[test] Fail gracefully if the regex doesn't match

This test is failing on the Fedora bot (staging). Rather than failing
with an IndexError, we should trigger an assert and dump the log when
the regex doesn't match.

llvm-svn: 372052

1 files changed, 11 insertions, 6 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/api/log/TestAPILog.py b/lldb/packages/Python/lldbsuite/test/api/log/TestAPILog.py
index bc42c5e3985..f6fccad8d2c 100644
--- a/lldb/packages/Python/lldbsuite/test/api/log/TestAPILog.py
+++ b/lldb/packages/Python/lldbsuite/test/api/log/TestAPILog.py
@@ -34,15 +34,20 @@ class APILogTestCase(TestBase):
         with open(logfile, 'r') as f:
             log = f.read()
 
-        # Find the debugger addr.
+        # Find the SBDebugger's address.
         debugger_addr = re.findall(
             r"lldb::SBDebugger::GetScriptingLanguage\(const char \*\) \(0x([0-9a-fA-F]+),",
-            log)[0]
+            log)
 
-        get_scripting_language = 'lldb::SBDebugger::GetScriptingLanguage(const char *) (0x{}, "")'.format(
-            debugger_addr)
-        create_target = 'lldb::SBDebugger::CreateTarget(const char *) (0x{}, "")'.format(
-            debugger_addr)
+        # Make sure we've found a match.
+        self.assertTrue(debugger_addr, log)
 
+        # Make sure the GetScriptingLanguage matches.
+        get_scripting_language = 'lldb::SBDebugger::GetScriptingLanguage(const char *) (0x{}, "")'.format(
+            debugger_addr[0])
         self.assertTrue(get_scripting_language in log, log)
+
+        # Make sure the address matches.
+        create_target = 'lldb::SBDebugger::CreateTarget(const char *) (0x{}, "")'.format(
+            debugger_addr[0])
         self.assertTrue(create_target in log, log)