From fe40eae74cf2490582d844159e7736492536ca20 Mon Sep 17 00:00:00 2001
From: ChernyukVS <vikktoriachernyuk@gmail.com>
Date: Tue, 16 Sep 2025 17:57:51 +0000
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---
 unittest.cpp | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 unittest.cpp

diff --git a/unittest.cpp b/unittest.cpp
new file mode 100644
index 0000000..6111101
--- /dev/null
+++ b/unittest.cpp
@@ -0,0 +1,54 @@
+#include "histogram_internal.h"
+#include <vector>
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.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("distinct negative numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({-1, -2}, min, max);
+    CHECK(min == -2);
+    CHECK(max == -1);
+}
+TEST_CASE("vector 1 element")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+TEST_CASE("distinct equals numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+TEST_CASE("distinct equals numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+
+TEST_CASE("empty vector") {
+    double min = -1;
+    double max = -1;
+    find_minmax({}, min, max);
+    // Проверяем, что min и max не изменились (или изменились в ожидаемый способ)
+    CHECK(min == -1);
+    CHECK(max == -1);
+}