add seletor for createPermission

scm-ui/src/permissions/modules/permissions.js

@@ -360,3 +360,11 @@ export function getModifyPermissionFailure(
     namespace + "/" + name + "/" + permissionname
   );
 }
+
+export function hasCreatePermission(
+  state: Object,
+  namespace: string,
+  name: string
+) {
+  return state.permissions[namespace + "/" + name].createPermission;
+}

scm-ui/src/permissions/modules/permissions.test.js

@@ -13,6 +13,7 @@ import reducer, {
   getModifyPermissionFailure,
   isModifyPermissionPending,
   createPermission,
+  hasCreatePermission,
   MODIFY_PERMISSION_FAILURE,
   MODIFY_PERMISSION_PENDING,
   FETCH_PERMISSIONS,
@@ -433,4 +434,19 @@ describe("permissions selectors", () => {
       getModifyPermissionFailure({}, "hitchhiker", "puzzle42", "user_eins")
     ).toBe(undefined);
   });
+
+  it("should return true, when createPermission is true", () => {
+    const state = {
+      permissions: {
+        ["/hitchhiker/puzzle42"]: {
+          createPermission: true
+        }
+      }
+    };
+    expect(hasCreatePermission(state, "hitchhiker", "puzzle42")).toBe(true);
+  });
+
+  it("should return false, when createPermission is false", () => {
+    expect(hasCreatePermission({}, "hitchiker", "puzzle42")).toEqual(false);
+  });
 });