From 78023285010530609990114fd685634f410b1876 Mon Sep 17 00:00:00 2001
From: "Nikolay (KrivobokovNS)" <KrivobokovNS@mpei.ru>
Date: Thu, 21 Aug 2025 14:08:47 +0300
Subject: [PATCH] =?UTF-8?q?code:=20=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB?=
 =?UTF-8?q?=D0=B5=D0=BD=20=D1=84=D0=B0=D0=B9=D0=BB=20=D0=BC=D0=BE=D0=B4?=
 =?UTF-8?q?=D1=83=D0=BB=D1=8C=D0=BD=D1=8B=D1=85=20=D1=82=D0=B5=D1=81=D1=82?=
 =?UTF-8?q?=D0=BE=D0=B2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 unittest.cpp | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 unittest.cpp

diff --git a/unittest.cpp b/unittest.cpp
new file mode 100644
index 0000000..c26c42f
--- /dev/null
+++ b/unittest.cpp
@@ -0,0 +1,44 @@
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+
+TEST_CASE("distinct positive numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+
+TEST_CASE("empty vector") {
+    double min = 0;
+    double max = 0;
+    find_minmax({}, min, max);
+    CHECK(min == 0);
+    CHECK(max == 0);
+}
+
+TEST_CASE("single element vector") {
+    double min = 0;
+    double max = 0;
+    find_minmax({5}, min, max);
+    CHECK(min == 5);
+    CHECK(max == 5);
+}
+
+TEST_CASE("negative numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({-3, -1}, min, max);
+    CHECK(min == -3);
+    CHECK(max == -1);
+}
+
+TEST_CASE("identical elements") {
+    double min = 0;
+    double max = 0;
+    find_minmax({4, 4, 4}, min, max);
+    CHECK(min == 4);
+    CHECK(max == 4);
+}