Add Codecov report upload (#30)

* Add codecov report script

* fix script

* Fix

* Fix

* Fix

appveyor.yml

@@ -5,13 +5,17 @@ before_build:
     cd src
 
     dotnet restore
+
+    choco install opencover.portable
+
+    choco install codecov
 build:
   project: ./src/
   verbosity: minimal
 test_script:
 - ps: >-
     cd ..\tests
 
-    cd UnitTest
+    OpenCover.Console.exe -oldstyle -register:user -target:"C:\Program Files\dotnet\dotnet.exe" -targetargs:"test" -output:".\test_coverage.xml"
 
-    dotnet test
+    codecov -f "test_coverage.xml"

tests/MineCase.Tests.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26730.10
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MineCase.UnitTest", "UnitTest\MineCase.UnitTest.csproj", "{8EA43298-B73A-4A32-9A43-59D385ADA787}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8EA43298-B73A-4A32-9A43-59D385ADA787}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8EA43298-B73A-4A32-9A43-59D385ADA787}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8EA43298-B73A-4A32-9A43-59D385ADA787}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8EA43298-B73A-4A32-9A43-59D385ADA787}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F4A5642D-56BF-4E11-AEDF-3D900DE95C69}
+	EndGlobalSection
+EndGlobal