package asv

import "io"
import "strings"
import "testing"
import "reflect"

func TestDecodeCollection (test *testing.T) {
	decoder := NewDecoder(strings.NewReader(
"record\x1fone\x1erecord\x1ftwo\x1drecord one in group two\x1crecord one in file two" +
"\x1flots of \x1b\x1b\x1b\x1f\x1b\x1d\x1b\x1e\x1b\x1cescape sequences"))
	got, err := decoder.ReadCollection()
	testErr(test, err)
	testEqual(test, "structures", got,
		Collection {
			File {
				Group {
					Record {
						"record",
						"one",
					},
					Record {
						"record",
						"two",
					},
				},
				Group {
					Record {
						"record one in group two",
					},
				},
			},
			File {
				Group {
					Record {
						"record one in file two",
						"lots of \x1b\x1f\x1d\x1e\x1cescape sequences",
					},
				},	
			},
		})
}

func TestDecodeRecord (test *testing.T) {
	decoder := NewDecoder(strings.NewReader(
"record\x1fone"))
	got, next, err := decoder.ReadRecord()
	testEqual(test, "errors", err,  io.EOF)
	testEqual(test, "next",   next, rune(0))
	testEqual(test, "structures", got,
		Record {
			"record",
			"one",
		})
}

func testErr (test *testing.T, err error) {
	if err != nil {
		test.Fatalf("unexpected error: %v", err)
	}
}

func testEqual (test *testing.T, desc string, got, correct any) {
	if !reflect.DeepEqual(got, correct) {
		test.Error(desc, "not equal")
		test.Errorf("GOT:\n%v",     got)
		test.Errorf("CORRECT:\n%v", correct)
		test.FailNow()
	}
}