Add ProcessArgs and tests

StabilityMatrix.Core/Processes/ProcessArgs.cs

@@ -0,0 +1,29 @@
+using System.Text.RegularExpressions;
+using OneOf;
+
+namespace StabilityMatrix.Core.Processes;
+
+public partial class ProcessArgs : OneOfBase<string, string[]>
+{
+    /// <inheritdoc />
+    private ProcessArgs(OneOf<string, string[]> input)
+        : base(input) { }
+
+    // Implicit conversions
+
+    public static implicit operator ProcessArgs(string input) => new(input);
+
+    public static implicit operator ProcessArgs(string[] input) => new(input);
+
+    public static implicit operator string(ProcessArgs input) =>
+        input.Match(str => str, arr => string.Join(' ', arr.Select(ProcessRunner.Quote)));
+
+    public static implicit operator string[](ProcessArgs input) =>
+        input.Match(
+            str => ArgumentsRegex().Matches(str).Select(x => x.Value.Trim('"')).ToArray(),
+            arr => arr
+        );
+
+    [GeneratedRegex("""[\"].+?[\"]|[^ ]+""", RegexOptions.IgnoreCase)]
+    private static partial Regex ArgumentsRegex();
+}

StabilityMatrix.Tests/Models/ProcessArgsTests.cs

@@ -0,0 +1,43 @@
+using StabilityMatrix.Core.Processes;
+
+namespace StabilityMatrix.Tests.Models;
+
+[TestClass]
+public class ProcessArgsTests
+{
+    [DataTestMethod]
+    [DataRow("pip", new[] { "pip" })]
+    [DataRow("pip install torch", new[] { "pip", "install", "torch" })]
+    [DataRow(
+        "pip install -r \"file spaces/here\"",
+        new[] { "pip", "install", "-r", "file spaces/here" }
+    )]
+    [DataRow(
+        "pip install -r \"file spaces\\here\"",
+        new[] { "pip", "install", "-r", "file spaces\\here" }
+    )]
+    public void TestStringToArray(string input, string[] expected)
+    {
+        ProcessArgs args = input;
+        string[] result = args;
+        CollectionAssert.AreEqual(expected, result);
+    }
+
+    [DataTestMethod]
+    [DataRow(new[] { "pip" }, "pip")]
+    [DataRow(new[] { "pip", "install", "torch" }, "pip install torch")]
+    [DataRow(
+        new[] { "pip", "install", "-r", "file spaces/here" },
+        "pip install -r \"file spaces/here\""
+    )]
+    [DataRow(
+        new[] { "pip", "install", "-r", "file spaces\\here" },
+        "pip install -r \"file spaces\\here\""
+    )]
+    public void TestArrayToString(string[] input, string expected)
+    {
+        ProcessArgs args = input;
+        string result = args;
+        Assert.AreEqual(expected, result);
+    }
+}