Allow use of self.filecheck in LLDB tests (c.f self.expect)

Add a "filecheck" method to the LLDB test base. This allows test authors
to pattern match command output using FileCheck, making it possible to
write stricter tests than what `self.expect` allows.

For context (motivation, examples of stricter checking, etc), see the
lldb-dev thread: "Using FileCheck in lldb inline tests".

Differential Revision: https://reviews.llvm.org/D50751

llvm-svn: 342508

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/configuration.py b/lldb/packages/Python/lldbsuite/test/configuration.py
index a1a0ced4b4f..f92b898ecc9 100644
--- a/lldb/packages/Python/lldbsuite/test/configuration.py
+++ b/lldb/packages/Python/lldbsuite/test/configuration.py
@@ -46,6 +46,9 @@ count = 1
 arch = None        # Must be initialized after option parsing
 compiler = None    # Must be initialized after option parsing
 
+# Path to the FileCheck testing tool. Not optional.
+filecheck = None
+
 # The arch might dictate some specific CFLAGS to be passed to the toolchain to build
 # the inferior programs.  The global variable cflags_extras provides a hook to do
 # just that.
@@ -179,3 +182,11 @@ def get_absolute_path_to_root_test_dir():
         return test_subdir
 
     return os.path.dirname(os.path.realpath(__file__))
+
+
+def get_filecheck_path():
+    """
+    Get the path to the FileCheck testing tool.
+    """
+    assert os.path.lexists(filecheck)
+    return filecheck