Initial commit

tests/common/utils/TestScnLib.cc

@@ -0,0 +1,50 @@
+#include <gtest/gtest.h>
+#include <scn/scn.h>
+#include <scn/tuple_return.h>
+
+namespace hf3fs::test {
+namespace {
+TEST(TestScnlib, ScanString) {
+  std::string word;
+  auto result = scn::scan("Hello world!", "{}", word);
+
+  ASSERT_EQ(word, "Hello");
+  ASSERT_EQ(result.range_as_string(), " world!");
+}
+
+TEST(TestScnlib, ScanMultipleValues) {
+  int i, j;
+  auto result = scn::scan("123 456 foo", "{} {}", i, j);
+
+  ASSERT_EQ(i, 123);
+  ASSERT_EQ(j, 456);
+
+  std::string str;
+  auto ret = scn::scan(result.range(), "{}", str);
+  ASSERT_EQ(static_cast<bool>(ret), true);
+  ASSERT_EQ(str, "foo");
+}
+
+TEST(TestScnlib, ScanTuple) {
+  {
+    auto [r, i] = scn::scan_tuple<int>("42", "{}");
+    ASSERT_EQ(static_cast<bool>(r), true);
+    ASSERT_EQ(i, 42);
+  }
+
+  {
+    auto [r, i, s] = scn::scan_tuple<int, std::string>("42 foo", "{} {}");
+    ASSERT_EQ(static_cast<bool>(r), true);
+    ASSERT_EQ(i, 42);
+    ASSERT_EQ(s, "foo");
+  }
+}
+
+TEST(TestScnlib, ErrorHandling) {
+  int i;
+  auto result = scn::scan("foo", "{}", i);
+  ASSERT_EQ(static_cast<bool>(result), false);
+  ASSERT_EQ(result.range_as_string(), "foo");
+}
+}  // namespace
+}  // namespace hf3fs::test