unittests: add test for APInt::toString()
Follow up to r133032.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133107 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp
index dbd0cb7..1f78cd3 100644
--- a/unittests/ADT/APIntTest.cpp
+++ b/unittests/ADT/APIntTest.cpp
@@ -320,6 +320,52 @@
EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16));
}
+TEST(APIntTest, toString) {
+ SmallString<16> S;
+ bool isSigned;
+
+ APInt(8, 0).toString(S, 2, true, true);
+ EXPECT_EQ(S.str().str(), "0b0");
+ S.clear();
+ APInt(8, 0).toString(S, 8, true, true);
+ EXPECT_EQ(S.str().str(), "00");
+ S.clear();
+ APInt(8, 0).toString(S, 10, true, true);
+ EXPECT_EQ(S.str().str(), "0");
+ S.clear();
+ APInt(8, 0).toString(S, 16, true, true);
+ EXPECT_EQ(S.str().str(), "0x0");
+ S.clear();
+
+ isSigned = false;
+ APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
+ EXPECT_EQ(S.str().str(), "0b11111111");
+ S.clear();
+ APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
+ EXPECT_EQ(S.str().str(), "0377");
+ S.clear();
+ APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
+ EXPECT_EQ(S.str().str(), "255");
+ S.clear();
+ APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
+ EXPECT_EQ(S.str().str(), "0xFF");
+ S.clear();
+
+ isSigned = true;
+ APInt(8, 255, isSigned).toString(S, 2, isSigned, true);
+ EXPECT_EQ(S.str().str(), "-0b1");
+ S.clear();
+ APInt(8, 255, isSigned).toString(S, 8, isSigned, true);
+ EXPECT_EQ(S.str().str(), "-01");
+ S.clear();
+ APInt(8, 255, isSigned).toString(S, 10, isSigned, true);
+ EXPECT_EQ(S.str().str(), "-1");
+ S.clear();
+ APInt(8, 255, isSigned).toString(S, 16, isSigned, true);
+ EXPECT_EQ(S.str().str(), "-0x1");
+ S.clear();
+}
+
TEST(APIntTest, Log2) {
EXPECT_EQ(APInt(15, 7).logBase2(), 2U);
EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3U);