Tests

test/stdcpp/src/string.cpp

@@ -0,0 +1,17 @@
+#include <string>
+
+int fromC_val(std::string);
+int fromC_ref(const std::string&);
+
+int sumOfElements_ref(const std::string& str)
+{
+	int r = 0;
+	for (size_t i = 0; i < str.size(); ++i)
+		r += str[i];
+	return r;
+}
+
+int sumOfElements_val(std::string str)
+{
+	return sumOfElements_ref(str) + fromC_ref(str) + fromC_val(str);
+}

test/stdcpp/src/string.d

@@ -0,0 +1,56 @@
+module test.stdcpp.string;
+
+import core.stdcpp.string;
+
+extern (C++) int test_string()
+{
+    std_string str = std_string("Hello");
+
+    assert(str.size == 5);
+    assert(str.length == 5);
+    assert(str.empty == false);
+
+    assert(sumOfElements_val(str) == 1500);
+    assert(sumOfElements_ref(str) == 500);
+
+    std_string str2 = std_string(Default);
+    assert(str2.size == 0);
+    assert(str2.length == 0);
+    assert(str2.empty == true);
+    assert(str2[] == []);
+
+    return 0;
+}
+
+
+extern(C++):
+
+// test the ABI for calls to C++
+int sumOfElements_val(std_string);
+int sumOfElements_ref(ref const(std_string));
+
+// test the ABI for calls from C++
+int fromC_val(std_string str)
+{
+    assert(str[] == "Hello");
+    assert(str.front == 'H');
+    assert(str.back == 'o');
+    assert(str.at(2) == 'l');
+
+//    str.fill(2);
+
+    int r;
+    foreach (e; str)
+        r += e;
+
+    assert(r == 500);
+    return r;
+}
+
+int fromC_ref(ref const(std_string) str)
+{
+    int r;
+    foreach (e; str)
+        r += e;
+    return r;
+}