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package soap

import (
    "bytes"
    "math"
    "testing"
    "time"
)

type convTest interface {
    Marshal() (string, error)
    Unmarshal(string) (interface{}, error)
    Equal(result interface{}) bool
}

// duper is an interface that convTest values may optionally also implement to
// generate another convTest for a value in an otherwise identical testCase.
type duper interface {
    Dupe(tag string) []convTest
}

type testCase struct {
    value            convTest
    str              string
    wantMarshalErr   bool
    wantUnmarshalErr bool
    noMarshal        bool
    noUnMarshal      bool
    tag              string
}

type Ui1Test uint8

func (v Ui1Test) Marshal() (string, error) {
    return MarshalUi1(uint8(v))
}
func (v Ui1Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalUi1(s)
}
func (v Ui1Test) Equal(result interface{}) bool {
    return uint8(v) == result.(uint8)
}
func (v Ui1Test) Dupe(tag string) []convTest {
    if tag == "dupe" {
        return []convTest{
            Ui2Test(v),
            Ui4Test(v),
        }
    }
    return nil
}

type Ui2Test uint16

func (v Ui2Test) Marshal() (string, error) {
    return MarshalUi2(uint16(v))
}
func (v Ui2Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalUi2(s)
}
func (v Ui2Test) Equal(result interface{}) bool {
    return uint16(v) == result.(uint16)
}

type Ui4Test uint32

func (v Ui4Test) Marshal() (string, error) {
    return MarshalUi4(uint32(v))
}
func (v Ui4Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalUi4(s)
}
func (v Ui4Test) Equal(result interface{}) bool {
    return uint32(v) == result.(uint32)
}

type I1Test int8

func (v I1Test) Marshal() (string, error) {
    return MarshalI1(int8(v))
}
func (v I1Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalI1(s)
}
func (v I1Test) Equal(result interface{}) bool {
    return int8(v) == result.(int8)
}
func (v I1Test) Dupe(tag string) []convTest {
    if tag == "dupe" {
        return []convTest{
            I2Test(v),
            I4Test(v),
        }
    }
    return nil
}

type I2Test int16

func (v I2Test) Marshal() (string, error) {
    return MarshalI2(int16(v))
}
func (v I2Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalI2(s)
}
func (v I2Test) Equal(result interface{}) bool {
    return int16(v) == result.(int16)
}

type I4Test int32

func (v I4Test) Marshal() (string, error) {
    return MarshalI4(int32(v))
}
func (v I4Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalI4(s)
}
func (v I4Test) Equal(result interface{}) bool {
    return int32(v) == result.(int32)
}

type IntTest int64

func (v IntTest) Marshal() (string, error) {
    return MarshalInt(int64(v))
}
func (v IntTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalInt(s)
}
func (v IntTest) Equal(result interface{}) bool {
    return int64(v) == result.(int64)
}

type Fixed14_4Test float64

func (v Fixed14_4Test) Marshal() (string, error) {
    return MarshalFixed14_4(float64(v))
}
func (v Fixed14_4Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalFixed14_4(s)
}
func (v Fixed14_4Test) Equal(result interface{}) bool {
    return math.Abs(float64(v)-result.(float64)) < 0.001
}

type CharTest rune

func (v CharTest) Marshal() (string, error) {
    return MarshalChar(rune(v))
}
func (v CharTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalChar(s)
}
func (v CharTest) Equal(result interface{}) bool {
    return rune(v) == result.(rune)
}

type DateTest struct{ time.Time }

func (v DateTest) Marshal() (string, error) {
    return MarshalDate(time.Time(v.Time))
}
func (v DateTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalDate(s)
}
func (v DateTest) Equal(result interface{}) bool {
    return v.Time.Equal(result.(time.Time))
}
func (v DateTest) Dupe(tag string) []convTest {
    if tag != "no:dateTime" {
        return []convTest{DateTimeTest{v.Time}}
    }
    return nil
}

type TimeOfDayTest struct {
    TimeOfDay
}

func (v TimeOfDayTest) Marshal() (string, error) {
    return MarshalTimeOfDay(v.TimeOfDay)
}
func (v TimeOfDayTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalTimeOfDay(s)
}
func (v TimeOfDayTest) Equal(result interface{}) bool {
    return v.TimeOfDay == result.(TimeOfDay)
}
func (v TimeOfDayTest) Dupe(tag string) []convTest {
    if tag != "no:time.tz" {
        return []convTest{TimeOfDayTzTest{v.TimeOfDay}}
    }
    return nil
}

type TimeOfDayTzTest struct {
    TimeOfDay
}

func (v TimeOfDayTzTest) Marshal() (string, error) {
    return MarshalTimeOfDayTz(v.TimeOfDay)
}
func (v TimeOfDayTzTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalTimeOfDayTz(s)
}
func (v TimeOfDayTzTest) Equal(result interface{}) bool {
    return v.TimeOfDay == result.(TimeOfDay)
}

type DateTimeTest struct{ time.Time }

func (v DateTimeTest) Marshal() (string, error) {
    return MarshalDateTime(time.Time(v.Time))
}
func (v DateTimeTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalDateTime(s)
}
func (v DateTimeTest) Equal(result interface{}) bool {
    return v.Time.Equal(result.(time.Time))
}
func (v DateTimeTest) Dupe(tag string) []convTest {
    if tag != "no:dateTime.tz" {
        return []convTest{DateTimeTzTest{v.Time}}
    }
    return nil
}

type DateTimeTzTest struct{ time.Time }

func (v DateTimeTzTest) Marshal() (string, error) {
    return MarshalDateTimeTz(time.Time(v.Time))
}
func (v DateTimeTzTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalDateTimeTz(s)
}
func (v DateTimeTzTest) Equal(result interface{}) bool {
    return v.Time.Equal(result.(time.Time))
}

type BooleanTest bool

func (v BooleanTest) Marshal() (string, error) {
    return MarshalBoolean(bool(v))
}
func (v BooleanTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalBoolean(s)
}
func (v BooleanTest) Equal(result interface{}) bool {
    return bool(v) == result.(bool)
}

type BinBase64Test []byte

func (v BinBase64Test) Marshal() (string, error) {
    return MarshalBinBase64([]byte(v))
}
func (v BinBase64Test) Unmarshal(s string) (interface{}, error) {
    return UnmarshalBinBase64(s)
}
func (v BinBase64Test) Equal(result interface{}) bool {
    return bytes.Equal([]byte(v), result.([]byte))
}

type BinHexTest []byte

func (v BinHexTest) Marshal() (string, error) {
    return MarshalBinHex([]byte(v))
}
func (v BinHexTest) Unmarshal(s string) (interface{}, error) {
    return UnmarshalBinHex(s)
}
func (v BinHexTest) Equal(result interface{}) bool {
    return bytes.Equal([]byte(v), result.([]byte))
}

func Test(t *testing.T) {
    const time010203 time.Duration = (1*3600 + 2*60 + 3) * time.Second
    const time0102 time.Duration = (1*3600 + 2*60) * time.Second
    const time01 time.Duration = (1 * 3600) * time.Second
    const time235959 time.Duration = (23*3600 + 59*60 + 59) * time.Second

    // Fake out the local time for the implementation.
    localLoc = time.FixedZone("Fake/Local", 6*3600)
    defer func() {
        localLoc = time.Local
    }()

    tests := []testCase{
        // ui1
        {str: "", value: Ui1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: " ", value: Ui1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: "abc", value: Ui1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: "-1", value: Ui1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: "0", value: Ui1Test(0), tag: "dupe"},
        {str: "1", value: Ui1Test(1), tag: "dupe"},
        {str: "255", value: Ui1Test(255), tag: "dupe"},
        {str: "256", value: Ui1Test(0), wantUnmarshalErr: true, noMarshal: true},

        // ui2
        {str: "65535", value: Ui2Test(65535)},
        {str: "65536", value: Ui2Test(0), wantUnmarshalErr: true, noMarshal: true},

        // ui4
        {str: "4294967295", value: Ui4Test(4294967295)},
        {str: "4294967296", value: Ui4Test(0), wantUnmarshalErr: true, noMarshal: true},

        // i1
        {str: "", value: I1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: " ", value: I1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: "abc", value: I1Test(0), wantUnmarshalErr: true, noMarshal: true, tag: "dupe"},
        {str: "0", value: I1Test(0), tag: "dupe"},
        {str: "-1", value: I1Test(-1), tag: "dupe"},
        {str: "127", value: I1Test(127), tag: "dupe"},
        {str: "-128", value: I1Test(-128), tag: "dupe"},
        {str: "128", value: I1Test(0), wantUnmarshalErr: true, noMarshal: true},
        {str: "-129", value: I1Test(0), wantUnmarshalErr: true, noMarshal: true},

        // i2
        {str: "32767", value: I2Test(32767)},
        {str: "-32768", value: I2Test(-32768)},
        {str: "32768", value: I2Test(0), wantUnmarshalErr: true, noMarshal: true},
        {str: "-32769", value: I2Test(0), wantUnmarshalErr: true, noMarshal: true},

        // i4
        {str: "2147483647", value: I4Test(2147483647)},
        {str: "-2147483648", value: I4Test(-2147483648)},
        {str: "2147483648", value: I4Test(0), wantUnmarshalErr: true, noMarshal: true},
        {str: "-2147483649", value: I4Test(0), wantUnmarshalErr: true, noMarshal: true},

        // int
        {str: "9223372036854775807", value: IntTest(9223372036854775807)},
        {str: "-9223372036854775808", value: IntTest(-9223372036854775808)},
        {str: "9223372036854775808", value: IntTest(0), wantUnmarshalErr: true, noMarshal: true},
        {str: "-9223372036854775809", value: IntTest(0), wantUnmarshalErr: true, noMarshal: true},

        // fixed.14.4
        {str: "0.0000", value: Fixed14_4Test(0)},
        {str: "1.0000", value: Fixed14_4Test(1)},
        {str: "1.2346", value: Fixed14_4Test(1.23456)},
        {str: "-1.0000", value: Fixed14_4Test(-1)},
        {str: "-1.2346", value: Fixed14_4Test(-1.23456)},
        {str: "10000000000000.0000", value: Fixed14_4Test(1e13)},
        {str: "100000000000000.0000", value: Fixed14_4Test(1e14), wantMarshalErr: true, wantUnmarshalErr: true},
        {str: "-10000000000000.0000", value: Fixed14_4Test(-1e13)},
        {str: "-100000000000000.0000", value: Fixed14_4Test(-1e14), wantMarshalErr: true, wantUnmarshalErr: true},

        // char
        {str: "a", value: CharTest('a')},
        {str: "z", value: CharTest('z')},
        {str: "\u1234", value: CharTest(0x1234)},
        {str: "aa", value: CharTest(0), wantMarshalErr: true, wantUnmarshalErr: true},
        {str: "", value: CharTest(0), wantMarshalErr: true, wantUnmarshalErr: true},

        // date
        {str: "2013-10-08", value: DateTest{time.Date(2013, 10, 8, 0, 0, 0, 0, localLoc)}, tag: "no:dateTime"},
        {str: "20131008", value: DateTest{time.Date(2013, 10, 8, 0, 0, 0, 0, localLoc)}, noMarshal: true, tag: "no:dateTime"},
        {str: "2013-10-08T10:30:50", value: DateTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime"},
        {str: "2013-10-08T10:30:50Z", value: DateTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime"},
        {str: "", value: DateTest{}, wantMarshalErr: true, wantUnmarshalErr: true, noMarshal: true},
        {str: "-1", value: DateTest{}, wantUnmarshalErr: true, noMarshal: true},

        // time
        {str: "00:00:00", value: TimeOfDayTest{TimeOfDay{FromMidnight: 0}}},
        {str: "000000", value: TimeOfDayTest{TimeOfDay{FromMidnight: 0}}, noMarshal: true},
        {str: "24:00:00", value: TimeOfDayTest{TimeOfDay{FromMidnight: 24 * time.Hour}}, noMarshal: true}, // ISO8601 special case
        {str: "24:01:00", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "24:00:01", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "25:00:00", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "00:60:00", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "00:00:60", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "01:02:03", value: TimeOfDayTest{TimeOfDay{FromMidnight: time010203}}},
        {str: "010203", value: TimeOfDayTest{TimeOfDay{FromMidnight: time010203}}, noMarshal: true},
        {str: "23:59:59", value: TimeOfDayTest{TimeOfDay{FromMidnight: time235959}}},
        {str: "235959", value: TimeOfDayTest{TimeOfDay{FromMidnight: time235959}}, noMarshal: true},
        {str: "01:02", value: TimeOfDayTest{TimeOfDay{FromMidnight: time0102}}, noMarshal: true},
        {str: "0102", value: TimeOfDayTest{TimeOfDay{FromMidnight: time0102}}, noMarshal: true},
        {str: "01", value: TimeOfDayTest{TimeOfDay{FromMidnight: time01}}, noMarshal: true},
        {str: "foo 01:02:03", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "foo\n01:02:03", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03 foo", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03\nfoo", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03Z", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03+01", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03+01:23", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03+0123", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03-01", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03-01:23", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},
        {str: "01:02:03-0123", value: TimeOfDayTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:time.tz"},

        // time.tz
        {str: "24:00:01", value: TimeOfDayTzTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "01Z", value: TimeOfDayTzTest{TimeOfDay{time01, true, 0}}, noMarshal: true},
        {str: "01:02:03Z", value: TimeOfDayTzTest{TimeOfDay{time010203, true, 0}}},
        {str: "01+01", value: TimeOfDayTzTest{TimeOfDay{time01, true, 3600}}, noMarshal: true},
        {str: "01:02:03+01", value: TimeOfDayTzTest{TimeOfDay{time010203, true, 3600}}, noMarshal: true},
        {str: "01:02:03+01:23", value: TimeOfDayTzTest{TimeOfDay{time010203, true, 3600 + 23*60}}},
        {str: "01:02:03+0123", value: TimeOfDayTzTest{TimeOfDay{time010203, true, 3600 + 23*60}}, noMarshal: true},
        {str: "01:02:03-01", value: TimeOfDayTzTest{TimeOfDay{time010203, true, -3600}}, noMarshal: true},
        {str: "01:02:03-01:23", value: TimeOfDayTzTest{TimeOfDay{time010203, true, -(3600 + 23*60)}}},
        {str: "01:02:03-0123", value: TimeOfDayTzTest{TimeOfDay{time010203, true, -(3600 + 23*60)}}, noMarshal: true},

        // dateTime
        {str: "2013-10-08T00:00:00", value: DateTimeTest{time.Date(2013, 10, 8, 0, 0, 0, 0, localLoc)}, tag: "no:dateTime.tz"},
        {str: "20131008", value: DateTimeTest{time.Date(2013, 10, 8, 0, 0, 0, 0, localLoc)}, noMarshal: true},
        {str: "2013-10-08T10:30:50", value: DateTimeTest{time.Date(2013, 10, 8, 10, 30, 50, 0, localLoc)}, tag: "no:dateTime.tz"},
        {str: "2013-10-08T10:30:50T", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true},
        {str: "2013-10-08T10:30:50+01", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime.tz"},
        {str: "2013-10-08T10:30:50+01:23", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime.tz"},
        {str: "2013-10-08T10:30:50+0123", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime.tz"},
        {str: "2013-10-08T10:30:50-01", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime.tz"},
        {str: "2013-10-08T10:30:50-01:23", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime.tz"},
        {str: "2013-10-08T10:30:50-0123", value: DateTimeTest{}, wantUnmarshalErr: true, noMarshal: true, tag: "no:dateTime.tz"},

        // dateTime.tz
        {str: "2013-10-08T10:30:50", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, localLoc)}, noMarshal: true},
        {str: "2013-10-08T10:30:50+01", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, time.FixedZone("+01:00", 3600))}, noMarshal: true},
        {str: "2013-10-08T10:30:50+01:23", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, time.FixedZone("+01:23", 3600+23*60))}},
        {str: "2013-10-08T10:30:50+0123", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, time.FixedZone("+01:23", 3600+23*60))}, noMarshal: true},
        {str: "2013-10-08T10:30:50-01", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, time.FixedZone("-01:00", -3600))}, noMarshal: true},
        {str: "2013-10-08T10:30:50-01:23", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, time.FixedZone("-01:23", -(3600+23*60)))}},
        {str: "2013-10-08T10:30:50-0123", value: DateTimeTzTest{time.Date(2013, 10, 8, 10, 30, 50, 0, time.FixedZone("-01:23", -(3600+23*60)))}, noMarshal: true},

        // boolean
        {str: "0", value: BooleanTest(false)},
        {str: "1", value: BooleanTest(true)},
        {str: "false", value: BooleanTest(false), noMarshal: true},
        {str: "true", value: BooleanTest(true), noMarshal: true},
        {str: "no", value: BooleanTest(false), noMarshal: true},
        {str: "yes", value: BooleanTest(true), noMarshal: true},
        {str: "", value: BooleanTest(false), noMarshal: true, wantUnmarshalErr: true},
        {str: "other", value: BooleanTest(false), noMarshal: true, wantUnmarshalErr: true},
        {str: "2", value: BooleanTest(false), noMarshal: true, wantUnmarshalErr: true},
        {str: "-1", value: BooleanTest(false), noMarshal: true, wantUnmarshalErr: true},

        // bin.base64
        {str: "", value: BinBase64Test{}},
        {str: "YQ==", value: BinBase64Test("a")},
        {str: "TG9uZ2VyIFN0cmluZy4=", value: BinBase64Test("Longer String.")},
        {str: "TG9uZ2VyIEFsaWduZWQu", value: BinBase64Test("Longer Aligned.")},

        // bin.hex
        {str: "", value: BinHexTest{}},
        {str: "61", value: BinHexTest("a")},
        {str: "4c6f6e67657220537472696e672e", value: BinHexTest("Longer String.")},
        {str: "4C6F6E67657220537472696E672E", value: BinHexTest("Longer String."), noMarshal: true},
    }

    // Generate extra test cases from convTests that implement duper.
    var extras []testCase
    for i := range tests {
        if duper, ok := tests[i].value.(duper); ok {
            dupes := duper.Dupe(tests[i].tag)
            for _, duped := range dupes {
                dupedCase := testCase(tests[i])
                dupedCase.value = duped
                extras = append(extras, dupedCase)
            }
        }
    }
    tests = append(tests, extras...)

    for _, test := range tests {
        if test.noMarshal {
        } else if resultStr, err := test.value.Marshal(); err != nil && !test.wantMarshalErr {
            t.Errorf("For %T marshal %v, want %q, got error: %v", test.value, test.value, test.str, err)
        } else if err == nil && test.wantMarshalErr {
            t.Errorf("For %T marshal %v, want error, got %q", test.value, test.value, resultStr)
        } else if err == nil && resultStr != test.str {
            t.Errorf("For %T marshal %v, want %q, got %q", test.value, test.value, test.str, resultStr)
        }

        if test.noUnMarshal {
        } else if resultValue, err := test.value.Unmarshal(test.str); err != nil && !test.wantUnmarshalErr {
            t.Errorf("For %T unmarshal %q, want %v, got error: %v", test.value, test.str, test.value, err)
        } else if err == nil && test.wantUnmarshalErr {
            t.Errorf("For %T unmarshal %q, want error, got %v", test.value, test.str, resultValue)
        } else if err == nil && !test.value.Equal(resultValue) {
            t.Errorf("For %T unmarshal %q, want %v, got %v", test.value, test.str, test.value, resultValue)
        }
    }
}