fix: cascading changes for usergrants when managing projects / projectgrants (#3035)

internal/query/projection/user_grant_test.go

@@ -324,6 +324,62 @@ func TestUserGrantProjection_reduces(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "reduceRoleRemoved",
+			args: args{
+				event: getEvent(testEvent(
+					repository.EventType(project.RoleRemovedType),
+					project.AggregateType,
+					[]byte(`{"key": "key"}`),
+				), project.RoleRemovedEventMapper),
+			},
+			reduce: (&UserGrantProjection{}).reduceRoleRemoved,
+			want: wantReduce{
+				aggregateType:    project.AggregateType,
+				sequence:         15,
+				previousSequence: 10,
+				projection:       UserGrantProjectionTable,
+				executer: &testExecuter{
+					executions: []execution{
+						{
+							expectedStmt: "UPDATE zitadel.projections.user_grants SET (roles) = (array_remove(roles, $1)) WHERE (project_id = $2)",
+							expectedArgs: []interface{}{
+								"key",
+								"agg-id",
+							},
+						},
+					},
+				},
+			},
+		},
+		{
+			name: "reduceProjectGrantChanged",
+			args: args{
+				event: getEvent(testEvent(
+					repository.EventType(project.GrantChangedType),
+					project.AggregateType,
+					[]byte(`{"grantId": "grantID", "roleKeys": ["key"]}`),
+				), project.GrantChangedEventMapper),
+			},
+			reduce: (&UserGrantProjection{}).reduceProjectGrantChanged,
+			want: wantReduce{
+				aggregateType:    project.AggregateType,
+				sequence:         15,
+				previousSequence: 10,
+				projection:       UserGrantProjectionTable,
+				executer: &testExecuter{
+					executions: []execution{
+						{
+							expectedStmt: "UPDATE zitadel.projections.user_grants SET (roles) = (SELECT ARRAY( SELECT UNNEST(roles) INTERSECT SELECT UNNEST ($1::STRING[]))) WHERE (grant_id = $2)",
+							expectedArgs: []interface{}{
+								pq.StringArray{"key"},
+								"grantID",
+							},
+						},
+					},
+				},
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {