From 3e0f5aa9a39eb2d5ec0d97187a31818feb021bf0 Mon Sep 17 00:00:00 2001
From: TarasovEE <TarasovYY@mpei.ru>
Date: Sun, 6 Jul 2025 15:00:51 +0300
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---
 unittest.cpp | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 unittest.cpp

diff --git a/unittest.cpp b/unittest.cpp
new file mode 100644
index 0000000..6870059
--- /dev/null
+++ b/unittest.cpp
@@ -0,0 +1,48 @@
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+
+//  два разных положительных элемента
+
+TEST_CASE("distinct positive numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+
+//  Пустой вектор
+
+TEST_CASE("null vector")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+
+// одинаковые положительные элементы
+
+TEST_CASE("similar positive numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1,1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+
+//  два разных отрицательных элемента
+
+TEST_CASE("distinct negative numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({-2, -1}, min, max);
+    CHECK(min == -2);
+    CHECK(max == -1);
+}