fix: test

Signed-off-by: Junjie Gao <[email protected]>

Author: JeyJeyGao

plugin/testdata/plugins/foo/notation-foo

@@ -220,7 +220,7 @@ func TestValidateInvalidPolicyDocument(t *testing.T) {
 	policyDoc = dummyOCIPolicyDocument()
 	policyDoc.TrustPolicies[0].TrustedIdentities = []string{"x509.subject"}
 	err = policyDoc.Validate()
-	if err == nil || err.Error() != "oci trust policy: trust policy statement \"test-statement-name\" has trusted identity \"x509.subject\" missing separator" {
+	if err == nil || err.Error() != "oci trust policy: trust policy statement \"test-statement-name\" has trusted identity \"x509.subject\" missing separator. The required format is <trustedIdentityType>:<trustedIdentityValues>" {
 		t.Fatalf("policy statement with trusted identity missing separator should return error")
 	}
 

verifier/trustpolicy/oci_test.go

@@ -104,7 +104,7 @@ func TestValidatePolicyCore(t *testing.T) {
 		t.Errorf("expected error '%s' but not found", expectedErr)
 	}
 
-	expectedErr = "trust policy statement \"test-statement-name\" has trusted identity \"x509.subject\" missing separator"
+	expectedErr = "trust policy statement \"test-statement-name\" has trusted identity \"x509.subject\" missing separator. The required format is <trustedIdentityType>:<trustedIdentityValues>"
 	if err := validatePolicyCore(policyName, sigVerification, []string{"ca:valid-ts"}, []string{"x509.subject"}); err == nil || err.Error() != expectedErr {
 		t.Errorf("expected error '%s' but not found", expectedErr)
 	}
@@ -152,7 +152,7 @@ func TestValidateTrustedIdentities(t *testing.T) {
 
 	// No trusted identity prefix throws error
 	err = validateTrustedIdentities("test-statement-name", []string{"C=US, ST=WA, O=wabbit-network.io, OU=org1"})
-	if err == nil || err.Error() != "trust policy statement \"test-statement-name\" has trusted identity \"C=US, ST=WA, O=wabbit-network.io, OU=org1\" missing separator" {
+	if err == nil || err.Error() != "trust policy statement \"test-statement-name\" has trusted identity \"C=US, ST=WA, O=wabbit-network.io, OU=org1\" missing separator. The required format is <trustedIdentityType>:<trustedIdentityValues>" {
 		t.Fatalf("trusted identity without separator should return error")
 	}
 

verifier/trustpolicy/trustpolicy_test.go

@@ -270,7 +270,7 @@ func assertNotationVerification(t *testing.T, scheme signature.SigningScheme) {
 	for _, level := range verificationLevels {
 		policyDocument := dummyOCIPolicyDocument()
 		policyDocument.TrustPolicies[0].TrustedIdentities = []string{"x509.subject"}
-		expectedErr := fmt.Errorf("trust policy statement \"test-statement-name\" has trusted identity \"x509.subject\" missing separator")
+		expectedErr := fmt.Errorf("trust policy statement \"test-statement-name\" has trusted identity \"x509.subject\" missing separator. The required format is <trustedIdentityType>:<trustedIdentityValues>")
 		testCases = append(testCases, testCase{
 			signatureBlob:     validSigEnv,
 			verificationType:  trustpolicy.TypeAuthenticity,