common.test.cc

// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "common.h"

#include "gtest/gtest.h"
#include "stim.h"

TEST(common, ErrorsStructFromDemInstruction) {
  // Test a pathological DEM error instruction
  stim::DetectorErrorModel dem("error(0.1) D0 ^  D0 D1  L0 L1 L1");
  stim::DemInstruction instruction = dem.instructions.at(0);
  common::Error ES(instruction);
  EXPECT_EQ(ES.symptom.detectors, std::vector<int>{1});
  EXPECT_EQ(ES.symptom.observables, 0b01);
}