diff --git a/libnixf/lib/Parse/test/Parser.cpp b/libnixf/lib/Parse/test/Parser.cpp
index b35ec062b..88947d381 100644
--- a/libnixf/lib/Parse/test/Parser.cpp
+++ b/libnixf/lib/Parse/test/Parser.cpp
@@ -80,6 +80,8 @@ TEST(Parser, StringMissingDQuote) {
   // Check the diagnostic.
   ASSERT_EQ(Diags.diags().size(), 1);
   auto &D = Diags.diags()[0];
+  ASSERT_EQ(D->range().Begin, Src.begin() + 4);
+  ASSERT_EQ(D->range().End, Src.begin() + 4);
   ASSERT_EQ(D->kind(), Diagnostic::DK_Expected);
   ASSERT_EQ(D->args().size(), 1);
   ASSERT_EQ(D->args()[0], "\" to close string literal");
@@ -87,6 +89,8 @@ TEST(Parser, StringMissingDQuote) {
   // Check the note.
   ASSERT_EQ(D->notes().size(), 1);
   auto &N = D->notes()[0];
+  ASSERT_EQ(N->range().Begin, Src.begin() + 0);
+  ASSERT_EQ(N->range().End, Src.begin() + 0);
   ASSERT_EQ(N->kind(), Note::NK_ToMachThis);
   ASSERT_EQ(N->args().size(), 1);
   ASSERT_EQ(N->args()[0], "\"");