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package gitdiff
import (
"testing"
)
func TestBase85Decode(t *testing.T) {
tests := map[string]struct {
Input string
Output []byte
Err bool
}{
"twoBytes": {
Input: "%KiWV",
Output: []byte{0xCA, 0xFE},
},
"fourBytes": {
Input: "007GV",
Output: []byte{0x0, 0x0, 0xCA, 0xFE},
},
"sixBytes": {
Input: "007GV%KiWV",
Output: []byte{0x0, 0x0, 0xCA, 0xFE, 0xCA, 0xFE},
},
"invalidCharacter": {
Input: "00'GV",
Err: true,
},
"underpaddedSequence": {
Input: "007G",
Err: true,
},
"dataUnderrun": {
Input: "007GV",
Output: make([]byte, 8),
Err: true,
},
}
for name, test := range tests {
t.Run(name, func(t *testing.T) {
dst := make([]byte, len(test.Output))
err := base85Decode(dst, []byte(test.Input))
if test.Err {
if err == nil {
t.Fatalf("expected error decoding base85 data, but got nil")
}
return
}
if err != nil {
t.Fatalf("unexpected error decoding base85 data: %v", err)
}
for i, b := range test.Output {
if dst[i] != b {
t.Errorf("incorrect byte at index %d: expected 0x%X, actual 0x%X", i, b, dst[i])
}
}
})
}
}
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