diff options
Diffstat (limited to 'tests/small-vector')
-rw-r--r-- | tests/small-vector/buildfile | 8 | ||||
-rw-r--r-- | tests/small-vector/driver.cxx | 132 |
2 files changed, 140 insertions, 0 deletions
diff --git a/tests/small-vector/buildfile b/tests/small-vector/buildfile new file mode 100644 index 0000000..78d2d06 --- /dev/null +++ b/tests/small-vector/buildfile @@ -0,0 +1,8 @@ +# file : tests/small-vector/buildfile +# copyright : Copyright (c) 2014-2016 Code Synthesis Ltd +# license : MIT; see accompanying LICENSE file + +exe{driver}: cxx{driver} ../../butl/lib{butl} +exe{driver}: test.arguments = $src_root + +include ../../butl/ diff --git a/tests/small-vector/driver.cxx b/tests/small-vector/driver.cxx new file mode 100644 index 0000000..5b7cfa6 --- /dev/null +++ b/tests/small-vector/driver.cxx @@ -0,0 +1,132 @@ +// file : tests/small-vector/driver.cxx -*- C++ -*- +// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#include <string> +#include <cassert> +#include <iostream> + +#include <butl/small-vector> + +using namespace std; +using namespace butl; + +// Return if v.data() points to somewhere inside v. +// +template <typename T, size_t N> +inline bool +small (const small_vector<T, N>& v) +{ + const void* d (v.data ()); + return d >= &v && d < (&v + 1); +} + +int +main () +{ + using vector = small_vector<string, 1>; + + { + vector v; + assert (v.capacity () == 1 && small (v)); + + v.push_back ("abc"); + assert (v[0] == "abc" && v.capacity () == 1 && small (v)); + + string* d (v.data ()); // Small buffer... + + v.push_back ("xyz"); + assert (v[0] == "abc" && v.data () != d && !small (v)); + + v.pop_back (); + v.shrink_to_fit (); + assert (v[0] == "abc" && v.data () == d); + } + + // Allocator comparison. + // + { + vector v1, v2; + assert (v1.get_allocator () != v2.get_allocator ()); // stack/stack + + v1.assign ({"abc", "xyz"}); + assert (v1.get_allocator () != v2.get_allocator ()); // heap/stack + + v2.assign ({"abc", "xyz"}); + assert (v1.get_allocator () == v2.get_allocator ()); // heap/heap + + v1.pop_back (); + v1.shrink_to_fit (); + assert (v1.get_allocator () != v2.get_allocator ()); // stack/heap + + v2.pop_back (); + v2.shrink_to_fit (); + assert (v1.get_allocator () != v2.get_allocator ()); // stack/stack + } + + // Copy constructor. + // + { + vector s1 ({"abc"}), s2 (s1); + assert (s1 == s2 && s2.capacity () == 1 && small (s2)); + + vector l1 ({"abc", "xyz"}), l2 (l1); + assert (l1 == l2 && !small (l2)); + } + + // Move constructor. + // + { + struct mstring: string // Move-only string. + { + mstring () = default; + explicit mstring (const char* s): string (s) {} + + mstring (mstring&&) = default; + mstring& operator= (mstring&&) = default; + + mstring (const mstring&) = delete; + mstring& operator= (const mstring&) = delete; + }; + + using vector = small_vector<mstring, 1>; + + vector s1; s1.emplace_back ("abc"); + vector s2 (move (s1)); + assert (s2[0] == "abc" && s2.capacity () == 1 && small (s2)); + + vector l1; l1.emplace_back ("abc"); l1.emplace_back ("xyz"); + vector l2 (move (l1)); + assert (l2[0] == "abc" && l2[1] == "xyz" && !small (l2)); + } + + // Other constructors. + // + + { + const char* sa[] = {"abc"}; + const char* la[] = {"abc", "xyz"}; + + vector s (sa, sa + 1); + assert (s[0] == "abc" && s.capacity () == 1 && small (s)); + + vector l (la, la + 2); + assert (l[0] == "abc" && l[1] == "xyz" && !small (l)); + } + + { + vector s (1, "abc"); + assert (s[0] == "abc" && s.capacity () == 1 && small (s)); + + vector l (2, "abc"); + assert (l[0] == "abc" && l[1] == "abc" && !small (l)); + } + + { + vector s (1); + assert (s[0] == "" && s.capacity () == 1 && small (s)); + + vector l (2); + assert (l[0] == "" && l[1] == "" && !small (l)); + } +} |