[C#] Provide path to SBE.dll for C# property tests in CI.

Author: ZachBray

build.gradle

@@ -311,13 +311,16 @@ project(':sbe-tool') {
                     implementation "org.json:json:${jsonVersion}"
                 }
 
+
                 targets {
                     all {
                         testTask.configure {
                             minHeapSize = '2g'
                             maxHeapSize = '2g'
 
                             javaLauncher.set(toolchainLauncher)
+
+                            systemProperty 'sbe.dll', "${rootProject.projectDir}/csharp/sbe-dll/bin/Release/netstandard2.0/SBE.dll"
                         }
                     }
                 }

sbe-tool/src/propertyTest/java/uk/co/real_logic/sbe/properties/DtosPropertyTest.java

@@ -39,6 +39,8 @@
 public class DtosPropertyTest
 {
     private static final String DOTNET_EXECUTABLE = System.getProperty("sbe.tests.dotnet.executable", "dotnet");
+    private static final String SBE_DLL =
+        System.getProperty("sbe.dll", "csharp/sbe-dll/bin/Release/netstandard2.0/SBE.dll");
     private static final String CPP_EXECUTABLE = System.getProperty("sbe.tests.cpp.executable", "g++");
     private static final boolean KEEP_DIR_ON_FAILURE = Boolean.parseBoolean(
         System.getProperty("sbe.tests.keep.dir.on.failure", "true"));
@@ -80,7 +82,9 @@ void csharpDtoEncodeShouldBeTheInverseOfDtoDecode(
             writeInputFile(encodedMessage, tempDir);
 
             execute(encodedMessage.schema(), tempDir, "test",
-                DOTNET_EXECUTABLE, "run", "--", "input.dat");
+                DOTNET_EXECUTABLE, "run",
+                "--property:SBE_DLL=" + SBE_DLL,
+                "--", "input.dat");
 
             final byte[] inputBytes = new byte[encodedMessage.length()];
             encodedMessage.buffer().getBytes(0, inputBytes);
@@ -211,12 +215,12 @@ private static void execute(
     {
         final Path stdout = tempDir.resolve(name + "_stdout.txt");
         final Path stderr = tempDir.resolve(name + "_stderr.txt");
-        final ProcessBuilder compileProcessBuilder = new ProcessBuilder(args)
+        final ProcessBuilder processBuilder = new ProcessBuilder(args)
             .directory(tempDir.toFile())
             .redirectOutput(stdout.toFile())
             .redirectError(stderr.toFile());
 
-        final Process process = compileProcessBuilder.start();
+        final Process process = processBuilder.start();
 
         if (0 != process.waitFor())
         {

sbe-tool/src/propertyTest/resources/CSharpDtosPropertyTest/SbePropertyTest.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <Reference Include="SBE">
-      <HintPath>/home/zach/src/real-logic/simple-binary-encoding/csharp/sbe-dll/bin/Release/netstandard2.0/SBE.dll</HintPath>
+      <HintPath>$(SBE_DLL)</HintPath>
     </Reference>
   </ItemGroup>