Add ExecFunction.GetProcessStartInfo methods. (#26)

These methods enable obtaining the ProcessStartInfo so it can be passed to start a Process at a later time.
tmds · Jan 31, 2024 · 8a2f30e · 8a2f30e
1 parent 31396f0
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diff --git a/src/Tmds.ExecFunction/ExecFunction.cs b/src/Tmds.ExecFunction/ExecFunction.cs
@@ -88,6 +88,37 @@ public static Task RunAsync(Func<Task<int>> action, Action<ExecFunctionOptions>
         public static Task RunAsync(Func<string[], Task<int>> action, string[] args, Action<ExecFunctionOptions> configure = null)
             => Start(GetMethodInfo(action), args ?? throw new ArgumentNullException(nameof(args)), configure, returnTask: true).exitedTask;
 
+        public static ProcessStartInfo GetProcessStartInfo(Action action)
+            => GetProcessStartInfo(GetMethodInfo(action), Array.Empty<string>());
+
+        public static ProcessStartInfo GetProcessStartInfo(Action<string[]> action, string[] args)
+            => GetProcessStartInfo(GetMethodInfo(action), args ?? throw new ArgumentNullException(nameof(args)));
+
+        public static ProcessStartInfo GetProcessStartInfo(Func<int> action)
+            => GetProcessStartInfo(GetMethodInfo(action), Array.Empty<string>());
+
+        public static ProcessStartInfo GetProcessStartInfo(Func<string[], int> action, string[] args)
+            => GetProcessStartInfo(GetMethodInfo(action), args ?? throw new ArgumentNullException(nameof(args)));
+
+        public static ProcessStartInfo GetProcessStartInfo(Func<Task> action)
+            => GetProcessStartInfo(GetMethodInfo(action), Array.Empty<string>());
+
+        public static ProcessStartInfo GetProcessStartInfo(Func<string[], Task> action, string[] args)
+            => GetProcessStartInfo(GetMethodInfo(action), args ?? throw new ArgumentNullException(nameof(args)));
+
+        public static ProcessStartInfo GetProcessStartInfo(Func<Task<int>> action)
+            => GetProcessStartInfo(GetMethodInfo(action), Array.Empty<string>());
+
+        public static ProcessStartInfo GetProcessStartInfo(Func<string[], Task<int>> action, string[] args)
+            => GetProcessStartInfo(GetMethodInfo(action), args ?? throw new ArgumentNullException(nameof(args)));
+
+        private static ProcessStartInfo GetProcessStartInfo(MethodInfo method, string[] args)
+        {
+            var psi = new ProcessStartInfo();
+            ConfigureProcessStartInfoForMethodInvocation(method, args, psi);
+            return psi;
+        }
+
         private static (Process process, Task exitedTask) Start(MethodInfo method, string[] args, Action<ExecFunctionOptions> configure, bool waitForExit = false, bool returnTask = false)
         {
             Process process = null;

diff --git a/test/Tmds.ExecFunction.Tests/UnitTest1.cs b/test/Tmds.ExecFunction.Tests/UnitTest1.cs
@@ -49,6 +49,15 @@ public void TestArgVoidReturnTaskOfInt()
             };
         }
 
+        [Fact]
+        public void GetProcessStartInfo()
+        {
+            ProcessStartInfo psi = ExecFunction.GetProcessStartInfo(() => 42);
+            Process process = Process.Start(psi);
+            process.WaitForExit();
+            Assert.Equal(42, process.ExitCode);
+        }
+
         [Theory]
         [InlineData(true)]
         [InlineData(false)]