Add StreamHolder tests

3 files changed, 119 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index 5be087bfc..eb46a7cd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -460,6 +460,7 @@ tags
 /paludis/util/sha512_TEST
 /paludis/util/simple_parser_TEST
 /paludis/util/singleton_TEST
+/paludis/util/stream_holder_TEST
 /paludis/util/stringify_TEST
 /paludis/util/string_list_stream_TEST
 /paludis/util/strip_TEST
diff --git a/paludis/util/files.m4 b/paludis/util/files.m4
index 39c2f2c33..3a5aa8c13 100644
--- a/paludis/util/files.m4
+++ b/paludis/util/files.m4
@@ -79,7 +79,7 @@ add(`sha256',                            `hh', `cc', `gtest')
 add(`sha512',                            `hh', `cc', `gtest')
 add(`simple_parser',                     `hh', `cc', `gtest', `fwd')
 add(`singleton',                         `hh', `impl', `gtest')
-add(`stream_holder',                     `hh')
+add(`stream_holder',                     `hh', `gtest')
 add(`stringify',                         `hh', `gtest')
 add(`string_list_stream',                `hh', `cc', `fwd', `gtest')
 add(`strip',                             `hh', `cc', `gtest')
diff --git a/paludis/util/stream_holder_TEST.cc b/paludis/util/stream_holder_TEST.cc
new file mode 100644
index 000000000..9628fdd34
--- /dev/null
+++ b/paludis/util/stream_holder_TEST.cc
@@ -0,0 +1,117 @@
+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+
+/*
+ * Copyright (c) 2013 Wouter van Kesteren <woutershep@gmail.com>
+ *
+ * This file is part of the Paludis package manager. Paludis is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU General
+ * Public License version 2, as published by the Free Software Foundation.
+ *
+ * Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <paludis/util/stream_holder.hh>
+
+#include <sstream>
+#include <iostream>
+#include <complex>
+
+#include <gtest/gtest.h>
+
+using namespace paludis;
+
+TEST(StreamHolder, Construct)
+{
+    StreamHolder<std::stringstream> s1;
+    StreamHolder<std::ostream> s2(std::cout.rdbuf());
+    StreamHolder<std::ostringstream> s3(std::string("Goat"), std::ios_base::ate);
+}
+
+TEST(StreamHolder, Convert)
+{
+    StreamHolder<std::stringstream> s("Dog");
+    ASSERT_FALSE(!s);
+    ASSERT_TRUE(s);
+
+    std::stringstream& r(s);
+    std::stringstream* p(s);
+    ASSERT_EQ(&r, p);
+
+    ASSERT_STREQ("Dog", p->str().c_str());
+}
+
+TEST(StreamHolder, Formatted)
+{
+    StreamHolder<std::ostringstream> s;
+    std::ostringstream* p(s);
+    s << "Hello";
+    ASSERT_STREQ("Hello", p->str().c_str());
+    s << 1337;
+    ASSERT_STREQ("Hello1337", p->str().c_str());
+    s << "\n" << "World!";
+    ASSERT_STREQ("Hello1337\nWorld!", p->str().c_str());
+    s << "a" << 2.2f << 'c' << 4.4 << "e";
+    ASSERT_STREQ("Hello1337\nWorld!a2.2c4.4e", p->str().c_str());
+}
+
+// there is currently no non-member basic_ios manipulator in the standard
+// so we make our own here that does nothing but increment 'called'
+struct ios_manip {
+    static int called;
+    static std::ios& func(std::ios& rhs) {
+        called++;
+        return rhs;
+    }
+};
+
+int ios_manip::called(0);
+
+TEST(StreamHolder, Manip)
+{
+    StreamHolder<std::ostringstream> s;
+    std::ostringstream* p(s);
+
+    // basic_ostream<charT,traits>& operator<<
+    // (basic_ostream<charT,traits>& (*pf)(basic_ostream<charT,traits>&))
+    s << "J";
+    s << std::hex;
+    s << 255 << std::dec << 255;
+    ASSERT_STREQ("Jff255", p->str().c_str());
+
+    // basic_ostream<charT,traits>& operator<<
+    // (basic_ios<charT,traits>& (*pf)(basic_ios<charT,traits>&))
+    ASSERT_EQ(0, ios_manip::called);
+    s << ios_manip::func;
+    ASSERT_EQ(1, ios_manip::called);
+    s << " " << ios_manip::func << " ";
+    ASSERT_EQ(2, ios_manip::called);
+    ASSERT_STREQ("Jff255  ", p->str().c_str());
+
+    // basic_ostream<charT,traits>& operator<<
+    // (ios_base& (*pf)(ios_base&))
+    s << std::endl;
+    s << "K" << std::endl << "L";
+    ASSERT_STREQ("Jff255  \nK\nL", p->str().c_str());
+
+}
+
+TEST(StreamHolder, NonMember)
+{
+    StreamHolder<std::ostringstream> s("Complex: ", std::ios_base::ate);
+    std::ostringstream* p(s);
+
+    std::complex<float> c1(1.2f, 3.4f);
+    s << c1 << std::endl;
+    ASSERT_STREQ("Complex: (1.2,3.4)\n", p->str().c_str());
+
+    std::complex<double> c2(5.6, 7.8);
+    s << 'X' << c2 << std::endl;
+    ASSERT_STREQ("Complex: (1.2,3.4)\nX(5.6,7.8)\n", p->str().c_str());
+}