Type check binary expressions

tools/tester.js

@@ -32,11 +32,13 @@ async function compileTest (parsedPath) {
   })
 }
 
-function checkFailure (parsedPath, buildResult) {
+async function checkFailure (parsedPath, buildResult) {
+  const failureFile = path.resolve('./tests/failures', `${parsedPath.name}.txt`)
+
+  await fs.access(failureFile)
   const diffArguments = [
     '-u', '--color=always',
-    path.resolve('./tests/failures', `${parsedPath.name}.txt`),
-    '-'
+    failureFile, '-'
   ]
 
   try {
@@ -97,16 +99,22 @@ async function runVM(cpioImage) {
 
 async function runInDirectory (directoryPath) {
   let failed = 0
+  const sources = await glob(path.join(directoryPath, '*.eln'))
 
-  for (const testEntry of await glob(path.join(directoryPath, '*.eln'))) {
+  for (const testEntry of sources) {
     const parsedPath = path.parse(testEntry)
 
     console.log(`Compiling ${parsedPath.base}.`)
     const buildResult = await compileTest(parsedPath)
 
     if (buildResult.code !== 0) {
-      if (!(await checkFailure(parsedPath, buildResult))) {
+      try {
+        if (!(await checkFailure(parsedPath, buildResult))) {
+          ++failed
+        }
+      } catch (e) {
         ++failed
+        console.log(buildResult.output)
       }
       continue
     }
@@ -119,7 +127,7 @@ async function runInDirectory (directoryPath) {
   await runVM(cpioImage)
 
   return {
-    total: (await glob(path.join(directoryPath, 'failures/*'))).length,
+    total: sources.length,
     failed,
 
     passed () {