From cbd8e1a8dcf43aeb0294086e2116a9e8d8cacdb3 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sat, 11 Jan 2025 21:56:12 +0200
Subject: [PATCH] Add array_assign_test.cpp

---
 test/Jamfile.v2            |  1 +
 test/array_assign_test.cpp | 60 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 test/array_assign_test.cpp

diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index 21d6cf4..c7c14bf 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -40,6 +40,7 @@ run array_size_test.cpp ;
 run array_access_test.cpp ;
 run array_c_array_test.cpp ;
 run array_fill_test.cpp ;
+run array_assign_test.cpp ;
 
 #
 
diff --git a/test/array_assign_test.cpp b/test/array_assign_test.cpp
new file mode 100644
index 0000000..91c9b16
--- /dev/null
+++ b/test/array_assign_test.cpp
@@ -0,0 +1,60 @@
+// Copyright 2025 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/array.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <cstddef>
+
+// assign is a nonstandard equivalent of fill
+// it probably needs to be deprecated and removed
+
+template<class T, std::size_t N> void test()
+{
+    boost::array<T, N> a = {};
+
+    a.assign( 1 );
+
+    for( std::size_t i = 0; i < N; ++i )
+    {
+        BOOST_TEST_EQ( a[i], 1 );
+    }
+}
+
+template<class T> void test2()
+{
+    boost::array<T, 4> a = {{ 1, 2, 3, 4 }};
+
+    a.assign( 5 );
+
+    for( std::size_t i = 0; i < 4; ++i )
+    {
+        BOOST_TEST_EQ( a[i], 5 );
+    }
+}
+
+template<class T> void test3()
+{
+    boost::array<T, 4> a = {{ 1, 2, 3, 4 }};
+
+    // aliasing
+    a.assign( a[ 1 ] );
+
+    for( std::size_t i = 0; i < 4; ++i )
+    {
+        BOOST_TEST_EQ( a[i], 2 );
+    }
+}
+
+int main()
+{
+    test<int, 0>();
+    test<int, 1>();
+    test<int, 7>();
+
+    test2<int>();
+
+    test3<int>();
+
+    return boost::report_errors();
+}