From cca66b9ec4e494c1d919bff0f71a820d8afab1fa Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:24:48 +0200
Subject: Adding upstream version 1.2.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/3rdparty/2geom/tests/choose-test.cpp | 72 ++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 src/3rdparty/2geom/tests/choose-test.cpp

(limited to 'src/3rdparty/2geom/tests/choose-test.cpp')

diff --git a/src/3rdparty/2geom/tests/choose-test.cpp b/src/3rdparty/2geom/tests/choose-test.cpp
new file mode 100644
index 0000000..766fa0c
--- /dev/null
+++ b/src/3rdparty/2geom/tests/choose-test.cpp
@@ -0,0 +1,72 @@
+/** @file
+ * @brief Unit tests for the binomial coefficient function.
+ * Uses the Google Testing Framework
+ *//*
+ * Authors:
+ *   Krzysztof Kosiński <tweenk.pl@gmail.com>
+ * 
+ * Copyright 2015 Authors
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ */
+
+#include "testing.h"
+#include <2geom/choose.h>
+#include <glib.h>
+
+using namespace Geom;
+
+TEST(ChooseTest, PascalsTriangle) {
+    // check whether the values match Pascal's triangle
+    for (unsigned i = 0; i < 500; ++i) {
+        int n = g_random_int_range(3, 100);
+        int k = g_random_int_range(1, n-1);
+
+        double a = choose<double>(n, k);
+        double b = choose<double>(n-1, k);
+        double c = choose<double>(n-1, k-1);
+
+        EXPECT_EQ(a, b + c);
+    }
+}
+
+TEST(ChooseTest, Values) {
+    // test some well-known values
+    EXPECT_EQ(choose<double>(0, 0), 1);
+    EXPECT_EQ(choose<double>(1, 0), 1);
+    EXPECT_EQ(choose<double>(1, 1), 1);
+    EXPECT_EQ(choose<double>(127, 127), 1);
+    EXPECT_EQ(choose<double>(92, 0), 1);
+    EXPECT_EQ(choose<double>(2, 1), 2);
+
+    // number of possible flops in Texas Hold 'Em Poker
+    EXPECT_EQ(choose<double>(50,  3), 19600.);
+    EXPECT_EQ(choose<double>(50, 47), 19600.);
+    // number of possible hands in bridge
+    EXPECT_EQ(choose<double>(52, 13), 635013559600.);
+    EXPECT_EQ(choose<double>(52, 39), 635013559600.);
+    // number of possible Lotto results
+    EXPECT_EQ(choose<double>(49,  6), 13983816.);
+    EXPECT_EQ(choose<double>(49, 43), 13983816.);
+}
-- 
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