Add support for unittest inputs.
Occasionally it is useful to have unittest which take inputs.
While we normally try to have this test be more of a lit test
we occasionally don't have tools that can exercise the code
in the right way to test certain things. LLDB has been using
this style of unit test for a while, particularly with regards
to how it tests core dump and minidump file parsing. Recently
i needed this as well for the case where we want to test that
some of the PDB reading code works correctly. It needs to
exercise the code in a way that is not covered by any dumper
and would be impractical to implement in one of the dumpers,
but requires a valid PDB file. Since this is now needed by
more than one project, it makes sense to have this be a
generally supported thing that unit tests can do, and we just
encourage people to use this sparingly.
Differential Revision: https://reviews.llvm.org/D51561
llvm-svn: 341502
diff --git a/llvm/lib/Testing/Support/CMakeLists.txt b/llvm/lib/Testing/Support/CMakeLists.txt
index 969875e..c10a810 100644
--- a/llvm/lib/Testing/Support/CMakeLists.txt
+++ b/llvm/lib/Testing/Support/CMakeLists.txt
@@ -3,6 +3,7 @@
add_llvm_library(LLVMTestingSupport
Error.cpp
+ SupportHelpers.cpp
BUILDTREE_ONLY
diff --git a/llvm/lib/Testing/Support/SupportHelpers.cpp b/llvm/lib/Testing/Support/SupportHelpers.cpp
new file mode 100644
index 0000000..c266979
--- /dev/null
+++ b/llvm/lib/Testing/Support/SupportHelpers.cpp
@@ -0,0 +1,36 @@
+
+#include "llvm/Testing/Support/SupportHelpers.h"
+
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
+
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace llvm::unittest;
+
+extern const char *TestMainArgv0;
+
+SmallString<128> llvm::unittest::getInputFileDirectory() {
+ llvm::SmallString<128> Result = llvm::sys::path::parent_path(TestMainArgv0);
+ llvm::sys::fs::make_absolute(Result);
+ llvm::sys::path::append(Result, "llvm.srcdir.txt");
+
+ EXPECT_TRUE(llvm::sys::fs::is_directory(Result))
+ << "Unit test source directory file does not exist.";
+
+ auto File = MemoryBuffer::getFile(Result);
+
+ EXPECT_TRUE(static_cast<bool>(File))
+ << "Could not open unit test source directory file.";
+
+ Result.clear();
+ Result.append((*File)->getBuffer().trim());
+ llvm::sys::path::append(Result, "Inputs");
+ llvm::sys::path::native(Result);
+ return std::move(Result);
+}