vendor/libc++/libc++-release_370-r246257

1 files changed, 36 insertions, 0 deletions

diff --git a/test/std/algorithms/alg.nonmodifying/alg.count/count_if.pass.cpp b/test/std/algorithms/alg.nonmodifying/alg.count/count_if.pass.cpp
new file mode 100644
index 0000000000000..025bc06a618da
--- /dev/null
+++ b/test/std/algorithms/alg.nonmodifying/alg.count/count_if.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   Iter::difference_type
+//   count_if(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_iterators.h"
+
+int main()
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::count_if(input_iterator<const int*>(ia),
+                         input_iterator<const int*>(ia + sa),
+                         std::bind2nd(std::equal_to<int>(),2)) == 3);
+    assert(std::count_if(input_iterator<const int*>(ia),
+                         input_iterator<const int*>(ia + sa),
+                         std::bind2nd(std::equal_to<int>(),7)) == 0);
+    assert(std::count_if(input_iterator<const int*>(ia),
+                         input_iterator<const int*>(ia),
+                         std::bind2nd(std::equal_to<int>(),2)) == 0);
+}