Specify output for compilerException

src/BaseCompiler.php

@@ -25,7 +25,9 @@ abstract class BaseCompiler implements Responsable
         exec($this->command($document), $output, $returnVar);
         $this->refreshFile();
 
-        throw_unless($this->file->isFile(), CompilerException::class, 'Compilation failed.');
+        if (!$this->file->isFile()) {
+            throw (new CompilerException('Compilation failed.'))->setOutput($output);
+        }
 
         return $this;
     }

src/CompilerException.php

@@ -6,4 +6,12 @@ use Exception;
 
 class CompilerException extends Exception
 {
+    public string $output;
+
+    public function setOutput(array $output): self
+    {
+        $this->output = implode("\n", $output);
+
+        return $this;
+    }
 }

src/Document.php

@@ -2,6 +2,8 @@
 
 namespace Zoomyboy\Tex;
 
+use PHPUnit\Framework\Assert;
+
 abstract class Document
 {
     abstract public function basename(): string;
@@ -19,6 +21,15 @@ abstract class Document
             ->render();
     }
 
+    public function assertHasContent(string $content): void
+    {
+        Assert::assertStringContainsString(
+            $content,
+            $this->renderBody(),
+            "Failed asserting that Content contains {$content}"
+        );
+    }
+
     public function hasContent(string $content): bool
     {
         return str_contains($this->renderBody(), $content);