From 819f9242a971403603699e1f8a66c1909cd9d69f Mon Sep 17 00:00:00 2001
From: GneushevaYM <GneushevaYM@mpei.ru>
Date: Thu, 1 May 2025 13:24:41 +0300
Subject: [PATCH] =?UTF-8?q?code:=20=D0=BC=D0=BE=D0=B4=D1=83=D0=BB=D1=8C?=
 =?UTF-8?q?=D0=BD=D1=8B=D0=B5=20=D1=82=D0=B5=D1=81=D1=82=D1=8B?=
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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..7ea135b
--- /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"
+#include <vector>
+
+TEST_CASE("distinct positive numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+    CHECK(find_minmax({1, 2}, min, max));
+}
+
+TEST_CASE("distinct negative numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({-1, -2}, min, max);
+    CHECK(min == -2);
+    CHECK(max == -1);
+    CHECK(find_minmax({-1, -2}, min, max));
+}
+TEST_CASE("vector 1 element")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+    CHECK(find_minmax({1}, min, max));
+}
+TEST_CASE("distinct equals numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+    CHECK(find_minmax({1, 1}, min, max));
+}
+TEST_CASE("distinct empty vector")
+{
+    double min = -1;
+    double max = -1;
+    CHECK(!find_minmax({}, min, max));
+}