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-rw-r--r--llvm/unittests/ADT/StringRefTest.cpp7
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/unittests/ADT/StringRefTest.cpp b/llvm/unittests/ADT/StringRefTest.cpp
index 2e5159dde1c..cbb2a30ff17 100644
--- a/llvm/unittests/ADT/StringRefTest.cpp
+++ b/llvm/unittests/ADT/StringRefTest.cpp
@@ -509,6 +509,13 @@ TEST(StringRefTest, Count) {
EXPECT_EQ(1U, Str.count("hello"));
EXPECT_EQ(1U, Str.count("ello"));
EXPECT_EQ(0U, Str.count("zz"));
+
+ StringRef OverlappingAbba("abbabba");
+ EXPECT_EQ(1U, OverlappingAbba.count("abba"));
+ StringRef NonOverlappingAbba("abbaabba");
+ EXPECT_EQ(2U, NonOverlappingAbba.count("abba"));
+ StringRef ComplexAbba("abbabbaxyzabbaxyz");
+ EXPECT_EQ(2U, ComplexAbba.count("abba"));
}
TEST(StringRefTest, EditDistance) {
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