Add serialization to binary format of empty WASM module

1 files changed, 31 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/testing/ProcessRunner.java b/src/test/java/org/shedlang/compiler/testing/ProcessRunner.java
new file mode 100644
index 00000000..c1bfd481
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/testing/ProcessRunner.java
@@ -0,0 +1,31 @@
+package org.shedlang.compiler.testing;
+
+import org.shedlang.compiler.backends.llvm.ExecutionResult;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ProcessRunner {
+    private ProcessRunner() {
+    }
+
+    public static ExecutionResult run(List<String> command) throws IOException, InterruptedException {
+        var process = new ProcessBuilder()
+            .command(command)
+            .start();
+
+        var exitCode = process.waitFor();
+
+        try (
+            var stdoutReader = process.inputReader(StandardCharsets.UTF_8);
+            var stderrReader = process.errorReader(StandardCharsets.UTF_8)
+        ) {
+            var stdout = stdoutReader.lines().collect(Collectors.joining());
+            var stderr = stderrReader.lines().collect(Collectors.joining());
+
+            return new ExecutionResult(exitCode, stdout, stderr);
+        }
+    }
+}