first commit

.idea/.idea.Lib/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Rider ignored files
+/modules.xml
+/contentModel.xml
+/projectSettingsUpdater.xml
+/.idea.Lib.iml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/.idea.Lib/.idea/.name

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+Lib

.idea/.idea.Lib/.idea/encodings.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with BOM under Windows, with no BOM otherwise" />
+</project>

.idea/.idea.Lib/.idea/indexLayout.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>

.idea/.idea.Lib/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

Lib.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lib", "Lib\Lib.csproj", "{72A12F38-0C47-4F65-9B6F-11AAD2908CB0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LibTests", "LibTests\LibTests.csproj", "{B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{72A12F38-0C47-4F65-9B6F-11AAD2908CB0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{72A12F38-0C47-4F65-9B6F-11AAD2908CB0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{72A12F38-0C47-4F65-9B6F-11AAD2908CB0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{72A12F38-0C47-4F65-9B6F-11AAD2908CB0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

Lib.sln.DotSettings.user

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+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=9846f08a_002D7125_002D4731_002D99ac_002Df787d0cd7e3b/@EntryIndexedValue">&lt;SessionState ContinuousTestingMode="0" Name="All tests from Solution" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session"&gt;&#xD;
+  &lt;Solution /&gt;&#xD;
+&lt;/SessionState&gt;</s:String>
+	<s:String x:Key="/Default/Environment/UnitTesting/UnitTestSessionStore/Sessions/=c058ce2f_002D8bca_002D4f63_002Da2f4_002D0c7926478949/@EntryIndexedValue">&lt;SessionState ContinuousTestingMode="0" IsActive="True" Name="UnitTest1" xmlns="urn:schemas-jetbrains-com:jetbrains-ut-session"&gt;&#xD;
+  &lt;TestAncestor&gt;&#xD;
+    &lt;TestId&gt;xUnit::B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75::net7.0::LibTests.LibraryTesting.GetPeriods_TimeFrom8To18With40MinutesConsultationTime_ShouldReturn7Periods&lt;/TestId&gt;&#xD;
+    &lt;TestId&gt;xUnit::B7A85FFE-CEE5-4E0F-B10F-1FD6B7761D75::net7.0::LibTests.LibraryTesting.GetAvailablePeriods_NoBusyRanges_ShouldReturnAllWorkingTimePeriods&lt;/TestId&gt;&#xD;
+  &lt;/TestAncestor&gt;&#xD;
+&lt;/SessionState&gt;</s:String></wpf:ResourceDictionary>

LibTests/LibTests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net7.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+
+        <IsPackable>false</IsPackable>
+        <IsTestProject>true</IsTestProject>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+        <PackageReference Include="xunit" Version="2.4.2" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
+        <PackageReference Include="coverlet.collector" Version="3.1.2">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Lib\Lib.csproj" />
+    </ItemGroup>
+
+</Project>

LibTests/UnitTest1.cs

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+using Lib;
+
+namespace LibTests
+{
+    
+    public class LibraryTesting
+    {
+        [Fact]
+        public void GetPeriods_TimeFrom_Return7And21And2Periods()
+        {
+            TimeSpan[] startTimes = { TimeSpan.FromHours(9), TimeSpan.FromHours(10.5), TimeSpan.FromHours(12), new TimeSpan(15, 30, 0), new TimeSpan(17, 0, 0) };
+            int[] durations = { 60, 60, 20, 10, 30 };
+            var test = Calculations.AvailablePeriods(startTimes, durations, TimeSpan.FromHours(8), TimeSpan.FromHours(18), 40);
+            Assert.Equal(7, test.Length);
+
+            TimeSpan[] startTimes2 = { TimeSpan.FromHours(10), TimeSpan.FromHours(11), TimeSpan.FromHours(15), new TimeSpan(15, 30, 0), new TimeSpan(16, 50, 0) };
+            int[] durations2 = { 60, 30, 10, 10, 40 };
+            var test2 = Calculations.AvailablePeriods(startTimes2, durations2, TimeSpan.FromHours(8), TimeSpan.FromHours(18), 20);
+            Assert.Equal(21, test2.Length);
+
+            TimeSpan[] startTimes3 = { TimeSpan.FromHours(8), TimeSpan.FromHours(10), TimeSpan.FromHours(12), new TimeSpan(13, 30, 0), TimeSpan.FromHours(14),
+                new TimeSpan(16, 50, 0), new TimeSpan(17, 20, 0) };
+            int[] durations3 = { 60, 25, 15, 50, 40, 15, 30 };
+            var test3 = Calculations.AvailablePeriods(startTimes3, durations3, TimeSpan.FromHours(8), TimeSpan.FromHours(18), 90);
+            Assert.Equal(2, test3.Length);
+        }
+        
+        [Fact]
+        public void GetAvailablePeriods_NoBusyRanges_Return0Periods()
+        {
+            TimeSpan[] startTimes = { TimeSpan.FromHours(8) };
+            int[] durations = { 60 };
+
+            var test = Calculations.AvailablePeriods(startTimes, durations, TimeSpan.FromHours(8), TimeSpan.FromHours(9.5), 90);
+
+            Assert.Empty(test);
+        }
+        
+    }
+}

LibTests/Usings.cs

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+global using Xunit;

LibTests/bin/Debug/net7.0/Lib.deps.json

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+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v7.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v7.0": {
+      "Lib/1.0.0": {
+        "runtime": {
+          "Lib.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "Lib/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

LibTests/bin/Debug/net7.0/Lib.runtimeconfig.json

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+{
+  "runtimeOptions": {
+    "tfm": "net7.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "7.0.0"
+    }
+  }
+}

LibTests/bin/Debug/net7.0/LibTests.runtimeconfig.json

@@ -0,0 +1,9 @@
+{
+  "runtimeOptions": {
+    "tfm": "net7.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "7.0.0"
+    }
+  }
+}