1 files changed, 50 insertions, 0 deletions
diff --git a/lldb/unittests/Utility/ArchSpecTest.cpp b/lldb/unittests/Utility/ArchSpecTest.cpp
index d7397cbec53..a84112ea289 100644
--- a/lldb/unittests/Utility/ArchSpecTest.cpp
+++ b/lldb/unittests/Utility/ArchSpecTest.cpp
@@ -171,3 +171,53 @@ TEST(ArchSpecTest, MergeFromMachOUnknown) {
   A.MergeFrom(B);
   ASSERT_EQ(A.GetCore(), ArchSpec::eCore_uknownMach64);
 }
+
+TEST(ArchSpecTest, Compatibility) {
+  {
+    ArchSpec A("x86_64-apple-macosx10.12");
+    ArchSpec B("x86_64-apple-macosx10.12");
+    ASSERT_TRUE(A.IsExactMatch(B));
+    ASSERT_TRUE(A.IsCompatibleMatch(B));
+  }
+  {
+    // The version information is auxiliary to support availablity but
+    // doesn't affect compatibility.
+    ArchSpec A("x86_64-apple-macosx10.11");
+    ArchSpec B("x86_64-apple-macosx10.12");
+    ASSERT_TRUE(A.IsExactMatch(B));
+    ASSERT_TRUE(A.IsCompatibleMatch(B));
+  }
+  {
+    ArchSpec A("x86_64-apple-macosx10.13");
+    ArchSpec B("x86_64h-apple-macosx10.13");
+    ASSERT_FALSE(A.IsExactMatch(B));
+    ASSERT_TRUE(A.IsCompatibleMatch(B));
+  }
+  {
+    ArchSpec A("x86_64-apple-macosx");
+    ArchSpec B("x86_64-apple-ios-simulator");
+    ASSERT_FALSE(A.IsExactMatch(B));
+    ASSERT_FALSE(A.IsCompatibleMatch(B));
+  }
+  {
+    ArchSpec A("x86_64-*-*");
+    ArchSpec B("x86_64-apple-ios-simulator");
+    ASSERT_FALSE(A.IsExactMatch(B));
+    ASSERT_FALSE(A.IsCompatibleMatch(B));
+  }
+  {
+    ArchSpec A("arm64-*-*");
+    ArchSpec B("arm64-apple-ios");
+    ASSERT_FALSE(A.IsExactMatch(B));
+    // FIXME: This looks unintuitive and we should investigate whether
+    // thi is the desired behavior.
+    ASSERT_FALSE(A.IsCompatibleMatch(B));
+  }
+  {
+    ArchSpec A("x86_64-*-*");
+    ArchSpec B("x86_64-apple-ios-simulator");
+    ASSERT_FALSE(A.IsExactMatch(B));
+    // FIXME: See above, though the extra environment complicates things.
+    ASSERT_FALSE(A.IsCompatibleMatch(B));
+  }
+}