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Implement kaitai.Struct: common interface mandating Kaitai_IO() metho…
…d on all ksc-generated types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| package kaitai | ||
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| // Struct is the common interface guaranteed to be implemented by all types generated | ||
| // by Kaitai Struct compiler. | ||
| type Struct interface { | ||
| Kaitai_IO() *Stream | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package kaitai | ||
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| import ( | ||
| "bytes" | ||
| "testing" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
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| // Declare two struct simulating types generated by Kaitai Struct compiler | ||
| type oneStruct struct { | ||
| one int | ||
| _io *Stream | ||
| } | ||
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| func (s *oneStruct) Kaitai_IO() *Stream { | ||
| return s._io | ||
| } | ||
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| type twoStruct struct { | ||
| two int | ||
| _io *Stream | ||
| } | ||
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| func (s *twoStruct) Kaitai_IO() *Stream { | ||
| return s._io | ||
| } | ||
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| func WorkWithStruct(s Struct, t *testing.T, expectedSize int) { | ||
| actualSize, err := s.Kaitai_IO().Size() | ||
| assert.Equal(t, actualSize, int64(expectedSize)) | ||
| assert.Nil(t, err) | ||
| } | ||
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| func TestKaitaiStruct(t *testing.T) { | ||
| // Instantiate streams for the structs | ||
| oneStream := NewStream(bytes.NewReader([]byte("a"))) | ||
| twoStream := NewStream(bytes.NewReader([]byte("ab"))) | ||
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| // Instantiate the structs | ||
| one := oneStruct{1, oneStream} | ||
| two := twoStruct{2, twoStream} | ||
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| // Check if the structs implement the Struct interface | ||
| WorkWithStruct(&one, t, 1) | ||
| WorkWithStruct(&two, t, 2) | ||
| } |