[NFC][SpecialCaseList] Add unit test for line numbers

Author: vitalybuka

llvm/unittests/Support/SpecialCaseListTest.cpp

@@ -306,4 +306,24 @@ TEST_F(SpecialCaseListTest, Version2) {
   EXPECT_TRUE(SCL->inSection("sect2", "fun", "bar"));
   EXPECT_FALSE(SCL->inSection("sect3", "fun", "bar"));
 }
+
+TEST_F(SpecialCaseListTest, LinesInSection) {
+  std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("fun:foo\n"
+                                                             "fun:bar\n"
+                                                             "fun:foo\n");
+  // FIXME: Get the last one for #139128.
+  EXPECT_EQ(1u, SCL->inSectionBlame("sect1", "fun", "foo"));
+  EXPECT_EQ(2u, SCL->inSectionBlame("sect1", "fun", "bar"));
+}
+
+TEST_F(SpecialCaseListTest, LinesCrossSection) {
+  std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("fun:foo\n"
+                                                             "fun:bar\n"
+                                                             "fun:foo\n"
+                                                             "[sect1]\n"
+                                                             "fun:bar\n");
+  // FIXME: Get the last one for #139128.
+  EXPECT_EQ(1u, SCL->inSectionBlame("sect1", "fun", "foo"));
+  EXPECT_EQ(2u, SCL->inSectionBlame("sect1", "fun", "bar"));
+}
 }