netshovel

gapstring_test.go

 1package gapstring
 2
 3import (
 4	"bytes"
 5	"testing"
 6)
 7
 8func assertEqual(t *testing.T, name string, a, b interface{}) {
 9	if a != b {
10		t.Errorf("%s: %#v != %#v", name, a, b)
11	}
12}
13
14func TestChunk(t *testing.T) {
15	var c chunk
16
17	c = chunk{gap: 2}
18	assertEqual(t, "gap chunk", c.length(), 2)
19
20	c = chunk{data: []byte("moo")}
21	assertEqual(t, "byte chunk", c.length(), 3)
22	assertEqual(t, "byte slice", string(c.slice(1, 3).data), "oo")
23}
24
25func TestGapString(t *testing.T) {
26	g := GapString{}
27
28	if 0 != bytes.Compare(g.Bytes(), []byte{}) {
29		t.Errorf("%#v.Bytes() != []byte{}", g)
30	}
31	if g.Length() != 0 {
32		t.Errorf("len(%#v) != 0", g)
33	}
34
35	g = g.Append(g)
36	if g.Length() != 0 {
37		t.Errorf("Appending two emtpy gapstrings")
38	}
39
40	g = g.AppendString("moo")
41	if 0 != bytes.Compare(g.Bytes(), []byte("moo")) {
42		t.Errorf("Simple string")
43	}
44
45	g = g.AppendString("bar")
46	if g.String("") != "moobar" {
47		t.Errorf("Append")
48	}
49	if g.Missing() != 0 {
50		t.Errorf("Missing when there shouldn't be any missing")
51	}
52
53	g = g.AppendGap(8)
54	if g.Length() != 3+3+8 {
55		t.Errorf("Length after gap append")
56	}
57	if g.Missing() != 8 {
58		t.Errorf("Gap miscounted")
59	}
60
61	g = g.AppendString("baz")
62	assertEqual(t, "string", g.String(""), "moobarbaz")
63	assertEqual(t, "string drop", g.String("DROP"), "moobarOPDROPDRbaz")
64
65	assertEqual(t, "xor", g.Xor(1).String(""), "lnnc`sc`{")
66	assertEqual(t, "xor drop", g.Xor(1).String("DROP"), "lnnc`sOPDROPDRc`{")
67
68	assertEqual(t, "slice", g.Slice(2, 5).String(""), "oba")
69	assertEqual(t, "slice+xor", g.Slice(2, 5).Xor(1).String(""), "nc`")
70
71	hexdump :=
72		"00000000  6d 6f 6f 62 61 72 -- --  -- -- -- -- -- -- 62 61  moobar��������ba\n" +
73			"00000010  7a                                                z\n" +
74			"00000011\n"
75	assertEqual(t, "hexdump", g.Hexdump(), hexdump)
76}