From 5a1fbe60af91e1f04f2e0f30e793583e5e21f1fb Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@gmail.com>
Date: Tue, 15 Nov 2022 17:30:58 +0100
Subject: [PATCH] test/TestStringFilter: new unit test

---
 test/TestStringFilter.cxx | 129 ++++++++++++++++++++++++++++++++++++++
 test/meson.build          |   1 +
 2 files changed, 130 insertions(+)
 create mode 100644 test/TestStringFilter.cxx

diff --git a/test/TestStringFilter.cxx b/test/TestStringFilter.cxx
new file mode 100644
index 000000000..80ac38122
--- /dev/null
+++ b/test/TestStringFilter.cxx
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2003-2022 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "song/StringFilter.hxx"
+#include "lib/icu/Init.hxx"
+#include "config.h"
+
+#include <gtest/gtest.h>
+
+class StringFilterTest : public ::testing::Test {
+protected:
+	void SetUp() override {
+		IcuInit();
+	}
+
+	void TearDown() override {
+		IcuFinish();
+	}
+};
+
+TEST_F(StringFilterTest, ASCII)
+{
+	const StringFilter f{"needle", false, false, false, false};
+
+	EXPECT_TRUE(f.Match("needle"));
+	EXPECT_FALSE(f.Match("nëedle"));
+	EXPECT_FALSE(f.Match("néedle"));
+	EXPECT_FALSE(f.Match("nèedle"));
+	EXPECT_FALSE(f.Match("nêedle"));
+	EXPECT_FALSE(f.Match("Needle"));
+	EXPECT_FALSE(f.Match("NEEDLE"));
+	EXPECT_FALSE(f.Match(""));
+	EXPECT_FALSE(f.Match("foo"));
+	EXPECT_FALSE(f.Match("needleBAR"));
+	EXPECT_FALSE(f.Match("FOOneedleBAR"));
+}
+
+TEST_F(StringFilterTest, Negated)
+{
+	const StringFilter f{"needle", false, false, false, true};
+
+	EXPECT_FALSE(f.Match("needle"));
+	EXPECT_TRUE(f.Match("Needle"));
+	EXPECT_TRUE(f.Match("NEEDLE"));
+	EXPECT_TRUE(f.Match(""));
+	EXPECT_TRUE(f.Match("foo"));
+	EXPECT_TRUE(f.Match("needleBAR"));
+	EXPECT_TRUE(f.Match("FOOneedleBAR"));
+}
+
+TEST_F(StringFilterTest, StartsWith)
+{
+	const StringFilter f{"needle", false, false, true, false};
+
+	EXPECT_TRUE(f.Match("needle"));
+	EXPECT_FALSE(f.Match("Needle"));
+	EXPECT_FALSE(f.Match("NEEDLE"));
+	EXPECT_FALSE(f.Match(""));
+	EXPECT_FALSE(f.Match("foo"));
+	EXPECT_TRUE(f.Match("needleBAR"));
+	EXPECT_FALSE(f.Match("NeedleBAR"));
+	EXPECT_FALSE(f.Match("FOOneedleBAR"));
+}
+
+TEST_F(StringFilterTest, IsIn)
+{
+	const StringFilter f{"needle", false, true, false, false};
+
+	EXPECT_TRUE(f.Match("needle"));
+	EXPECT_FALSE(f.Match("Needle"));
+	EXPECT_FALSE(f.Match("NEEDLE"));
+	EXPECT_FALSE(f.Match(""));
+	EXPECT_FALSE(f.Match("foo"));
+	EXPECT_TRUE(f.Match("needleBAR"));
+	EXPECT_FALSE(f.Match("NeedleBAR"));
+	EXPECT_TRUE(f.Match("FOOneedleBAR"));
+}
+
+TEST_F(StringFilterTest, Latin)
+{
+	const StringFilter f{"nëedlé", false, false, false, false};
+
+	EXPECT_TRUE(f.Match("nëedlé"));
+	EXPECT_FALSE(f.Match("NËEDLÉ"));
+	EXPECT_FALSE(f.Match("needlé"));
+	EXPECT_FALSE(f.Match("néedlé"));
+	EXPECT_FALSE(f.Match("nèedlé"));
+	EXPECT_FALSE(f.Match("nêedlé"));
+	EXPECT_FALSE(f.Match("Needlé"));
+	EXPECT_FALSE(f.Match("NEEDLÉ"));
+	EXPECT_FALSE(f.Match(""));
+	EXPECT_FALSE(f.Match("foo"));
+	EXPECT_FALSE(f.Match("FOOnëedleBAR"));
+}
+
+TEST_F(StringFilterTest, FoldCase)
+{
+	const StringFilter f{"nëedlé", true, false, false, false};
+
+	EXPECT_TRUE(f.Match("nëedlé"));
+#if defined(HAVE_ICU) || defined(_WIN32)
+	EXPECT_TRUE(f.Match("NËEDLÉ"));
+#endif
+	EXPECT_FALSE(f.Match("needlé"));
+	EXPECT_FALSE(f.Match("néedlé"));
+	EXPECT_FALSE(f.Match("nèedlé"));
+	EXPECT_FALSE(f.Match("nêedlé"));
+	EXPECT_FALSE(f.Match("Needlé"));
+	EXPECT_FALSE(f.Match("NEEDLÉ"));
+	EXPECT_FALSE(f.Match(""));
+	EXPECT_FALSE(f.Match("foo"));
+	EXPECT_FALSE(f.Match("FOOnëedleBAR"));
+}
diff --git a/test/meson.build b/test/meson.build
index 5ef4d6f0a..8433ee069 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -199,6 +199,7 @@ test(
   'TestSongFilter',
   executable(
     'TestSongFilter',
+    'TestStringFilter.cxx',
     'TestTagSongFilter.cxx',
     include_directories: inc,
     dependencies: [