unittest for newly added member functions

source/stdcpp/test/vector.d

@@ -8,11 +8,35 @@ module stdcpp.test.vector;
 import stdcpp.vector;
 import stdcpp.allocator;
 int a = 42;
+int b = 9;
 allocator!int alloc_instance = allocator!(int).init;
 unittest
 {
     auto vec = vector!int(4, alloc_instance);
     vec.push_back(a);
     assert(vec.length == 5);
     assert(vec[4] == 42);
+	assert(vec.at(3) == 0);
+	vec.pop_back();
+	assert(vec.length == 4);
+	vec.clear();
+	assert(vec.empty == 1);
+}
+
+
+
+unittest
+{
+	auto p = vector!int(4, b, alloc_instance);
+	assert(p.capacity() == 4);
+	p.reserve(6);
+	assert(p.capacity() == 6);
+	//3 push backs to reallocate memory by 2 after initially capacity fills up
+	p.push_back(a);
+	p.push_back(a);//capacity is 6 now
+	p.push_back(a);
+	assert(p.capacity() == 12);
+	p.resize(5);
+	assert(p.length == 5);
+	assert(p.sizeof == 24);//verifying three pointers
 }