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package hotline
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestClientIDFromBytes(t *testing.T) {
tests := []struct {
name string
b []byte
want ClientID
wantOk bool
}{
{name: "valid 2 bytes", b: []byte{0x00, 0x05}, want: ClientID{0x00, 0x05}, wantOk: true},
{name: "nil", b: nil, wantOk: false},
{name: "too short", b: []byte{0x01}, wantOk: false},
{name: "too long", b: []byte{0x01, 0x02, 0x03}, wantOk: false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, ok := ClientIDFromBytes(tt.b)
assert.Equal(t, tt.wantOk, ok)
if tt.wantOk {
assert.Equal(t, tt.want, got)
}
})
}
}
func TestChatIDFromBytes(t *testing.T) {
tests := []struct {
name string
b []byte
want ChatID
wantOk bool
}{
{name: "valid 4 bytes", b: []byte{0x00, 0x00, 0x00, 0x09}, want: ChatID{0x00, 0x00, 0x00, 0x09}, wantOk: true},
{name: "nil", b: nil, wantOk: false},
{name: "too short", b: []byte{0x01, 0x02, 0x03}, wantOk: false},
{name: "too long", b: []byte{0x01, 0x02, 0x03, 0x04, 0x05}, wantOk: false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, ok := ChatIDFromBytes(tt.b)
assert.Equal(t, tt.wantOk, ok)
if tt.wantOk {
assert.Equal(t, tt.want, got)
}
})
}
}
func TestFileResumeData_UnmarshalBinary(t *testing.T) {
// A well-formed buffer: 42-byte header with ForkCount=1, plus one 16-byte fork.
valid := make([]byte, resumeDataHeaderLen+forkInfoLen)
valid[41] = 1 // ForkCount low byte
t.Run("valid single-fork buffer parses", func(t *testing.T) {
var frd FileResumeData
require.NoError(t, frd.UnmarshalBinary(valid))
assert.Len(t, frd.ForkInfoList, 1)
})
t.Run("buffer shorter than header returns error, no panic", func(t *testing.T) {
var frd FileResumeData
assert.Error(t, frd.UnmarshalBinary(make([]byte, 10)))
})
t.Run("fork count overrunning the buffer returns error, no panic", func(t *testing.T) {
b := make([]byte, resumeDataHeaderLen) // header only, no fork bytes
b[41] = 3 // claims 3 forks that aren't present
var frd FileResumeData
assert.Error(t, frd.UnmarshalBinary(b))
})
t.Run("zero fork count yields an empty list", func(t *testing.T) {
b := make([]byte, resumeDataHeaderLen)
var frd FileResumeData
require.NoError(t, frd.UnmarshalBinary(b))
assert.Empty(t, frd.ForkInfoList)
})
}
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