From aca28f00deba672c02fdb8732f10763e198b1cfc Mon Sep 17 00:00:00 2001
From: Sam Atkins <atkinssj@serenityos.org>
Date: Thu, 10 Mar 2022 12:27:32 +0000
Subject: [PATCH] Tests: Port test-cpp-preprocessor to Core::Stream

---
 Tests/LibCpp/test-cpp-preprocessor.cpp | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/Tests/LibCpp/test-cpp-preprocessor.cpp b/Tests/LibCpp/test-cpp-preprocessor.cpp
index be2a0c3e65a..925571ff002 100644
--- a/Tests/LibCpp/test-cpp-preprocessor.cpp
+++ b/Tests/LibCpp/test-cpp-preprocessor.cpp
@@ -6,22 +6,20 @@
 
 #include <AK/LexicalPath.h>
 #include <LibCore/DirIterator.h>
-#include <LibCore/File.h>
+#include <LibCore/Stream.h>
 #include <LibCpp/Parser.h>
 #include <LibTest/TestCase.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
 
 constexpr char TESTS_ROOT_DIR[] = "/home/anon/cpp-tests/preprocessor";
 
-static String read_all(const String& path)
+static String read_all(String const& path)
 {
-    auto result = Core::File::open(path, Core::OpenMode::ReadOnly);
-    VERIFY(!result.is_error());
-    auto content = result.value()->read_all();
-    return { reinterpret_cast<const char*>(content.data()), content.size() };
+    auto file = MUST(Core::Stream::File::open(path, Core::Stream::OpenMode::Read));
+    auto file_size = MUST(file->size());
+    auto content = MUST(ByteBuffer::create_uninitialized(file_size));
+    if (!file->read_or_error(content.bytes()))
+        VERIFY_NOT_REACHED();
+    return String { content.bytes() };
 }
 
 TEST_CASE(test_regression)