Add QUtil::read_file_into_memory

This code was essentially duplicated between test_driver and
standalone_fuzz_target_runner.

2 files changed, 14 insertions, 4 deletions

diff --git a/libtests/qtest/qutil/qutil.out b/libtests/qtest/qutil/qutil.out
index eb8eaf45..763654bb 100644
--- a/libtests/qtest/qutil/qutil.out
+++ b/libtests/qtest/qutil/qutil.out
@@ -91,10 +91,11 @@ file1: -qutil.out-, file2: -other-file-; same: 0: PASS
 file1: -qutil.out-, file2: --; same: 0: PASS
 file1: -qutil.out-, file2: -(null)-; same: 0: PASS
 file1: --, file2: -qutil.out-; same: 0: PASS
----- lines from file
+---- read from file
 This file is used for qutil testing.
 It has mixed newlines.
 Some lines are very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very 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+read 24652 bytes
 ---- hex encode/decode
 begin hex encode/decode
 end hex encode/decode
diff --git a/libtests/qutil.cc b/libtests/qutil.cc
index a5c44fc5..ed605a1d 100644
--- a/libtests/qutil.cc
+++ b/libtests/qutil.cc
@@ -400,7 +400,7 @@ void same_file_test()
     assert_same_file("", "qutil.out", false);
 }
 
-void read_lines_from_file_test()
+void read_from_file_test()
 {
     std::list<std::string> lines = QUtil::read_lines_from_file("other-file");
     for (std::list<std::string>::iterator iter = lines.begin();
@@ -408,6 +408,15 @@ void read_lines_from_file_test()
     {
         std::cout << *iter << std::endl;
     }
+    PointerHolder<char> buf;
+    size_t size = 0;
+    QUtil::read_file_into_memory("other-file", buf, size);
+    std::cout << "read " << size << " bytes" << std::endl;
+    char const* p = buf.getPointer();
+    assert(size == 24652);
+    assert(memcmp(p, "This file is used for qutil testing.", 36) == 0);
+    assert(p[59] == static_cast<char>(13));
+    assert(memcmp(p + 24641, "very long.", 10) == 0);
 }
 
 void assert_hex_encode(std::string const& input, std::string const& expected)
@@ -472,8 +481,8 @@ int main(int argc, char* argv[])
 	get_whoami_test();
 	std::cout << "---- file" << std::endl;
 	same_file_test();
-	std::cout << "---- lines from file" << std::endl;
-	read_lines_from_file_test();
+	std::cout << "---- read from file" << std::endl;
+	read_from_file_test();
 	std::cout << "---- hex encode/decode" << std::endl;
 	hex_encode_decode_test();
     }