solutions for FizzBuzz and Palindrome with unit tests

katas/FizzBuzz/solution/baxa68486/FizzBuzz.Unit.Tests/FizzBuzz.Unit.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="FluentAssertions" Version="6.9.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <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="..\FizzBuzz\FizzBuzz.csproj" />
+  </ItemGroup>
+
+</Project>

katas/FizzBuzz/solution/baxa68486/FizzBuzz.Unit.Tests/FizzBuzzTests.cs

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+using FluentAssertions;
+using Xunit;
+
+namespace FizzBuzz.Unit.Tests
+{
+    public class FizzBuzzTests
+    {
+        private readonly RulesEngine _rulesEngine = new RulesEngine();
+
+        [Theory]
+        [InlineData(3)]
+        public void EveluateNumbers_CheckDivisionToThreeRule_ReturnsFizz(int n)
+        {
+            var expected = new List<string> { "1", "2", "Fizz" };
+            var res = _rulesEngine.EveluateNumbers(n);
+            expected.Should().BeEquivalentTo(res);
+        }
+
+        [Theory]
+        [InlineData(5)]
+        public void EveluateNumbers_CheckDivisionToFiveRule_ReturnsBuzz(int n)
+        {
+            var expected = new List<string> { "1", "2", "Fizz", "4", "Buzz" };
+            var res = _rulesEngine.EveluateNumbers(n);
+            expected.Should().BeEquivalentTo(res);
+        }
+
+
+        [Theory]
+        [InlineData(15)]
+        public void EveluateNumbers_CheckDivisionToThreeAndFiveRule_ResultContainsFizzBuzz(int n)
+        {
+            var res = _rulesEngine.EveluateNumbers(n);
+            res.Should().Contain("FizzBuzz");
+        }
+    }
+}

katas/FizzBuzz/solution/baxa68486/FizzBuzz/FizzBuzz.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

katas/FizzBuzz/solution/baxa68486/FizzBuzz/FizzBuzz.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.33103.201
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FizzBuzz", "FizzBuzz.csproj", "{00C63E22-4318-4176-8A4B-08CBDA95B217}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FizzBuzz.Unit.Tests", "..\FizzBuzz.Unit.Tests\FizzBuzz.Unit.Tests.csproj", "{35F85DDA-9071-4E73-BE6F-1EF5B30A29EC}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{00C63E22-4318-4176-8A4B-08CBDA95B217}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{00C63E22-4318-4176-8A4B-08CBDA95B217}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{00C63E22-4318-4176-8A4B-08CBDA95B217}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{00C63E22-4318-4176-8A4B-08CBDA95B217}.Release|Any CPU.Build.0 = Release|Any CPU
+		{35F85DDA-9071-4E73-BE6F-1EF5B30A29EC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{35F85DDA-9071-4E73-BE6F-1EF5B30A29EC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{35F85DDA-9071-4E73-BE6F-1EF5B30A29EC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{35F85DDA-9071-4E73-BE6F-1EF5B30A29EC}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7F83EDA8-AF89-40E9-B20C-069085CA3916}
+	EndGlobalSection
+EndGlobal

katas/FizzBuzz/solution/baxa68486/FizzBuzz/Program.cs

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+// See https://aka.ms/new-console-template for more information
+
+Console.WriteLine("Hello, World!");

katas/FizzBuzz/solution/baxa68486/FizzBuzz/RulesEngine.cs

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+using System.Data;
+using System.Text;
+
+namespace FizzBuzz
+{
+    /*
+        It could be implemented using OOP by encapsulating rules in separate classes
+        and handling them in RulesEngine
+    */
+    public class RulesEngine
+    {
+        List<KeyValuePair<Func<int, bool>, string>> _rules =
+                                new List<KeyValuePair<Func<int, bool>, string>>
+        {
+            new KeyValuePair<Func<int, bool>, string>(x => x%3 == 0, "Fizz"),
+            new KeyValuePair<Func<int, bool>, string>(x => x%5 == 0, "Buzz"),
+        };
+
+        public List<string> EveluateNumbers(int n)
+        {
+            List<string> ls = new List<string>();
+            var res = new StringBuilder();
+
+            for (int i = 1; i <= n; i++)
+            {
+                foreach (var rule in _rules)
+                {
+                    if (rule.Key(i))
+                    {
+                        res.Append(rule.Value);
+                    }
+                }
+                if (res.Length == 0)
+                    ls.Add(i.ToString());
+                else
+                    ls.Add(res.ToString());
+
+                res.Clear();
+            }
+            return ls;
+        }
+    }
+}

katas/FizzBuzz/solution/baxa68486/index.html

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+

katas/Palindrom/Palindrom.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/solution/baxa68486/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library name="JUnit4">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.13.1/junit-4.13.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library name="JUnit5.8.1">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.8.1/junit-jupiter-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.8.1/junit-jupiter-api-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.8.1/junit-platform-commons-1.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.8.1/junit-jupiter-params-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.8.1/junit-jupiter-engine-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.8.1/junit-platform-engine-1.8.1.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>

katas/Palindrom/Palindrome.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library name="JUnit4">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.13.1/junit-4.13.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library name="JUnit4">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.13.1/junit-4.13.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library name="JUnit5.8.1">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.8.1/junit-jupiter-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.8.1/junit-jupiter-api-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.8.1/junit-platform-commons-1.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.8.1/junit-jupiter-params-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.8.1/junit-jupiter-engine-5.8.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.8.1/junit-platform-engine-1.8.1.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>

katas/Palindrom/solution/baxa68486/index.html

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+

katas/Palindrom/solution/baxa68486/src/main/Main.java

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+package main;
+
+public class Main {
+    public static void main(String[] args) {
+        var res = new Palindrome().isPalindrome("amma");
+        System.out.println(res);
+        System.out.println("Hello world!");
+    }
+}

katas/Palindrom/solution/baxa68486/src/main/Palindrome.java

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+package main;
+
+public class Palindrome {
+
+    public boolean isPalindrome(String s) {
+        if(s == null)
+            return false;
+        int start = 0;
+        int end = (s.length() - 1);
+        while ((start < end)) {
+
+            char first = s.charAt(start);
+            char second = s.charAt(end);
+            if(!Character.isLetterOrDigit(first)){
+                start++;
+                continue;
+            }
+
+            if(!Character.isLetterOrDigit(second)) {
+                end--;
+                continue;
+            }
+
+            if (Character.toLowerCase(first) != Character.toLowerCase(second)) {
+                return false;
+            }
+
+            start++;
+            end--;
+        }
+
+        return true;
+    }
+}

katas/Palindrom/solution/baxa68486/src/test/PalindromeTests.java

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+package test;
+
+import main.Palindrome;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import java.util.stream.Stream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class PalindromeTests {
+    @ParameterizedTest(name = "{index} => s=''{0}'', expected={1}")
+    @MethodSource("testData")
+    void isPalindrome(String s, boolean expected)
+    {
+        var palindrome = new Palindrome();
+        var res = palindrome.isPalindrome(s);
+        assertEquals(expected, res);
+    }
+
+
+    private static Stream<Arguments> testData() {
+        return Stream.of(
+                Arguments.of("amma", true),
+                Arguments.of("A man, a plan, a canal: Panama", true),
+                Arguments.of("race a car", false),
+                Arguments.of("street", false),
+                Arguments.of(" ", true),
+                Arguments.of("Tarne nie deinen Rat!", true)
+        );
+    }
+
+    @Test
+    void isPalindrome_StringIsNull_ReturnFalse()
+    {
+        var palindrome = new Palindrome();
+        String s = null;
+        var res = palindrome.isPalindrome(s);
+        assertEquals(false, res);
+    }
+}