Restructure test suite to follow libc++ standard layout

Summary: Subsumes changes requested in https://reviews.llvm.org/D59110

Reviewers: EricWF, ldionne

Subscribers: mgorny, krytarowski, jfb, jdoerfert, libcxx-commits

Differential Revision: https://reviews.llvm.org/D59856

llvm-svn: 357124

1 files changed, 138 insertions, 0 deletions

diff --git a/pstl/test/std/algorithms/alg.modifying.operations/unique_copy_equal.pass.cpp b/pstl/test/std/algorithms/alg.modifying.operations/unique_copy_equal.pass.cpp
new file mode 100644
index 00000000000..c948e80d45a
--- /dev/null
+++ b/pstl/test/std/algorithms/alg.modifying.operations/unique_copy_equal.pass.cpp
@@ -0,0 +1,138 @@
+// -*- C++ -*-
+//===-- unique_copy_equal.pass.cpp ----------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Tests for unique_copy
+#include "support/pstl_test_config.h"
+
+#ifdef PSTL_STANDALONE_TESTS
+#include "pstl/execution"
+#include "pstl/algorithm"
+#else
+#include <execution>
+#include <algorithm>
+#endif // PSTL_STANDALONE_TESTS
+
+#include "support/utils.h"
+
+using namespace TestUtils;
+
+struct run_unique_copy
+{
+#if __PSTL_ICC_16_VC14_TEST_PAR_TBB_RT_RELEASE_64_BROKEN // dummy specializations to skip testing in case of broken configuration
+    template <typename InputIterator, typename OutputIterator, typename OutputIterator2, typename Size,
+              typename Predicate, typename T>
+    void
+    operator()(pstl::execution::parallel_policy, InputIterator first, InputIterator last, OutputIterator out_first,
+               OutputIterator out_last, OutputIterator2 expected_first, OutputIterator2 expected_last, Size n,
+               Predicate pred, T trash)
+    {
+    }
+
+    template <typename InputIterator, typename OutputIterator, typename OutputIterator2, typename Size,
+              typename Predicate, typename T>
+    void
+    operator()(pstl::execution::parallel_unsequenced_policy, InputIterator first, InputIterator last,
+               OutputIterator out_first, OutputIterator out_last, OutputIterator2 expected_first,
+               OutputIterator2 expected_last, Size n, Predicate pred, T trash)
+    {
+    }
+#endif
+
+    template <typename Policy, typename InputIterator, typename OutputIterator, typename OutputIterator2, typename Size,
+              typename Predicate, typename T>
+    void
+    operator()(Policy&& exec, InputIterator first, InputIterator last, OutputIterator out_first,
+               OutputIterator out_last, OutputIterator2 expected_first, OutputIterator2 expected_last, Size n,
+               Predicate pred, T trash)
+    {
+        // Cleaning
+        std::fill_n(expected_first, n, trash);
+        std::fill_n(out_first, n, trash);
+
+        // Run unique_copy
+        auto i = unique_copy(first, last, expected_first);
+        auto k = unique_copy(exec, first, last, out_first);
+        EXPECT_EQ_N(expected_first, out_first, n, "wrong unique_copy effect");
+        for (size_t j = 0; j < GuardSize; ++j)
+        {
+            ++k;
+        }
+        EXPECT_TRUE(out_last == k, "wrong return value from unique_copy");
+
+        // Cleaning
+        std::fill_n(expected_first, n, trash);
+        std::fill_n(out_first, n, trash);
+        // Run unique_copy with predicate
+        i = unique_copy(first, last, expected_first, pred);
+        k = unique_copy(exec, first, last, out_first, pred);
+        EXPECT_EQ_N(expected_first, out_first, n, "wrong unique_copy with predicate effect");
+        for (size_t j = 0; j < GuardSize; ++j)
+        {
+            ++k;
+        }
+        EXPECT_TRUE(out_last == k, "wrong return value from unique_copy with predicate");
+    }
+};
+
+template <typename T, typename BinaryPredicate, typename Convert>
+void
+test(T trash, BinaryPredicate pred, Convert convert, bool check_weakness = true)
+{
+    // Try sequences of various lengths.
+    for (size_t n = 0; n <= 100000; n = n <= 16 ? n + 1 : size_t(3.1415 * n))
+    {
+        // count is number of output elements, plus a handful
+        // more for sake of detecting buffer overruns.
+        Sequence<T> in(n, [&](size_t k) -> T { return convert(k ^ n); });
+        using namespace std;
+        size_t count = GuardSize;
+        for (size_t k = 0; k < in.size(); ++k)
+            count += k == 0 || !pred(in[k], in[k - 1]) ? 1 : 0;
+        Sequence<T> out(count, [=](size_t) { return trash; });
+        Sequence<T> expected(count, [=](size_t) { return trash; });
+        if (check_weakness)
+        {
+            auto expected_result = unique_copy(in.begin(), in.end(), expected.begin(), pred);
+            size_t m = expected_result - expected.begin();
+            EXPECT_TRUE(n / (n < 10000 ? 4 : 6) <= m && m <= (3 * n + 1) / 4, "weak test for unique_copy");
+        }
+        invoke_on_all_policies(run_unique_copy(), in.begin(), in.end(), out.begin(), out.end(), expected.begin(),
+                               expected.end(), count, pred, trash);
+    }
+}
+
+template <typename T>
+struct test_non_const
+{
+    template <typename Policy, typename InputIterator, typename OutputInterator>
+    void
+    operator()(Policy&& exec, InputIterator input_iter, OutputInterator out_iter)
+    {
+        unique_copy(exec, input_iter, input_iter, out_iter, non_const(std::equal_to<T>()));
+    }
+};
+
+int32_t
+main(int32_t argc, char* argv[])
+{
+    test<Number>(Number(42, OddTag()), std::equal_to<Number>(),
+                 [](int32_t j) { return Number(3 * j / 13 ^ (j & 8), OddTag()); });
+
+    test<float32_t>(float32_t(42), std::equal_to<float32_t>(),
+                    [](int32_t j) { return float32_t(5 * j / 23 ^ (j / 7)); });
+#if !__PSTL_ICC_16_17_TEST_REDUCTION_RELEASE_BROKEN
+    test<float32_t>(float32_t(42), [](float32_t x, float32_t y) { return false; },
+                    [](int32_t j) { return float32_t(j); }, false);
+#endif
+
+    test_algo_basic_double<int32_t>(run_for_rnd_fw<test_non_const<int32_t>>());
+
+    std::cout << done() << std::endl;
+    return 0;
+}