1 files changed, 39 insertions, 0 deletions
diff --git a/clang-tools-extra/test/clang-tidy/abseil-no-internal-dependencies.cpp b/clang-tools-extra/test/clang-tidy/abseil-no-internal-dependencies.cpp
new file mode 100644
index 00000000000..bd56cb04df7
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/abseil-no-internal-dependencies.cpp
@@ -0,0 +1,39 @@
+// RUN: %check_clang_tidy %s abseil-no-internal-dependencies %t,  -- -- -I %S/Inputs
+// RUN: clang-tidy -checks='-*, abseil-no-internal-dependencies' -header-filter='.*' %s -- -I %S/Inputs 2>&1 | FileCheck %s
+
+#include "absl/strings/internal-file.h"
+// CHECK-NOT: warning:
+
+#include "absl/external-file.h"
+// CHECK: absl/external-file.h:6:24: warning: do not reference any 'internal' namespaces; those implementation details are reserved to Abseil [abseil-no-internal-dependencies]
+
+void DirectAcess() {
+  absl::strings_internal::InternalFunction();
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not reference any 'internal' namespaces; those implementation details are reserved to Abseil
+
+  absl::strings_internal::InternalTemplateFunction<std::string>("a");
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not reference any 'internal' namespaces; those implementation details are reserved to Abseil
+}
+
+class FriendUsage {
+  friend struct absl::container_internal::InternalStruct;
+  // CHECK-MESSAGES: :[[@LINE-1]]:17: warning: do not reference any 'internal' namespaces; those implementation details are reserved to Abseil
+};
+
+namespace absl {
+void OpeningNamespace() {
+  strings_internal::InternalFunction();
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: do not reference any 'internal' namespaces; those implementation details are reserved to Abseil
+}
+} // namespace absl
+
+// should not trigger warnings
+void CorrectUsage() {
+  std::string Str = absl::StringsFunction("a");
+  absl::SomeContainer b;
+}
+
+namespace absl {
+SomeContainer b;
+std::string Str = absl::StringsFunction("a");
+} // namespace absl