build: unittest + doctest.h

doctest.h

@@ -0,0 +1 @@
+#pragma once

labor01.cpp

@@ -1,6 +1,7 @@
 #include <iostream>
 #include <vector>
 #include "histogram.h"
+#include <algorithm>
 #include "text.h"
 
 

text.h

@@ -1,9 +1,9 @@
-#ifndef HISTOGRAM_H_INCLUDED
-#define HISTOGRAM_H_INCLUDED
+#ifndef TEXT_H_INCLUDED
+#define TEXT_H_INCLUDED
 
 #include <vector>
 
 void
 show_histogram_text(const std::vector<size_t>& bins, size_t& bin_count);
 
-#endif // HISTOGRAM_H_INCLUDED
+#endif // TEXT_H_INCLUDED

unittest.sln

@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.7.34024.191
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "unittest", "unittest.vcxproj", "{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Debug|x64.ActiveCfg = Debug|x64
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Debug|x64.Build.0 = Debug|x64
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Debug|x86.ActiveCfg = Debug|Win32
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Debug|x86.Build.0 = Debug|Win32
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Release|x64.ActiveCfg = Release|x64
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Release|x64.Build.0 = Release|x64
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Release|x86.ActiveCfg = Release|Win32
+		{9AD59A50-DBD4-43A6-9E29-FCE8AB4DCC54}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2857DA35-CE5A-4DD1-B21E-73E914A1C99B}
+	EndGlobalSection
+EndGlobal