// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
#pragma once
#include <iosfwd>
#include "arrow/testing/gtest_util.h"
#include "arrow/util/iterator.h"
namespace arrow {
struct TestInt {
TestInt();
TestInt(int i); // NOLINT runtime/explicit
int value;
bool operator==(const TestInt& other) const;
friend std::ostream& operator<<(std::ostream& os, const TestInt& v);
};
template <>
struct IterationTraits<TestInt> {
static TestInt End() { return TestInt(); }
static bool IsEnd(const TestInt& val) { return val == IterationTraits<TestInt>::End(); }
};
struct TestStr {
TestStr();
TestStr(const std::string& s); // NOLINT runtime/explicit
TestStr(const char* s); // NOLINT runtime/explicit
explicit TestStr(const TestInt& test_int);
std::string value;
bool operator==(const TestStr& other) const;
friend std::ostream& operator<<(std::ostream& os, const TestStr& v);
};
template <>
struct IterationTraits<TestStr> {
static TestStr End() { return TestStr(); }
static bool IsEnd(const TestStr& val) { return val == IterationTraits<TestStr>::End(); }
};
std::vector<TestInt> RangeVector(unsigned int max, unsigned int step = 1);
template <typename T>
inline Iterator<T> VectorIt(std::vector<T> v) {
return MakeVectorIterator<T>(std::move(v));
}
template <typename T>
inline Iterator<T> PossiblySlowVectorIt(std::vector<T> v, bool slow = false) {
auto iterator = MakeVectorIterator<T>(std::move(v));
if (slow) {
return MakeTransformedIterator<T, T>(std::move(iterator),
[](T item) -> Result<TransformFlow<T>> {
SleepABit();
return TransformYield(item);
});
} else {
return iterator;
}
}
template <typename T>
inline void AssertIteratorExhausted(Iterator<T>& it) {
ASSERT_OK_AND_ASSIGN(T next, it.Next());
ASSERT_TRUE(IsIterationEnd(next));
}
Transformer<TestInt, TestStr> MakeFilter(std::function<bool(TestInt&)> filter);
} // namespace arrow