https://gcc.gnu.org/g:28943c3c74cc320c009d124523029ce4b8368121

commit r16-4416-g28943c3c74cc320c009d124523029ce4b8368121
Author: Tomasz Kamiński <[email protected]>
Date:   Thu Oct 9 16:27:18 2025 +0200

    libstdc++: Formatting tests for std::chrono compose types.
    
    This covers:
     * weekday_indexed, weekday_last
     * month_day, month_day_last,
     * month_weekday, month_weekday_last
     * year_month
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/std/time/month_day/io.cc: New formatting tests.
            * testsuite/std/time/month_day_last/io.cc: Likewise.
            * testsuite/std/time/month_weekday/io.cc: Likewise.
            * testsuite/std/time/month_weekday_last/io.cc: Likewise.
            * testsuite/std/time/weekday_indexed/io.cc: Likewise.
            * testsuite/std/time/weekday_last/io.cc: Likewise.
            * testsuite/std/time/year_month/io.cc: Likewise.
    
    Reviewed-by: Patrick Palka <[email protected]>
    Signed-off-by: Tomasz Kamiński <[email protected]>

Diff:
---
 libstdc++-v3/testsuite/std/time/month_day/io.cc    | 41 +++++++++++++++++++++-
 .../testsuite/std/time/month_day_last/io.cc        | 41 +++++++++++++++++++++-
 .../testsuite/std/time/month_weekday/io.cc         | 41 +++++++++++++++++++++-
 .../testsuite/std/time/month_weekday_last/io.cc    | 41 +++++++++++++++++++++-
 .../testsuite/std/time/weekday_indexed/io.cc       | 41 +++++++++++++++++++++-
 libstdc++-v3/testsuite/std/time/weekday_last/io.cc | 41 +++++++++++++++++++++-
 libstdc++-v3/testsuite/std/time/year_month/io.cc   | 41 +++++++++++++++++++++-
 7 files changed, 280 insertions(+), 7 deletions(-)

diff --git a/libstdc++-v3/testsuite/std/time/month_day/io.cc 
b/libstdc++-v3/testsuite/std/time/month_day/io.cc
index 30aa58813560..c3ae180b32b7 100644
--- a/libstdc++-v3/testsuite/std/time/month_day/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_day/io.cc
@@ -22,6 +22,45 @@ test_ostream()
   VERIFY( ss.str() == "juil./27" );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%b%%%B%t%m%n %d%%%e}", month(1)/day(3));
+  VERIFY( s == "Jan%January\t01\n 03% 3" );
+  s = std::format(loc_fr, "{:L%b%%%B%t%m%n %d%%%e}", month(1)/day(3));
+  VERIFY( s == "janv.%janvier\t01\n 03% 3");
+
+  s = std::format("{0:%m/%d} {0}", month(10)/day(13));
+  VERIFY( s == "10/13 Oct/13" );
+  s = std::format("{0:%m/%d} {0}", month(13)/day(34));
+  VERIFY( s == "13/34 13 is not a valid month/34 is not a valid day" );
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "bBdehm";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto md = month(1)/day(10);
+      (void) std::vformat(std::string_view(fmt, 5), std::make_format_args(md));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 void
 test_parse()
 {
@@ -102,6 +141,6 @@ test_parse()
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
   test_parse();
 }
diff --git a/libstdc++-v3/testsuite/std/time/month_day_last/io.cc 
b/libstdc++-v3/testsuite/std/time/month_day_last/io.cc
index d15192c9b7a8..484a8d8a05e8 100644
--- a/libstdc++-v3/testsuite/std/time/month_day_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_day_last/io.cc
@@ -22,8 +22,47 @@ test_ostream()
   VERIFY( ss.str() == "juil./last" );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%b%%%B%t%m%n}", month(3)/last);
+  VERIFY( s == "Mar%March\t03\n" );
+  s = std::format(loc_fr, "{:L%b%%%B%t%m%n}", month(3)/last);
+  VERIFY( s == "mars%mars\t03\n");
+
+  s = std::format("{0:%m/last} {0}", month(4)/last);
+  VERIFY( s == "04/last Apr/last" );
+  s = std::format("{0:%m/last} {0}", month(0)/last);
+  VERIFY( s == "00/last 0 is not a valid month/last" );
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "bBhm";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto mdl = month(1)/last;
+      (void) std::vformat(std::string_view(fmt, 5), 
std::make_format_args(mdl));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
 }
diff --git a/libstdc++-v3/testsuite/std/time/month_weekday/io.cc 
b/libstdc++-v3/testsuite/std/time/month_weekday/io.cc
index 183803071098..0c2dcafe6543 100644
--- a/libstdc++-v3/testsuite/std/time/month_weekday/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_weekday/io.cc
@@ -23,8 +23,47 @@ test_ostream()
   VERIFY( ss.str() == "juil./jeu.[4]" );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%b%%%B%t%m%n %a%%%A%t%u%n%w}", 
month(5)/weekday(1)[2]);
+  VERIFY( s == "May%May\t05\n Mon%Monday\t1\n1" );
+  s = std::format(loc_fr, "{:L%b%%%B%t%m%n %a%%%A%t%u%n%w}", 
month(5)/weekday(1)[2]);
+  VERIFY( s == "mai%mai\t05\n lun.%lundi\t1\n1");
+
+  s = std::format("{0:%m/%u[]} {0}", month(9)/weekday(0)[2]);
+  VERIFY( s == "09/7[] Sep/Sun[2]" );
+  s = std::format("{0:%m/%u[]} {0}", month(111)/weekday(8)[0]);
+  VERIFY( s == "111/8[] 111 is not a valid month/8 is not a valid weekday[0 is 
not a valid index]" );
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "aAbBhmuw";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto mwi = month(1)/weekday(1)[1];
+      (void) std::vformat(std::string_view(fmt, 5), 
std::make_format_args(mwi));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
 }
diff --git a/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc 
b/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc
index 6ba4d8ab084e..2c29258e1a86 100644
--- a/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc
@@ -23,8 +23,47 @@ test_ostream()
   VERIFY( ss.str() == "juil./jeu.[last]" );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%b%%%B%t%m%n %a%%%A%t%u%n%w}", 
month(6)/weekday(2)[last]);
+  VERIFY( s == "Jun%June\t06\n Tue%Tuesday\t2\n2" );
+  s = std::format(loc_fr, "{:L%b%%%B%t%m%n %a%%%A%t%u%n%w}", 
month(6)/weekday(2)[last]);
+  VERIFY( s == "juin%juin\t06\n mar.%mardi\t2\n2");
+
+  s = std::format("{0:%m/%w[last]} {0}", month(8)/weekday(7)[last]);
+  VERIFY( s == "08/0[last] Aug/Sun[last]" );
+  s = std::format("{0:%m/%w[last]} {0}", month(70)/weekday(9)[last]);
+  VERIFY( s == "70/9[last] 70 is not a valid month/9 is not a valid 
weekday[last]" );
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "aAbBhmuw";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto mwl = month(1)/weekday(1)[last];
+      (void) std::vformat(std::string_view(fmt, 5), 
std::make_format_args(mwl));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
 }
diff --git a/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc 
b/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc
index ca315de865b2..ae864192fa5f 100644
--- a/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc
+++ b/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc
@@ -22,8 +22,47 @@ test_ostream()
   VERIFY( ss.str() == "sam.[1]" );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%a%%%A%t%u%n%w}", weekday(7)[3]);
+  VERIFY( s == "Sun%Sunday\t7\n0" );
+  s = std::format(loc_fr, "{:L%a%%%A%t%u%n%w}", weekday(7)[3]);
+  VERIFY( s == "dim.%dimanche\t7\n0");
+
+  s = std::format("{0:%w[]} {0}", weekday(4)[4]);
+  VERIFY( s == "4[] Thu[4]" );
+  s = std::format("{0:%w[]} {0}", weekday(10)[7]);
+  VERIFY( s == "10[] 10 is not a valid weekday[7 is not a valid index]" );
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "aAuw";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto wi = weekday(1)[1];
+      (void) std::vformat(std::string_view(fmt, 5), std::make_format_args(wi));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
 }
diff --git a/libstdc++-v3/testsuite/std/time/weekday_last/io.cc 
b/libstdc++-v3/testsuite/std/time/weekday_last/io.cc
index 3b64c655617b..49cf0d5bddd9 100644
--- a/libstdc++-v3/testsuite/std/time/weekday_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/weekday_last/io.cc
@@ -22,8 +22,47 @@ test_ostream()
   VERIFY( ss.str() == "sam.[last]" );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%a%%%A%t%u%n%w}", weekday(5)[last]);
+  VERIFY( s == "Fri%Friday\t5\n5" );
+  s = std::format(loc_fr, "{:L%a%%%A%t%u%n%w}", weekday(5)[last]);
+  VERIFY( s == "ven.%vendredi\t5\n5");
+
+  s = std::format("{0:%w[last]} {0}", weekday(6)[last]);
+  VERIFY( s == "6[last] Sat[last]" );
+  s = std::format("{0:%w[last]} {0}", weekday(9)[last]);
+  VERIFY( s == "9[last] 9 is not a valid weekday[last]" );
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "aAuw";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto wl = weekday(1)[last];
+      (void) std::vformat(std::string_view(fmt, 5), std::make_format_args(wl));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
 }
diff --git a/libstdc++-v3/testsuite/std/time/year_month/io.cc 
b/libstdc++-v3/testsuite/std/time/year_month/io.cc
index 7bb3442e2990..3392eb334bf7 100644
--- a/libstdc++-v3/testsuite/std/time/year_month/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year_month/io.cc
@@ -22,6 +22,45 @@ test_ostream()
   VERIFY( ss.str() == "2023/juil." );
 }
 
+void
+test_format()
+{
+  using namespace std::chrono;
+  std::locale loc_fr(ISO_8859(15,fr_FR));
+
+  auto s = std::format("{:%C%%%y\t%Y %b%%%B%t%m%n}", year(2019)/month(4));
+  VERIFY( s == "20%19\t2019 Apr%April\t04\n" );
+  s = std::format(loc_fr, "{:L%C%%%y\t%Y %b%%%B%t%m%n}", year(2019)/month(4));
+  VERIFY( s == "20%19\t2019 avril%avril\t04\n");
+
+  s = std::format("{0:%Y/%m} {0}", year(2018)/month(2));
+  VERIFY( s == "2018/02 2018/Feb" );
+  s = std::format("{0:%Y/%m} {0}", year(-32768)/month(15));
+  VERIFY( s == "-32768/15 -32768 is not a valid year/15 is not a valid month" 
);
+
+  std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
+  std::string_view my_specs = "CbBhmyY";
+  for (char c : specs)
+  {
+    char fmt[] = { '{', ':', '%', c, '}' };
+    try
+    {
+      auto ym = year(2013)/month(1);
+      (void) std::vformat(std::string_view(fmt, 5), std::make_format_args(ym));
+      // The call above should throw for any conversion-spec not in my_specs:
+      VERIFY(my_specs.find(c) != my_specs.npos);
+    }
+    catch (const std::format_error& e)
+    {
+      VERIFY(my_specs.find(c) == my_specs.npos);
+      std::string_view s = e.what();
+      // Libstdc++-specific message:
+      VERIFY(s.find("format argument does not contain the information "
+                   "required by the chrono-specs") != s.npos);
+    }
+  }
+}
+
 void
 test_parse()
 {
@@ -73,6 +112,6 @@ test_parse()
 int main()
 {
   test_ostream();
-  // TODO: test_format();
+  test_format();
   test_parse();
 }

Reply via email to