Add simple tests for agi::Split

tests/tests/split.cpp

@@ -0,0 +1,47 @@
+// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+//
+// Aegisub Project http://www.aegisub.org/
+
+#include <main.h>
+#include <util.h>
+
+#include <libaegisub/split.h>
+
+TEST(lagi_split, delim_not_present) {
+	std::string str("hello");
+	for (auto tok : agi::Split(str, ','))
+		EXPECT_EQ("hello", agi::str(tok));
+}
+
+TEST(lagi_split, delim_present) {
+	std::string str("a,b,c,");
+	std::string expected[] = {"a", "b", "c", ""};
+	size_t i = 0;
+	for (auto tok : agi::Split(str, ','))
+		EXPECT_EQ(expected[i++], agi::str(tok));
+}
+
+TEST(lagi_split, does_not_copy_input) {
+	std::string str("hello");
+	for (auto tok : agi::Split(str, ',')) {
+		EXPECT_EQ(str.begin(), tok.begin());
+		EXPECT_EQ(str.end(), tok.end());
+	}
+
+	auto rng = agi::Split(str, 'e');
+	EXPECT_EQ(str.begin(), rng->begin());
+	EXPECT_EQ(str.end(), std::next(rng)->end());
+}
+