Split code from SabreTools

SabreTools.CommandLine.Test/Inputs/StringInputTests.cs

@@ -0,0 +1,107 @@
+using SabreTools.CommandLine.Inputs;
+using Xunit;
+
+namespace SabreTools.CommandLine.Test.Inputs
+{
+    public class StringInputTests
+    {
+        [Fact]
+        public void ProcessInput_EmptyArgs_Failure()
+        {
+            string[] args = [];
+            int index = 0;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.False(actual);
+            Assert.Equal(0, index);
+            Assert.Null(input.Value);
+        }
+
+        [Fact]
+        public void ProcessInput_NegativeIndex_Failure()
+        {
+            string[] args = ["a", "value"];
+            int index = -1;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.False(actual);
+            Assert.Equal(-1, index);
+            Assert.Null(input.Value);
+        }
+
+        [Fact]
+        public void ProcessInput_OverIndex_Failure()
+        {
+            string[] args = ["a", "value"];
+            int index = 2;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.False(actual);
+            Assert.Equal(2, index);
+            Assert.Null(input.Value);
+        }
+
+        [Fact]
+        public void ProcessInput_Space_InvalidLength_Failure()
+        {
+            string[] args = ["a"];
+            int index = 0;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.False(actual);
+            Assert.Equal(0, index);
+            Assert.Null(input.Value);
+        }
+
+        [Fact]
+        public void ProcessInput_Space_ValidValue_Success()
+        {
+            string[] args = ["a", "value"];
+            int index = 0;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.True(actual);
+            Assert.Equal(1, index);
+            Assert.Equal("value", input.Value);
+        }
+
+        [Fact]
+        public void ProcessInput_Equal_Empty_Success()
+        {
+            string[] args = ["a="];
+            int index = 0;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.True(actual);
+            Assert.Equal(0, index);
+            Assert.NotNull(input.Value);
+            Assert.Empty(input.Value);
+        }
+
+        [Fact]
+        public void ProcessInput_Equal_ValidValue_Success()
+        {
+            string[] args = ["a=value"];
+            int index = 0;
+
+            var input = new StringInput("a", "a", "a");
+            bool actual = input.ProcessInput(args, ref index);
+
+            Assert.True(actual);
+            Assert.Equal(0, index);
+            Assert.Equal("value", input.Value);
+        }
+    }
+}