Squashed 'third_party/abseil_cpp/' changes from 768eb2ca2..ccdbb5941

ccdbb5941 Export of internal Abseil changes
01f5f81f9 Export of internal Abseil changes
2c92bdc7c Export of internal Abseil changes
e7ebf9803 Export of internal Abseil changes
2eba343b5 Export of internal Abseil changes
a8b03d90e Export of internal Abseil changes
1d31b5c36 Export of internal Abseil changes
da3a87690 Export of internal Abseil changes
8faf20461 Exclude empty directories (#697)
2069dc796 Export of internal Abseil changes
4832bf6bf Added a BUILD file in root to expose license. (#695)
af8f994af Export of internal Abseil changes
33caf1097 Export of internal Abseil changes
cf1a02e2d Export of internal Abseil changes

git-subtree-dir: third_party/abseil_cpp
git-subtree-split: ccdbb5941f992fabda7eae3ce72f55efc17c826a

1 files changed, 102 insertions, 4 deletions

diff --git a/absl/time/internal/cctz/src/time_zone_format_test.cc b/absl/time/internal/cctz/src/time_zone_format_test.cc
index 87382e156dba..e625a839fa30 100644
--- a/absl/time/internal/cctz/src/time_zone_format_test.cc
+++ b/absl/time/internal/cctz/src/time_zone_format_test.cc
@@ -48,8 +48,8 @@ namespace {
     EXPECT_STREQ(zone, al.abbr);                                  \
   } while (0)
 
-const char RFC3339_full[] = "%Y-%m-%dT%H:%M:%E*S%Ez";
-const char RFC3339_sec[] = "%Y-%m-%dT%H:%M:%S%Ez";
+const char RFC3339_full[] = "%Y-%m-%d%ET%H:%M:%E*S%Ez";
+const char RFC3339_sec[] = "%Y-%m-%d%ET%H:%M:%S%Ez";
 
 const char RFC1123_full[] = "%a, %d %b %Y %H:%M:%S %z";
 const char RFC1123_no_wday[] = "%d %b %Y %H:%M:%S %z";
@@ -679,6 +679,34 @@ TEST(Format, RFC1123Format) {  // locale specific
   EXPECT_EQ("28 Jun 1977 09:08:07 -0700", format(RFC1123_no_wday, tp, tz));
 }
 
+TEST(Format, Week) {
+  const time_zone utc = utc_time_zone();
+
+  auto tp = convert(civil_second(2017, 1, 1, 0, 0, 0), utc);
+  EXPECT_EQ("2017-01-7", format("%Y-%U-%u", tp, utc));
+  EXPECT_EQ("2017-00-0", format("%Y-%W-%w", tp, utc));
+
+  tp = convert(civil_second(2017, 12, 31, 0, 0, 0), utc);
+  EXPECT_EQ("2017-53-7", format("%Y-%U-%u", tp, utc));
+  EXPECT_EQ("2017-52-0", format("%Y-%W-%w", tp, utc));
+
+  tp = convert(civil_second(2018, 1, 1, 0, 0, 0), utc);
+  EXPECT_EQ("2018-00-1", format("%Y-%U-%u", tp, utc));
+  EXPECT_EQ("2018-01-1", format("%Y-%W-%w", tp, utc));
+
+  tp = convert(civil_second(2018, 12, 31, 0, 0, 0), utc);
+  EXPECT_EQ("2018-52-1", format("%Y-%U-%u", tp, utc));
+  EXPECT_EQ("2018-53-1", format("%Y-%W-%w", tp, utc));
+
+  tp = convert(civil_second(2019, 1, 1, 0, 0, 0), utc);
+  EXPECT_EQ("2019-00-2", format("%Y-%U-%u", tp, utc));
+  EXPECT_EQ("2019-00-2", format("%Y-%W-%w", tp, utc));
+
+  tp = convert(civil_second(2019, 12, 31, 0, 0, 0), utc);
+  EXPECT_EQ("2019-52-2", format("%Y-%U-%u", tp, utc));
+  EXPECT_EQ("2019-52-2", format("%Y-%W-%w", tp, utc));
+}
+
 //
 // Testing parse()
 //
@@ -1379,10 +1407,80 @@ TEST(Parse, RFC3339Format) {
   EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00+00:00", tz, &tp));
   ExpectTime(tp, tz, 2014, 2, 12, 20, 21, 0, 0, false, "UTC");
 
-  // Check that %Ez also accepts "Z" as a synonym for "+00:00".
+  // Check that %ET also accepts "t".
   time_point<chrono::nanoseconds> tp2;
-  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00Z", tz, &tp2));
+  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12t20:21:00+00:00", tz, &tp2));
   EXPECT_EQ(tp, tp2);
+
+  // Check that %Ez also accepts "Z" as a synonym for "+00:00".
+  time_point<chrono::nanoseconds> tp3;
+  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00Z", tz, &tp3));
+  EXPECT_EQ(tp, tp3);
+
+  // Check that %Ez also accepts "z" as a synonym for "+00:00".
+  time_point<chrono::nanoseconds> tp4;
+  EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00z", tz, &tp4));
+  EXPECT_EQ(tp, tp4);
+}
+
+TEST(Parse, Week) {
+  const time_zone utc = utc_time_zone();
+  time_point<absl::time_internal::cctz::seconds> tp;
+
+  auto exp = convert(civil_second(2017, 1, 1, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2017-01-7", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2017-00-0", utc, &tp));
+  EXPECT_EQ(exp, tp);
+
+  exp = convert(civil_second(2017, 12, 31, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2017-53-7", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2017-52-0", utc, &tp));
+  EXPECT_EQ(exp, tp);
+
+  exp = convert(civil_second(2018, 1, 1, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2018-00-1", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2018-01-1", utc, &tp));
+  EXPECT_EQ(exp, tp);
+
+  exp = convert(civil_second(2018, 12, 31, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2018-52-1", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2018-53-1", utc, &tp));
+  EXPECT_EQ(exp, tp);
+
+  exp = convert(civil_second(2019, 1, 1, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2019-00-2", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2019-00-2", utc, &tp));
+  EXPECT_EQ(exp, tp);
+
+  exp = convert(civil_second(2019, 12, 31, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2019-52-2", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2019-52-2", utc, &tp));
+  EXPECT_EQ(exp, tp);
+}
+
+TEST(Parse, WeekYearShift) {
+  // %U/%W conversions with week values in {0, 52, 53} can slip
+  // into the previous/following calendar years.
+  const time_zone utc = utc_time_zone();
+  time_point<absl::time_internal::cctz::seconds> tp;
+
+  auto exp = convert(civil_second(2019, 12, 31, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2020-00-2", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2020-00-2", utc, &tp));
+  EXPECT_EQ(exp, tp);
+
+  exp = convert(civil_second(2021, 1, 1, 0, 0, 0), utc);
+  EXPECT_TRUE(parse("%Y-%U-%u", "2020-52-5", utc, &tp));
+  EXPECT_EQ(exp, tp);
+  EXPECT_TRUE(parse("%Y-%W-%w", "2020-52-5", utc, &tp));
+  EXPECT_EQ(exp, tp);
 }
 
 TEST(Parse, MaxRange) {