Implementing options with a file #10

Src/CSharpier.Tests/ConfigurationOptionsTests.cs

@@ -0,0 +1,220 @@
+using System.IO.Abstractions.TestingHelpers;
+using FluentAssertions;
+using NUnit.Framework;
+
+namespace CSharpier.Tests
+{
+    [TestFixture]
+    public class ConfigurationOptionsTests
+    {
+        private MockFileSystem fileSystem;
+
+        [SetUp]
+        public void SetUp()
+        {
+            this.fileSystem = new MockFileSystem();
+        }
+
+        [Test]
+        public void Should_Return_Default_Options_With_Empty_Json()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "{}");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            ShouldHaveDefaultOptions(result);
+        }
+
+        [Test]
+        public void Should_Return_Default_Options_With_No_File()
+        {
+            var result = CreateConfigurationOptions("c:/test");
+
+            ShouldHaveDefaultOptions(result);
+        }
+
+        [Test]
+        public void Should_Return_Json_Extension_Options()
+        {
+            WhenThereExists(
+                "c:/test/.csharpierrc.json",
+                "{ \"printWidth\": 10 }"
+            );
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.PrintWidth.Should().Be(10);
+        }
+
+        [TestCase("yaml")]
+        [TestCase("yml")]
+        public void Should_Return_Yaml_Extension_Options(string extension)
+        {
+            WhenThereExists(
+                $"c:/test/.csharpierrc.{extension}",
+                "printWidth: 10"
+            );
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.PrintWidth.Should().Be(10);
+        }
+
+        [TestCase("{ \"printWidth\": 10 }")]
+        [TestCase("printWidth: 10")]
+        public void Should_Read_ExtensionLess_File(string contents)
+        {
+            WhenThereExists($"c:/test/.csharpierrc", contents);
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.PrintWidth.Should().Be(10);
+        }
+
+        [Test]
+        public void Should_Prefer_No_Extension()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "{ \"printWidth\": 1 }");
+
+            WhenThereExists(
+                "c:/test/.csharpierrc.json",
+                "{ \"printWidth\": 2 }"
+            );
+            WhenThereExists("c:/test/.csharpierrc.yaml", "printWidth: 3");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.PrintWidth.Should().Be(1);
+        }
+
+        [Test]
+        public void Should_Return_PrintWidth_With_Json()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "{ \"printWidth\": 10 }");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.PrintWidth.Should().Be(10);
+        }
+
+        [Test]
+        public void Should_Return_TabWidth_With_Json()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "{ \"tabWidth\": 10 }");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.TabWidth.Should().Be(10);
+        }
+
+        [Test]
+        public void Should_Return_UseTabs_With_Json()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "{ \"useTabs\": true }");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.UseTabs.Should().BeTrue();
+        }
+
+        [Test]
+        public void Should_Return_Exclude_With_Json()
+        {
+            WhenThereExists(
+                "c:/test/.csharpierrc",
+                "{ \"exclude\": [\"src\\\\ignoreFile.cs\"] }"
+            );
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.Exclude.Should().Contain("src/ignoreFile.cs");
+        }
+
+        [Test]
+        public void Should_Return_EndOfLine_With_Json()
+        {
+            WhenThereExists(
+                "c:/test/.csharpierrc",
+                "{ \"endOfLine\": \"crlf\" }"
+            );
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.EndOfLine.Should().Be("crlf");
+        }
+
+        [Test]
+        public void Should_Return_PrintWidth_With_Yaml()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "printWidth: 10");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.PrintWidth.Should().Be(10);
+        }
+
+        [Test]
+        public void Should_Return_TabWidth_With_Yaml()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "tabWidth: 10");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.TabWidth.Should().Be(10);
+        }
+
+        [Test]
+        public void Should_Return_UseTabs_With_Yaml()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "useTabs: true");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.UseTabs.Should().BeTrue();
+        }
+
+        [Test]
+        public void Should_Return_Exclude_With_Yaml()
+        {
+            WhenThereExists(
+                "c:/test/.csharpierrc",
+                "exclude:\n  - src\\ignoreFile.cs"
+            );
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.Exclude.Should().Contain("src/ignoreFile.cs");
+        }
+
+        [Test]
+        public void Should_Return_EndOfLine_With_Yaml()
+        {
+            WhenThereExists("c:/test/.csharpierrc", "endOfLine: crlf");
+
+            var result = CreateConfigurationOptions("c:/test");
+
+            result.EndOfLine.Should().Be("crlf");
+        }
+
+        private void ShouldHaveDefaultOptions(
+            ConfigurationOptions configurationOptions
+        ) {
+            configurationOptions.Exclude.Should().BeEmpty();
+            configurationOptions.PrintWidth.Should().Be(100);
+            configurationOptions.TabWidth.Should().Be(4);
+            configurationOptions.UseTabs.Should().BeFalse();
+            configurationOptions.EndOfLine.Should().Be("lf");
+        }
+
+        private ConfigurationOptions CreateConfigurationOptions(
+            string rootPath
+        ) {
+            return ConfigurationOptions.Create(rootPath, fileSystem);
+        }
+
+        private void WhenThereExists(string path, string contents)
+        {
+            this.fileSystem.AddFile(path, new MockFileData(contents));
+        }
+    }
+}

Src/CSharpier.Tests/DocPrinterTests.cs

@@ -460,7 +460,16 @@ public void Scratch()
 
         private static string Print(Doc doc, int width = 80)
         {
-            return DocPrinter.Print(doc, new Options { Width = width })
+            return DocPrinter.Print(
+                    doc,
+                    // TODO if we could use auto now, this wouldn't be needed
+                    // or maybe all the tests get converted to lf
+                    new Options
+                    {
+                        Width = width,
+                        EndOfLine = "\r\n"
+                    }
+                )
                 .TrimEnd('\r', '\n');
         }
     }

Src/CSharpier.Tests/TestFiles/BaseTest.cs

@@ -37,7 +37,7 @@ protected void RunTest(string folderName, string fileName)
             var formatter = new CodeFormatter();
             var result = formatter.Format(
                 fileReaderResult.FileContents,
-                new Options()
+                new Options() { Width = 80, EndOfLine = "\r\n" }
             );
 
             var actualFilePath = filePath.Replace(".cst", ".actual.cst");

Src/CSharpier/CSharpier.csproj

@@ -18,8 +18,11 @@
       <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.8.0" />
       <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
 	  <PackageReference Include="System.CommandLine" Version="2.0.0-beta1.20574.7" />
+	  <PackageReference Include="System.IO.Abstractions" Version="13.2.29" />
+	  <PackageReference Include="System.IO.Abstractions.TestingHelpers" Version="13.2.29" />
 	  <PackageReference Include="System.Text.Encoding.CodePages" Version="5.0.0" />
 	  <PackageReference Include="UTF.Unknown" Version="2.3.0" />
+	  <PackageReference Include="YamlDotNet" Version="11.1.1" />
     </ItemGroup>
 
     <ItemGroup>

Src/CSharpier/CommandLineFormatter.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Diagnostics;
 using System.IO;
+using System.IO.Abstractions;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -22,6 +23,7 @@ public class CommandLineFormatter
         protected readonly Stopwatch Stopwatch;
 
         protected readonly ConfigurationOptions ConfigurationOptions;
+        protected readonly Options Options;
 
         private CommandLineFormatter(
             string rootPath,
@@ -30,7 +32,24 @@ public class CommandLineFormatter
             bool skipWrite
         ) {
             this.RootPath = rootPath;
-            this.ConfigurationOptions = ConfigurationOptions.Create(rootPath);
+            this.ConfigurationOptions = ConfigurationOptions.Create(
+                rootPath,
+                new FileSystem()
+            );
+            this.Options = new Options
+            {
+                TabWidth = this.ConfigurationOptions.TabWidth,
+                UseTabs = this.ConfigurationOptions.UseTabs,
+                Width = this.ConfigurationOptions.PrintWidth,
+                EndOfLine = this.ConfigurationOptions.EndOfLine == "lf"
+                    ? "\n"
+                    : this.ConfigurationOptions.EndOfLine == "crlf"
+                            ? "\r\n"
+                            : throw new Exception(
+                                    "Unhandled value from EndOfLine options " +
+                                    this.ConfigurationOptions.EndOfLine
+                                )
+            };
             this.Check = check;
             this.Validate = !fast;
             this.SkipWrite = skipWrite;
@@ -132,7 +151,7 @@ CancellationToken cancellationToken
             {
                 result = await new CodeFormatter().FormatAsync(
                     fileReaderResult.FileContents,
-                    new Options(),
+                    this.Options,
                     cancellationToken
                 );
             }