From e03d1e57e33bf214691493408abf39440f598e58 Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Thu, 2 Jul 2015 17:03:36 +1000
Subject: [PATCH] tap: add expect_throw, expect_nothrow

---
 tap.hpp |  4 ++++
 tap.ipp | 40 ++++++++++++++++++++++++++++++++++++++--
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/tap.hpp b/tap.hpp
index c1ddf001..5ffc414a 100644
--- a/tap.hpp
+++ b/tap.hpp
@@ -55,6 +55,10 @@ namespace util { namespace TAP {
         //---------------------------------------------------------------------
         template <typename T> void expect_nan (const T&, const std::string &msg = "nan");
 
+        //---------------------------------------------------------------------
+        template <typename T> void expect_nothrow (T&&, const std::string &msg = "nothrow");
+        template <typename E, typename T> void expect_throw (T&&, const std::string &msg = "throw");
+
         //---------------------------------------------------------------------
         void skip (const std::string &msg);
         void todo (const std::string &msg);
diff --git a/tap.ipp b/tap.ipp
index 570b2513..8eb580f5 100644
--- a/tap.ipp
+++ b/tap.ipp
@@ -68,8 +68,10 @@ util::TAP::logger::expect_ ## SUFFIX (const T &a,               \
                                       const U &b,               \
                                       const std::string &msg)   \
 {                                                               \
-    static const std::function<bool(const T&,const U&)> TEST = [] (const T&t, const U&u) { return t OP u; }; \
-    expect<const T&, const U&> (TEST, a, b, msg); \
+    static const std::function<                                 \
+        bool(const T&,const U&)                                 \
+    > TEST = [] (const T&t, const U&u) { return t OP u; };      \
+    expect<const T&, const U&> (TEST, a, b, msg);               \
 }
 
 TAP_TEST(gt, > )
@@ -88,3 +90,37 @@ util::TAP::logger::expect_nan (const T &t, const std::string &msg)
     bool(*func)(T) = std::isnan;
     expect<const T&> (std::function<bool(const T&)> (func), t, msg);
 }
+
+
+//-----------------------------------------------------------------------------
+template <typename T>
+void
+util::TAP::logger::expect_nothrow (T &&t, const std::string &msg)
+{
+    bool success = true;
+
+    try {
+        t ();
+    } catch (...) {
+        success = false;
+    }
+
+    expect (success, msg);
+}
+
+
+//-----------------------------------------------------------------------------
+template <typename E, typename T>
+void
+util::TAP::logger::expect_throw (T &&t, const std::string &msg)
+{
+    bool success = false;
+
+    try {
+        t ();
+    } catch (const E&) {
+        success = true;
+    }
+
+    expect (success, msg);
+}