5),
		},
		{
			buildExpr(tipb.ExprType_Div, types.NewFloat64Datum(-3), types.NewFloat64Datum(0)),
			types.NewDatum(nil),
		},
		{
			buildExpr(tipb.ExprType_IntDiv, types.NewIntDatum(3), types.NewIntDatum(2)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_IntDiv, types.NewFloat64Datum(3.0), types.NewFloat64Datum(1.9)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_Mod, types.NewIntDatum(3), types.NewIntDatum(2)),
			types.NewIntDatum(1),
		},
		{
			buildExpr(tipb.ExprType_Mod, types.NewFloat64Datum(3.0), types.NewFloat64Datum(1.9)),
			types.NewFloat64Datum(1.1),
		},
	}
	for _, ca := range cases {
		result, err := xevaluator.Eval(ca.expr)
		c.Assert(err, IsNil)
		c.Assert(result.Kind(), Equals, ca.result.Kind())
		cmp, err := result.CompareDatum(ca.result)
		c.Assert(err, IsNil)
		c.Assert(cmp, Equals, 0)
	}
}