fix: Correctly allow sharees to test credential when opening the modal (#6111)

* fix: Prevent incorrect error message when sharee opens a credential

* test: Add testing for automated credential testing

* chore: Remove unnecessary comments

packages/editor-ui/src/components/CredentialEdit/CredentialConfig.vue

@@ -58,6 +58,7 @@
 			:buttonTitle="$locale.baseText('credentialEdit.credentialConfig.retryCredentialTest')"
 			:buttonLoading="isRetesting"
 			@click="$emit('retest')"
+			data-test-id="credentials-config-container-test-success"
 		/>
 
 		<template v-if="credentialPermissions.updateConnection">

packages/editor-ui/src/components/CredentialEdit/CredentialEdit.vue

@@ -256,7 +256,9 @@ export default mixins(showMessage, nodeHelpers).extend({
 
 		setTimeout(() => {
 			if (this.credentialId) {
-				if (!this.requiredPropertiesFilled) {
+				if (!this.requiredPropertiesFilled && this.credentialPermissions.isOwner === true) {
+					// sharees can't see properties, so this check would always fail for them
+					// if the credential contains required fields.
 					this.showValidationWarning = true;
 				} else {
 					this.retestCredential();
@@ -347,6 +349,10 @@ export default mixins(showMessage, nodeHelpers).extend({
 			};
 		},
 		isCredentialTestable(): boolean {
+			// Sharees can always test since they can't see the data.
+			if (this.credentialPermissions.isOwner === false) {
+				return true;
+			}
 			if (this.isOAuthType || !this.requiredPropertiesFilled) {
 				return false;
 			}