diff --git a/unittest.cbp b/unittest.cbp
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diff --git a/unittest.cpp b/unittest.cpp
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+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+#include "histogram.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("null vector") {
+ double min = 0;
+ double max = 0;
+ find_minmax({}, min, max);
+ CHECK(min == 0);
+ CHECK(max == 0);
+}
+
+TEST_CASE("negative elements vector") {
+ double min = 0;
+ double max = 0;
+ find_minmax({-1,-3,-5}, min, max);
+ CHECK(min == -5);
+ CHECK(max == -1);
+}
+
+
+TEST_CASE("identical elements vector") {
+ double min = 0;
+ double max = 0;
+ find_minmax({8, 8, 8}, min, max);
+ CHECK(min == 8);
+ CHECK(max == 8);
+}
+/*TEST_CASE("null vector") {
+ size_t bin_count = 0;
+ vector bins (bin_count);
+}*/