package exif

import (
    "io/ioutil"

    "testing"
    "os"
    "time"

    "github.com/dsoprea/go-logging"
)

func TestDumpBytes(t *testing.T) {
    f, err := ioutil.TempFile(os.TempDir(), "utilitytest")
    log.PanicIf(err)

    defer os.Remove(f.Name())

    originalStdout := os.Stdout
    os.Stdout = f

    DumpBytes([]byte { 0x11, 0x22 })

    os.Stdout = originalStdout

    _, err = f.Seek(0, 0)
    log.PanicIf(err)

    content, err := ioutil.ReadAll(f)
    log.PanicIf(err)

    if string(content) != "DUMP: 11 22 \n" {
        t.Fatalf("content not correct: [%s]", string(content))
    }
}

func TestDumpBytesClause(t *testing.T) {
    f, err := ioutil.TempFile(os.TempDir(), "utilitytest")
    log.PanicIf(err)

    defer os.Remove(f.Name())

    originalStdout := os.Stdout
    os.Stdout = f

    DumpBytesClause([]byte { 0x11, 0x22 })

    os.Stdout = originalStdout

    _, err = f.Seek(0, 0)
    log.PanicIf(err)

    content, err := ioutil.ReadAll(f)
    log.PanicIf(err)

    if string(content) != "DUMP: []byte { 0x11, 0x22 }\n" {
        t.Fatalf("content not correct: [%s]", string(content))
    }
}

func TestDumpBytesToString(t *testing.T) {
    s := DumpBytesToString([]byte { 0x12, 0x34, 0x56 })

    if s != "12 34 56" {
        t.Fatalf("result not expected")
    }
}

func TestDumpBytesClauseToString(t *testing.T) {
    s := DumpBytesClauseToString([]byte { 0x12, 0x34, 0x56 })

    if s != "0x12, 0x34, 0x56" {
        t.Fatalf("result not expected")
    }
}

func TestParseExifFullTimestamp(t *testing.T) {
    timestamp, err := ParseExifFullTimestamp("2018:11:30 13:01:49")
    log.PanicIf(err)

    actual := timestamp.Format(time.RFC3339)
    expected := "2018-11-30T13:01:49Z"

    if actual != expected {
        t.Fatalf("time not formatted correctly: [%s] != [%s]", actual, expected)
    }
}