1 files changed, 18 insertions, 0 deletions
diff --git a/unittests/ADT/StringExtrasTest.cpp b/unittests/ADT/StringExtrasTest.cpp
index f98f388f64f..1df200553a6 100644
--- a/unittests/ADT/StringExtrasTest.cpp
+++ b/unittests/ADT/StringExtrasTest.cpp
@@ -13,6 +13,17 @@
 
 using namespace llvm;
 
+TEST(StringExtrasTest, isPrint) {
+  EXPECT_FALSE(isPrint('\0'));
+  EXPECT_FALSE(isPrint('\t'));
+  EXPECT_TRUE(isPrint('0'));
+  EXPECT_TRUE(isPrint('a'));
+  EXPECT_TRUE(isPrint('A'));
+  EXPECT_TRUE(isPrint(' '));
+  EXPECT_TRUE(isPrint('~'));
+  EXPECT_TRUE(isPrint('?'));
+}
+
 TEST(StringExtrasTest, Join) {
   std::vector<std::string> Items;
   EXPECT_EQ("", join(Items.begin(), Items.end(), " <sep> "));
@@ -93,6 +104,13 @@ TEST(StringExtrasTest, printLowerCase) {
   EXPECT_EQ("abcdefg01234.,&!~`'}\"", OS.str());
 }
 
+TEST(StringExtrasTest, printEscapedString) {
+  std::string str;
+  raw_string_ostream OS(str);
+  printEscapedString("ABCdef123&<>\\\"'\t", OS);
+  EXPECT_EQ("ABCdef123&<>\\5C\\22'\\09", OS.str());
+}
+
 TEST(StringExtrasTest, printHTMLEscaped) {
   std::string str;
   raw_string_ostream OS(str);