1 files changed, 99 insertions, 0 deletions
diff --git a/pstl/test/test_is_partitioned.cpp b/pstl/test/test_is_partitioned.cpp
new file mode 100644
index 00000000000..59ae8de54a2
--- /dev/null
+++ b/pstl/test/test_is_partitioned.cpp
@@ -0,0 +1,99 @@
+// -*- C++ -*-
+//===-- test_is_partitioned.cpp -------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "pstl_test_config.h"
+
+#include "pstl/execution"
+#include "pstl/algorithm"
+#include "utils.h"
+
+using namespace TestUtils;
+
+struct test_one_policy
+{
+    //dummy specialization by policy type, in case of broken configuration
+#if __PSTL_ICC_17_VC141_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN || __PSTL_ICC_16_VC14_TEST_SIMD_LAMBDA_DEBUG_32_BROKEN
+
+    template <typename Iterator1, typename Predicate>
+    void
+    operator()(pstl::execution::unsequenced_policy, Iterator1 begin1, Iterator1 end1, Predicate pred)
+    {
+    }
+    template <typename Iterator1, typename Predicate>
+    void
+    operator()(pstl::execution::parallel_unsequenced_policy, Iterator1 begin1, Iterator1 end1, Predicate pred)
+    {
+    }
+#endif
+
+    template <typename ExecutionPolicy, typename Iterator1, typename Predicate>
+    void
+    operator()(ExecutionPolicy&& exec, Iterator1 begin1, Iterator1 end1, Predicate pred)
+    {
+        const bool expected = std::is_partitioned(begin1, end1, pred);
+        const bool actual = std::is_partitioned(exec, begin1, end1, pred);
+        EXPECT_TRUE(actual == expected, "wrong return result from is_partitioned");
+    }
+};
+
+template <typename T, typename Predicate>
+void
+test(Predicate pred)
+{
+
+    const std::size_t max_n = 1000000;
+    Sequence<T> in(max_n, [](std::size_t k) { return T(k); });
+
+    for (std::size_t n1 = 0; n1 <= max_n; n1 = n1 <= 16 ? n1 + 1 : std::size_t(3.1415 * n1))
+    {
+        invoke_on_all_policies(test_one_policy(), in.begin(), in.begin() + n1, pred);
+        std::partition(in.begin(), in.begin() + n1, pred);
+        invoke_on_all_policies(test_one_policy(), in.cbegin(), in.cbegin() + n1, pred);
+    }
+}
+
+template <typename T>
+struct LocalWrapper
+{
+    explicit LocalWrapper(std::size_t k) : my_val(k) {}
+
+  private:
+    T my_val;
+};
+
+struct test_non_const
+{
+    template <typename Policy, typename Iterator>
+    void
+    operator()(Policy&& exec, Iterator iter)
+    {
+        auto is_even = [&](float64_t v) {
+            uint32_t i = (uint32_t)v;
+            return i % 2 == 0;
+        };
+        invoke_if(exec, [&]() { is_partitioned(exec, iter, iter, non_const(is_even)); });
+    }
+};
+
+int32_t
+main()
+{
+    test<float64_t>([](const float64_t x) { return x < 0; });
+    test<int32_t>([](const int32_t x) { return x > 1000; });
+    test<uint16_t>([](const uint16_t x) { return x % 5 < 3; });
+#if !__PSTL_ICC_18_TEST_EARLY_EXIT_MONOTONIC_RELEASE_BROKEN && !__PSTL_ICC_19_TEST_IS_PARTITIONED_RELEASE_BROKEN
+    test<LocalWrapper<float64_t>>([](const LocalWrapper<float64_t>& x) { return true; });
+#endif
+
+    test_algo_basic_single<int32_t>(run_for_rnd_fw<test_non_const>());
+
+    std::cout << done() << std::endl;
+    return 0;
+}