Remove "S7" from some class names

Sharp7.Rx.Tests/ValueConverterTests/WriteToBuffer.cs

@@ -0,0 +1,53 @@
+using NUnit.Framework;
+using Shouldly;
+
+namespace Sharp7.Rx.Tests.ValueConverterTests;
+
+[TestFixture]
+internal class WriteToBuffer : ConverterTestBase
+{
+    [TestCaseSource(nameof(GetValidTestCases))]
+    [TestCaseSource(nameof(GetAdditinalWriteTestCases))]
+    public void Write(ConverterTestCase tc)
+    {
+        //Arrange
+        var buffer = new byte[tc.VariableAddress.BufferLength];
+        var write = CreateWriteMethod(tc);
+
+        //Act
+        write.Invoke(null, [buffer, tc.Value, tc.VariableAddress]);
+
+        //Assert
+        buffer.ShouldBe(tc.Data);
+    }
+
+    public static IEnumerable<ConverterTestCase> GetAdditinalWriteTestCases()
+    {
+        yield return new ConverterTestCase("aaaaBCDE", "DB0.string0.4", [0x04, 0x04, 0x61, 0x61, 0x61, 0x61]); // Length in address exceeds PLC string length
+        yield return new ConverterTestCase("aaaaBCDE", "DB0.WString0.4", [0x00, 0x04, 0x00, 0x04, 0x00, 0x61, 0x00, 0x61, 0x00, 0x61, 0x00, 0x61]); // Length in address exceeds PLC string length
+    }
+
+    [TestCase(18, "DB0.DInt12", 3)]
+    [TestCase(0.25f, "DB0.Real1", 3)]
+    [TestCase("test", "DB0.String1.10", 9)]
+    public void BufferToSmall<T>(T input, string address, int bufferSize)
+    {
+        //Arrange
+        var variableAddress = Parser.Parse(address);
+        var buffer = new byte[bufferSize];
+
+        //Act
+        Should.Throw<ArgumentException>(() => ValueConverter.WriteToBuffer(buffer, input, variableAddress));
+    }
+
+    [TestCase((char) 18, "DB0.DBB0")]
+    public void UnsupportedType<T>(T input, string address)
+    {
+        //Arrange
+        var variableAddress = Parser.Parse(address);
+        var buffer = new byte[variableAddress.BufferLength];
+
+        //Act
+        Should.Throw<UnsupportedS7TypeException>(() => ValueConverter.WriteToBuffer(buffer, input, variableAddress));
+    }
+}