add a test case that uses compilation database

Author: andrurogerz

Tests/GlobalIncludes.cc

@@ -0,0 +1,10 @@
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: echo "[{\"directory\":\"%p\",\"command\":\"clang++ -c GlobalIncludes.cc -I%p/include\",\"file\":\"%t/GlobalIncludes.obj\"}]" | sed -e 's/\\/\\\\/g' > %t/compile_commands.json
+// RUN: %idt -p %t -export-macro IDT_TEST_ABI %s 2>&1 | %FileCheck %s
+#include <GlobalHeader.h>
+// CHECK: [[PATH:(.*[\\\/])?include[\\\/]GlobalHeader\.h]]:1:1: remark: unexported public interface 'globalFunction'
+
+static void testFunction() {
+  globalFunction();
+}

Tests/include/GlobalHeader.h

@@ -0,0 +1 @@
+void globalFunction();

Tests/lit.cfg

@@ -39,7 +39,7 @@ if not use_lit_shell:
 
 config.test_format = lit.formats.ShTest(execute_external = False)
 
-config.suffixes = ['.hh']
+config.suffixes = ['.hh', '.cc']
 config.excludes = ['CMakeLists.txt']
 
 config.test_source_root = os.path.join(ids_src_root, 'Tests')