[clang][include-tree] Add test

Author: jansvoboda11

clang/test/ClangScanDeps/modules-include-tree-implementation-transitive.c

@@ -0,0 +1,50 @@
+// REQUIRES: ondisk_cas
+
+// This test checks that imports of transitively-loaded implementation module
+// are not marked as spurious.
+
+// RUN: rm -rf %t
+// RUN: split-file %s %t
+// RUN: sed "s|DIR|%/t|g" %t/cdb.json.in > %t/cdb.json
+
+//--- cdb.json.in
+[{
+  "file": "DIR/tu.m",
+  "directory": "DIR",
+  "command": "clang -c DIR/tu.m -o DIR/tu.o -F DIR/frameworks -fmodules -fmodule-name=FW -fmodules-cache-path=DIR/module-cache"
+}]
+
+//--- frameworks/FW.framework/Modules/module.modulemap
+framework module FW { umbrella header "FW.h" }
+//--- frameworks/FW.framework/Headers/FW.h
+#include <FW/Sub.h>
+//--- frameworks/FW.framework/Headers/Sub.h
+
+//--- module.modulemap
+module Mod { header "Mod.h" }
+//--- Mod.h
+#include <FW/Sub.h>
+//--- tu.m
+#include "Mod.h"
+#include <FW/Sub.h>
+
+// RUN: clang-scan-deps -compilation-database %t/cdb.json \
+// RUN:   -format experimental-include-tree-full -cas-path %t/cas \
+// RUN:   -module-files-dir %t/cas-outputs > %t/cas-deps.json
+
+// RUN: %deps-to-rsp %t/cas-deps.json --module-name=FW  > %t/cas-FW.cc1.rsp
+// RUN: %deps-to-rsp %t/cas-deps.json --module-name=Mod > %t/cas-Mod.cc1.rsp
+// RUN: %deps-to-rsp %t/cas-deps.json --tu-index=0      > %t/cas-tu.rsp
+
+// RUN: cat %t/cas-tu.rsp | sed -E 's|.*"-fcas-include-tree" "(llvmcas://[[:xdigit:]]+)".*|\1|' > %t/tu.casid
+// RUN: clang-cas-test -cas %t/cas -print-include-tree @%t/tu.casid > %t/tu-include-tree.txt
+// RUN: FileCheck %s -input-file %t/tu-include-tree.txt -DPREFIX=%/t
+// CHECK:      [[PREFIX]]/tu.m llvmcas://
+// CHECK-NEXT: 1:1 <built-in> llvmcas://
+// CHECK-NEXT: 2:1 (Module) Mod
+// CHECK-NEXT: 3:1 [[PREFIX]]/frameworks/FW.framework/Headers/Sub.h llvmcas://{{.*}}
+// CHECK-NEXT:   Submodule: FW
+
+// RUN: %clang @%t/cas-FW.cc1.rsp
+// RUN: %clang @%t/cas-Mod.cc1.rsp
+// RUN: %clang @%t/cas-tu.rsp