1 files changed, 114 insertions, 0 deletions
diff --git a/test/test_tz_info.cc b/test/test_tz_info.cc
new file mode 100644
index 0000000..962f903
--- /dev/null
+++ b/test/test_tz_info.cc
@@ -0,0 +1,114 @@
+#include "common.hh"
+
+#include "file_test.hh"
+#include "logger.hh"
+#include "tz_info.hh"
+
+#include <gtest/gtest.h>
+
+namespace {
+
+class TzInfoTest : public FileTest {
+public:
+  void Load(char const* data, size_t size) {
+    write(std::string_view(data, size));
+    close();
+    tz_info_ = TzInfo::create(logger_, path().parent_path());
+  }
+
+  std::optional<time_t> get_local_time(time_t utc) {
+    if (!tz_info_)
+      return std::nullopt;
+    return tz_info_->get_local_time(path().filename().c_str(), utc);
+  }
+
+private:
+  std::shared_ptr<Logger> logger_{Logger::create_null()};
+  std::unique_ptr<TzInfo> tz_info_;
+};
+
+constexpr const time_t kHour = 60 * 60;
+
+}  // namespace
+
+TEST_F(TzInfoTest, v2_honolulu) {
+  char data[] =
+    "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+    "\0\0\0\x6"
+    "\0\0\0\x6"
+    "\0\0\0\0"
+    "\0\0\0\x7"
+    "\0\0\0\x6"
+    "\0\0\0\x14"
+    "\x80\0\0\0"
+    "\xbb\x05\x43\x48"
+    "\xbb\x21\x71\x58"
+    "\xcb\x89\x3d\xc8"
+    "\xd2\x23\xf4\x70"
+    "\xd2\x61\x49\x38"
+    "\xd5\x8d\x73\x48"
+    "\1\2\1\3\4\1\5"
+    "\xff\xff\x6c\x02\0\x00"
+    "\xff\xff\x6c\x58\0\x04"
+    "\xff\xff\x7a\x68\1\x08"
+    "\xff\xff\x7a\x68\1\x0c"
+    "\xff\xff\x7a\x68\1\x10"
+    "\xff\xff\x73\x60\0\x04"
+    "LMT\0"
+    "HST\0"
+    "HDT\0"
+    "HWT\0"
+    "HPT\0"
+    "\0\0\0\0\1\0"
+    "\0\0\0\0\1\0"
+
+    "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
+    "\0\0\0\x6"
+    "\0\0\0\x6"
+    "\0\0\0\0"
+    "\0\0\0\x7"
+    "\0\0\0\x6"
+    "\0\0\0\x14"
+    "\xff\xff\xff\xff"
+    "\x74\xe0\x70\xbe"
+    "\xff\xff\xff\xff"
+    "\xbb\x05\x43\x48"
+    "\xff\xff\xff\xff"
+    "\xbb\x21\x71\x58"
+    "\xff\xff\xff\xff"
+    "\xcb\x89\x3d\xc8"
+    "\xff\xff\xff\xff"
+    "\xd2\x23\xf4\x70"
+    "\xff\xff\xff\xff"
+    "\xd2\x61\x49\x38"
+    "\xff\xff\xff\xff"
+    "\xd5\x8d\x73\x48"
+    "\1\2\1\3\4\1\5"
+    "\xff\xff\x6c\x02\0\x00"
+    "\xff\xff\x6c\x58\0\x04"
+    "\xff\xff\x7a\x68\1\x08"
+    "\xff\xff\x7a\x68\1\x0c"
+    "\xff\xff\x7a\x68\1\x10"
+    "\xff\xff\x73\x60\0\x04"
+    "LMT\0"
+    "HST\0"
+    "HDT\0"
+    "HWT\0"
+    "HPT\0"
+    "\0\0\0\0\1\0"
+    "\0\0\0\0\1\0"
+    "\nHST10\n";
+  Load(data, sizeof(data) - 1);
+
+  auto ret = get_local_time(-1156939200);  // 1933-05-04T12:00:00Z
+  EXPECT_TRUE(ret.has_value());
+  if (ret.has_value()) {
+    EXPECT_EQ(-1156939200 - 9.5 * kHour, ret.value());
+  }
+
+  ret = get_local_time(1546300800);  // 2019-01-01T00:00:00Z
+  EXPECT_TRUE(ret.has_value());
+  if (ret.has_value()) {
+    EXPECT_EQ(1546300800 - 10 * kHour, ret.value());
+  }
+}