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reader_test.go
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180 lines (177 loc) · 5.71 KB
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package digest
import (
"bytes"
"errors"
"io"
"testing"
)
func TestReader(t *testing.T) {
tt := []struct {
name string
r Reader
bytes []byte
expect Digest
mismatch Digest
errRead error
errDigest error
}{
{
name: "nil",
errRead: ErrReaderInvalid,
errDigest: ErrReaderInvalid,
},
{
name: "nil-reader",
r: NewReader(nil, SHA256),
errRead: ErrReaderInvalid,
expect: Digest{alg: "sha256", enc: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
mismatch: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
},
{
name: "canonical-empty-json",
r: NewReader(bytes.NewReader([]byte("{}")), Algorithm{}),
bytes: []byte("{}"),
expect: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
mismatch: Digest{alg: "sha256", enc: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
},
{
name: "sha256-empty-json",
r: NewReader(bytes.NewReader([]byte("{}")), SHA256),
bytes: []byte("{}"),
expect: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
mismatch: Digest{alg: "sha256", enc: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
},
{
name: "sha512-empty-json",
r: NewReader(bytes.NewReader([]byte("{}")), SHA512),
bytes: []byte("{}"),
expect: Digest{alg: "sha512", enc: "27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd"},
mismatch: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
},
}
for _, tc := range tt {
t.Run(tc.name, func(t *testing.T) {
// read all bytes
out, err := io.ReadAll(tc.r)
if tc.errRead != nil {
if !errors.Is(err, tc.errRead) {
t.Errorf("expected read err %v, received %v", tc.errRead, err)
}
} else if err != nil {
t.Fatalf("unexpected read err: %v", err)
}
if !bytes.Equal(out, tc.bytes) {
t.Errorf("expected bytes %s, received %s", tc.bytes, out)
}
// compare digest
dig, err := tc.r.Digest()
if tc.errDigest != nil {
if !errors.Is(err, tc.errDigest) {
t.Errorf("expected digest err %v, received %v", tc.errDigest, err)
}
} else if err != nil {
t.Errorf("unexpected digest err: %v", err)
}
if !dig.Equal(tc.expect) {
t.Errorf("expected digest %s, received %s", tc.expect.String(), dig.String())
}
// verify mismatch
if tc.r.Verify(tc.mismatch) {
t.Errorf("unexpected verify of mismatch")
}
// verify expected value
if tc.errDigest == nil && !tc.r.Verify(tc.expect) {
t.Errorf("verify failed")
}
// access hash directly
if tc.errDigest == nil {
h := tc.r.Hash()
dig, err = NewDigest(tc.r.alg, h)
if err != nil {
t.Errorf("failed to create digest from hash: %v", err)
}
if !dig.Equal(tc.expect) {
t.Errorf("expected digest %s, received %s", tc.expect.String(), dig.String())
}
}
})
}
}
func TestReadAll(t *testing.T) {
tt := []struct {
name string
r Reader
bytes []byte
expect Digest
mismatch Digest
errRead error
errDigest error
}{
{
name: "nil",
errRead: ErrReaderInvalid,
errDigest: ErrReaderInvalid,
},
{
name: "nil-reader",
r: NewReader(nil, SHA256),
errRead: ErrReaderInvalid,
expect: Digest{alg: "sha256", enc: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
mismatch: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
},
{
name: "canonical-empty-json",
r: NewReader(bytes.NewReader([]byte("{}")), Algorithm{}),
bytes: []byte("{}"),
expect: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
mismatch: Digest{alg: "sha256", enc: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
},
{
name: "sha256-empty-json",
r: NewReader(bytes.NewReader([]byte("{}")), SHA256),
bytes: []byte("{}"),
expect: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
mismatch: Digest{alg: "sha256", enc: "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
},
{
name: "sha512-empty-json",
r: NewReader(bytes.NewReader([]byte("{}")), SHA512),
bytes: []byte("{}"),
expect: Digest{alg: "sha512", enc: "27c74670adb75075fad058d5ceaf7b20c4e7786c83bae8a32f626f9782af34c9a33c2046ef60fd2a7878d378e29fec851806bbd9a67878f3a9f1cda4830763fd"},
mismatch: Digest{alg: "sha256", enc: "44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a"},
},
}
for _, tc := range tt {
t.Run(tc.name, func(t *testing.T) {
// read all bytes
err := tc.r.ReadAll()
if tc.errRead != nil {
if !errors.Is(err, tc.errRead) {
t.Errorf("expected read err %v, received %v", tc.errRead, err)
}
} else if err != nil {
t.Fatalf("unexpected read err: %v", err)
}
// compare digest
dig, err := tc.r.Digest()
if tc.errDigest != nil {
if !errors.Is(err, tc.errDigest) {
t.Errorf("expected digest err %v, received %v", tc.errDigest, err)
}
} else if err != nil {
t.Errorf("unexpected digest err: %v", err)
}
if !dig.Equal(tc.expect) {
t.Errorf("expected digest %s, received %s", tc.expect.String(), dig.String())
}
// verify mismatch
if tc.r.Verify(tc.mismatch) {
t.Errorf("unexpected verify of mismatch")
}
// verify expected value
if tc.errDigest == nil && !tc.r.Verify(tc.expect) {
t.Errorf("verify failed")
}
})
}
}