diff --git a/doctest.h b/doctest.h
index 5c754cd..826f0f5 100644
--- a/doctest.h
+++ b/doctest.h
@@ -5724,7 +5724,7 @@ namespace {
 
                 std::tm timeInfo;
 #ifdef DOCTEST_PLATFORM_WINDOWS
-                gmtime_s(&timeInfo, &rawtime);
+//                gmtime_s(&timeInfo, &rawtime);
 #else // DOCTEST_PLATFORM_WINDOWS
                 gmtime_r(&rawtime, &timeInfo);
 #endif // DOCTEST_PLATFORM_WINDOWS
diff --git a/lab01.cbp b/lab01.cbp
index bad2e84..833fc02 100644
--- a/lab01.cbp
+++ b/lab01.cbp
@@ -41,6 +41,10 @@
 			<Option target="&lt;{~None~}&gt;" />
 		</Unit>
 		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h">
+			<Option target="&lt;{~None~}&gt;" />
+		</Unit>
 		<Unit filename="text.cpp" />
 		<Unit filename="text.h">
 			<Option target="&lt;{~None~}&gt;" />
diff --git a/main.cpp b/main.cpp
index 1ecb83b..9a5a050 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,6 +2,7 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
 
 using namespace std;
 
diff --git a/unittest.cpp b/unittest.cpp
index a9ba7e5..4022e4c 100644
--- a/unittest.cpp
+++ b/unittest.cpp
@@ -10,3 +10,36 @@ TEST_CASE("distinct positive numbers") {
     CHECK(min == 1);
     CHECK(max == 2);
 }
+
+TEST_CASE("blank vector") {
+    double min = 0;
+    double max = 0;
+    find_minmax({NULL}, min, max);
+    CHECK(min == 0);
+    CHECK(max == 0);
+}
+
+TEST_CASE("one element vector"){
+    double min = 0;
+    double max = 0;
+    find_minmax({5}, min, max);
+    CHECK(min == 5);
+    CHECK(max == 5);
+}
+
+TEST_CASE("negative elements vector"){
+    double min = 0;
+    double max = 0;
+    find_minmax({-3, -7, -24}, min, max);
+    CHECK(min == -24);
+    CHECK(max == -3);
+}
+
+TEST_CASE("same elements vector"){
+    double min = 0;
+    double max = 0;
+    find_minmax({8, 8, 8}, min, max);
+    CHECK(min == 8);
+    CHECK(max == 8);
+}
+