Function TestConvertToString

pkg/types/convert_test.go:331–392

(t *testing.T)

}

func TestConvertToString(t *testing.T) {
	testToString(t, "0", "0")
	testToString(t, true, "1")
	testToString(t, "false", "false")
	testToString(t, 0, "0")
	testToString(t, int64(0), "0")
	testToString(t, uint64(0), "0")
	testToString(t, float32(1.6), "1.6")
	testToString(t, float64(-0.6), "-0.6")
	testToString(t, []byte{1}, "\x01")
	testToString(t, NewBinaryLiteralFromUint(0x4D7953514C, -1), "MySQL")
	testToString(t, NewBinaryLiteralFromUint(0x41, -1), "A")
	testToString(t, Enum{Name: "a", Value: 1}, "a")
	testToString(t, Set{Name: "a", Value: 1}, "a")

	t1, err := ParseTime(DefaultStmtNoWarningContext, "2011-11-10 11:11:11.999999", mysql.TypeTimestamp, 6)
	require.NoError(t, err)
	testToString(t, t1, "2011-11-10 11:11:11.999999")

	td, _, err := ParseDuration(DefaultStmtNoWarningContext, "11:11:11.999999", 6)
	require.NoError(t, err)
	testToString(t, td, "11:11:11.999999")

	ft := NewFieldType(mysql.TypeNewDecimal)
	ft.SetFlen(10)
	ft.SetDecimal(5)
	v, err := Convert(3.1415926, ft)
	require.NoError(t, err)
	testToString(t, v, "3.14159")

	_, err = ToString(&invalidMockType{})
	require.Error(t, err)

	// test truncate
	tests := []struct {
		flen    int
		charset string
		input   string
		output  string
	}{
		{5, "utf8", "你好，世界", "你好，世界"},
		{5, "utf8mb4", "你好，世界", "你好，世界"},
		{4, "utf8", "你好，世界", "你好，世"},
		{4, "utf8mb4", "你好，世界", "你好，世"},
		{15, "binary", "你好，世界", "你好，世界"},
		{12, "binary", "你好，世界", "你好，世"},
		{0, "binary", "你好，世界", ""},
	}
	for _, tt := range tests {
		ft = NewFieldType(mysql.TypeVarchar)
		ft.SetFlen(tt.flen)
		ft.SetCharset(tt.charset)
		inputDatum := NewStringDatum(tt.input)
		outputDatum, err := inputDatum.ConvertTo(DefaultStmtNoWarningContext, ft)
		if tt.input != tt.output {
			require.True(t, ErrDataTooLong.Equal(err), "flen: %d, charset: %s, input: %s, output: %s", tt.flen, tt.charset, tt.input, tt.output)
		} else {
			require.NoError(t, err)