One more test case for a draft issue

Author: yaronf

digest_test.go

@@ -95,4 +95,10 @@ func TestValidateContentDigestHeader(t *testing.T) {
 	hdr = res6.Header.Values("Content-Digest")
 	err = ValidateContentDigestHeader(hdr, &res6.Body, []string{DigestSha256})
 	assert.Error(t, err, "digest mismatch")
+
+	// TODO fix when the draft is modified,https://github.com/httpwg/http-extensions/pull/2049
+	res7 := readResponse(httpres4)
+	hdr = res7.Header.Values("Content-Digest")
+	err = ValidateContentDigestHeader(hdr, &res7.Body, []string{DigestSha512})
+	assert.Error(t, err, "digest mismatch?")
 }

doc.go

@@ -5,4 +5,6 @@
 // Alternatively you can use SignRequest, VerifyResponse etc. directly, but this is more complicated.
 // For server-side operation,
 // WrapHandler installs a wrapper around a normal HTTP message handler.
+// Digest functionality (creation and validation of the Content-Digest header) is available automatically
+// through the Client and WrapHandler interfaces, otherwise it is available separately.
 package httpsign