Initial support for multiple languages

config/test.exs

@@ -1,3 +1,4 @@
 import Config
 
-config :elixir, :time_zone_database, Tz.TimeZoneDatabase
+config :date_time_parser, cldr_backend: DateTimeParser.Cldr
+config :elixir, :time_zone_database, Tz.TimeZoneDatabase

lib/combinators.ex.exs

@@ -2,32 +2,63 @@ defmodule DateTimeParser.Combinators do
   @moduledoc false
   # credo:disable-for-this-file
 
-  @months_map %{
-    "january" => 1,
-    "february" => 2,
-    "march" => 3,
-    "april" => 4,
-    "may" => 5,
-    "june" => 6,
-    "july" => 7,
-    "august" => 8,
-    "september" => 9,
-    "october" => 10,
-    "november" => 11,
-    "december" => 12,
-    "jan" => 1,
-    "feb" => 2,
-    "mar" => 3,
-    "apr" => 4,
-    "jun" => 6,
-    "jul" => 7,
-    "aug" => 8,
-    "sept" => 9,
-    "sep" => 9,
-    "oct" => 10,
-    "nov" => 11,
-    "dec" => 12
-  }
+  @cldr_backend Application.compile_env(:date_time_parser, :cldr_backend)
+  if Code.ensure_loaded?(@cldr_backend) and
+       Code.ensure_loaded?(Cldr.DateTime) and
+       Code.ensure_loaded?(Cldr.Calendar) do
+    @cldr_month_format_wide 4
+    @cldr_month_format_abbr 3
+    supported_locales = @cldr_backend.known_locale_names()
+
+    @months_map (for month_numeric <- 1..12,
+                     date = Date.new!(2022, month_numeric, 1),
+                     lang <- supported_locales,
+                     lang = to_string(lang),
+                     cldr_format <- [@cldr_month_format_wide, @cldr_month_format_abbr],
+                     reduce: Map.new() do
+                   acc ->
+                     month_str =
+                       date
+                       |> Cldr.DateTime.Formatter.standalone_month(
+                         cldr_format,
+                         lang,
+                         @cldr_backend
+                       )
+                       |> String.downcase()
+
+                     Map.put(acc, month_str, month_numeric)
+                 end)
+
+    @cldr_day_format_wide 4
+    @cldr_day_format_abbr 1
+    @cldr_day_format_short 6
+    @vocal_days (for cldr_format <- [
+                       @cldr_day_format_wide,
+                       @cldr_day_format_abbr,
+                       @cldr_day_format_short
+                     ],
+                     lang <- supported_locales,
+                     lang = to_string(lang),
+                     day_numeric <- 1..7,
+                     date = Date.new!(2022, 1, day_numeric),
+                     uniq: true do
+                   date
+                   |> Cldr.DateTime.Formatter.day_name(cldr_format, lang, @cldr_backend)
+                   |> String.downcase()
+                 end)
+  else
+    @vocal_days ~w(sunday monday tuesday wednesday thursday friday saturday) ++
+                  ~w(sun mon tue tues wed weds thu thur thurs fri sat)
+    @months_map ~w(january february march april may june july august september october november december)
+                |> Enum.with_index(1)
+                |> Enum.reduce(Map.new(), fn {base_month, index}, acc ->
+                  month_abbr = String.slice(base_month, 0..2)
+
+                  acc
+                  |> Map.put(base_month, index)
+                  |> Map.put(month_abbr, index)
+                end)
+  end
 
   def to_integer(value) when is_binary(value), do: String.to_integer(value)
   def vocal_month_to_numeric_month(value), do: Map.get(@months_map, value)
@@ -165,36 +196,6 @@ defmodule DateTimeParser.Combinators do
   defparsec(:parse_time, time, inline: true)
 
   ## DATE
-
-  @days_map %{
-    "sun" => "Sunday",
-    "mon" => "Monday",
-    "tues" => "Tuesday",
-    "tue" => "Tuesday",
-    "wed" => "Wednesday",
-    "weds" => "Wednesday",
-    "thurs" => "Thursday",
-    "thur" => "Thursday",
-    "thu" => "Thursday",
-    "fri" => "Friday",
-    "sat" => "Saturday"
-  }
-
-  @vocal_days_long @days_map
-                   |> Map.values()
-                   |> Enum.uniq()
-                   |> Enum.map(&String.downcase/1)
-                   |> Enum.sort_by(&byte_size/1)
-                   |> Enum.reverse()
-                   |> Enum.map(&string/1)
-
-  @vocal_days_short @days_map
-                    |> Map.keys()
-                    |> Enum.uniq()
-                    |> Enum.map(&String.downcase/1)
-                    |> Enum.sort_by(&byte_size/1)
-                    |> Enum.reverse()
-                    |> Enum.map(&string/1)
   @date_separator [",", ".", "/", "-", " "]
 
   year4 =
@@ -340,7 +341,8 @@ defmodule DateTimeParser.Combinators do
     ])
 
   vocal_day =
-    (@vocal_days_long ++ @vocal_days_short)
+    @vocal_days
+    |> Enum.map(&string/1)
     |> choice()
     |> unwrap_and_tag(:vocal_day)
     |> label("vocal day spelled out")

mix.exs

@@ -59,6 +59,8 @@ defmodule DateTimeParser.MixProject do
   defp deps() do
     [
       {:exprof, "~> 0.2.0", only: :bench},
+      {:ex_cldr_dates_times, "~> 2.0", only: [:dev, :test, :bench]},
+      {:ex_cldr_calendars, "~> 1.17", only: [:dev, :test, :bench]},
       {:kday, "~> 1.0", runtime: false},
       {:benchee, "~> 1.0", only: [:bench], runtime: false},
       {:tz, "~> 0.24", only: [:dev, :test, :bench], runtime: false},

mix.lock

@@ -1,17 +1,25 @@
 %{
   "benchee": {:hex, :benchee, "1.1.0", "f3a43817209a92a1fade36ef36b86e1052627fd8934a8b937ac9ab3a76c43062", [:mix], [{:deep_merge, "~> 1.0", [hex: :deep_merge, repo: "hexpm", optional: false]}, {:statistex, "~> 1.0", [hex: :statistex, repo: "hexpm", optional: false]}], "hexpm", "7da57d545003165a012b587077f6ba90b89210fd88074ce3c60ce239eb5e6d93"},
   "bunt": {:hex, :bunt, "0.2.1", "e2d4792f7bc0ced7583ab54922808919518d0e57ee162901a16a1b6664ef3b14", [:mix], [], "hexpm", "a330bfb4245239787b15005e66ae6845c9cd524a288f0d141c148b02603777a5"},
-  "certifi": {:hex, :certifi, "2.6.1", "dbab8e5e155a0763eea978c913ca280a6b544bfa115633fa20249c3d396d9493", [:rebar3], [], "hexpm", "524c97b4991b3849dd5c17a631223896272c6b0af446778ba4675a1dff53bb7e"},
+  "certifi": {:hex, :certifi, "2.9.0", "6f2a475689dd47f19fb74334859d460a2dc4e3252a3324bd2111b8f0429e7e21", [:rebar3], [], "hexpm", "266da46bdb06d6c6d35fde799bcb28d36d985d424ad7c08b5bb48f5b5cdd4641"},
+  "cldr_utils": {:hex, :cldr_utils, "2.19.1", "5a7bcd2f2fd432c548e494e850bba8a9e838f1b10202f682ea1d9809d74eff31", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: true]}, {:certifi, "~> 2.5", [hex: :certifi, repo: "hexpm", optional: true]}, {:decimal, "~> 1.9 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}], "hexpm", "fbd10f79363e70f3d893ab21e195f444ca87c2c80120b5911761491da4489620"},
   "combine": {:hex, :combine, "0.10.0", "eff8224eeb56498a2af13011d142c5e7997a80c8f5b97c499f84c841032e429f", [:mix], [], "hexpm", "1b1dbc1790073076580d0d1d64e42eae2366583e7aecd455d1215b0d16f2451b"},
   "credo": {:hex, :credo, "1.6.7", "323f5734350fd23a456f2688b9430e7d517afb313fbd38671b8a4449798a7854", [:mix], [{:bunt, "~> 0.2.1", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "41e110bfb007f7eda7f897c10bf019ceab9a0b269ce79f015d54b0dcf4fc7dd3"},
+  "decimal": {:hex, :decimal, "2.0.0", "a78296e617b0f5dd4c6caf57c714431347912ffb1d0842e998e9792b5642d697", [:mix], [], "hexpm", "34666e9c55dea81013e77d9d87370fe6cb6291d1ef32f46a1600230b1d44f577"},
   "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},
+  "digital_token": {:hex, :digital_token, "0.4.0", "2ad6894d4a40be8b2890aad286ecd5745fa473fa5699d80361a8c94428edcd1f", [:mix], [{:cldr_utils, "~> 2.17", [hex: :cldr_utils, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "a178edf61d1fee5bb3c34e14b0f4ee21809ee87cade8738f87337e59e5e66e26"},
+  "ex_cldr": {:hex, :ex_cldr, "2.34.0", "50385e1445f33537bea7d24ca7525aa849ccabb3cf88ac41a6d183693116aba7", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: true]}, {:certifi, "~> 2.5", [hex: :certifi, repo: "hexpm", optional: true]}, {:cldr_utils, "~> 2.18", [hex: :cldr_utils, repo: "hexpm", optional: false]}, {:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:gettext, "~> 0.19", [hex: :gettext, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:nimble_parsec, "~> 0.5 or ~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: true]}], "hexpm", "d026df7d580424ab8daf0d908fd38d3c12e0a63962b495b7faeabd66ab072588"},
+  "ex_cldr_calendars": {:hex, :ex_cldr_calendars, "1.21.0", "5f3c71a145926cfa7f8691aa3566921957543f635ec345e52282c613e8985ba8", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:ex_cldr_lists, "~> 2.10", [hex: :ex_cldr_lists, repo: "hexpm", optional: true]}, {:ex_cldr_numbers, "~> 2.25", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:ex_cldr_units, "~> 3.12", [hex: :ex_cldr_units, repo: "hexpm", optional: true]}, {:ex_doc, "~> 0.21", [hex: :ex_doc, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "8ce8737b70f9c36828324995f96464a1a4c87cf2f76e5868e20662ca31c4098f"},
+  "ex_cldr_currencies": {:hex, :ex_cldr_currencies, "2.14.2", "354b48134faa011d58ae2e89be69b7de607d81fcc74c7ac684c5fb77b20186f5", [:mix], [{:ex_cldr, "~> 2.27", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "c970533103cdc97b1dedc2fead2209c0f5ae0aee0f1e504fdea5be5ee1466cd1"},
+  "ex_cldr_dates_times": {:hex, :ex_cldr_dates_times, "2.13.1", "bab1284590528b410a8d2488673642f3e3d84c1fa3fa3fbe91569ac4a5016e43", [:mix], [{:calendar_interval, "~> 0.2", [hex: :calendar_interval, repo: "hexpm", optional: true]}, {:ex_cldr_calendars, "~> 1.18", [hex: :ex_cldr_calendars, repo: "hexpm", optional: false]}, {:ex_cldr_numbers, "~> 2.28", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "b3d49035642c6ab7ed8f0f565524cd10d3b25dc57df3edd8ceba5e5c2caa730c"},
+  "ex_cldr_numbers": {:hex, :ex_cldr_numbers, "2.28.0", "506f5d36a2b72a21bbcb6e55dfdc5c3ff7f1c07d65e516461125158d10661beb", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:digital_token, "~> 0.3 or ~> 1.0", [hex: :digital_token, repo: "hexpm", optional: false]}, {:ex_cldr, "~> 2.34", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:ex_cldr_currencies, ">= 2.14.2", [hex: :ex_cldr_currencies, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "83342ff668aedf3aa5c54b048ce1da0f91317b6596b14880a5f87d45cd1c49d2"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.31", "a93921cdc6b9b869f519213d5bc79d9e218ba768d7270d46fdcf1c01bacff9e2", [:mix], [], "hexpm", "317d367ee0335ef037a87e46c91a2269fef6306413f731e8ec11fc45a7efd059"},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "ex_doc": {:hex, :ex_doc, "0.29.2", "dfa97532ba66910b2a3016a4bbd796f41a86fc71dd5227e96f4c8581fdf0fdf0", [:mix], [{:earmark_parser, "~> 1.4.19", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "6b5d7139eda18a753e3250e27e4a929f8d2c880dd0d460cb9986305dea3e03af"},
   "exprintf": {:hex, :exprintf, "0.2.1", "b7e895dfb00520cfb7fc1671303b63b37dc3897c59be7cbf1ae62f766a8a0314", [:mix], [], "hexpm", "20a0e8c880be90e56a77fcc82533c5d60c643915c7ce0cc8aa1e06ed6001da28"},
   "exprof": {:hex, :exprof, "0.2.4", "13ddc0575a6d24b52e7c6809d2a46e9ad63a4dd179628698cdbb6c1f6e497c98", [:mix], [{:exprintf, "~> 0.2", [hex: :exprintf, repo: "hexpm", optional: false]}], "hexpm", "0884bcb66afc421c75d749156acbb99034cc7db6d3b116c32e36f32551106957"},
   "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
-  "hackney": {:hex, :hackney, "1.17.4", "99da4674592504d3fb0cfef0db84c3ba02b4508bae2dff8c0108baa0d6e0977c", [:rebar3], [{:certifi, "~>2.6.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "de16ff4996556c8548d512f4dbe22dd58a587bf3332e7fd362430a7ef3986b16"},
+  "hackney": {:hex, :hackney, "1.18.1", "f48bf88f521f2a229fc7bae88cf4f85adc9cd9bcf23b5dc8eb6a1788c662c4f6", [:rebar3], [{:certifi, "~>2.9.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "a4ecdaff44297e9b5894ae499e9a070ea1888c84afdd1fd9b7b2bc384950128e"},
   "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
   "jason": {:hex, :jason, "1.4.0", "e855647bc964a44e2f67df589ccf49105ae039d4179db7f6271dfd3843dc27e6", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "79a3791085b2a0f743ca04cec0f7be26443738779d09302e01318f97bdb82121"},
   "kday": {:hex, :kday, "1.0.1", "c9e6d4d4677c1213b23a3e5f478993a55a9c80ca3e1d9f03f7d89f958553d1ee", [:mix], [{:ex_doc, "~> 0.21", [hex: :ex_doc, repo: "hexpm", optional: true]}], "hexpm", "38b9b9a0cbd9973fafc6d7bb78566c9922b32c596c39ebb720687d6a6c55373f"},
@@ -20,11 +28,11 @@
   "makeup_erlang": {:hex, :makeup_erlang, "0.1.1", "3fcb7f09eb9d98dc4d208f49cc955a34218fc41ff6b84df7c75b3e6e533cc65f", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "174d0809e98a4ef0b3309256cbf97101c6ec01c4ab0b23e926a9e17df2077cbb"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
-  "nimble_parsec": {:git, "https://github.com/dashbitco/nimble_parsec.git", "dc1e2278349f4263eee2babd4432b30cff0e9210", []},
+  "nimble_parsec": {:git, "https://github.com/dashbitco/nimble_parsec.git", "72678dd0c1df07d80c0a851b952986f8972806b5", []},
   "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
   "statistex": {:hex, :statistex, "1.0.0", "f3dc93f3c0c6c92e5f291704cf62b99b553253d7969e9a5fa713e5481cd858a5", [:mix], [], "hexpm", "ff9d8bee7035028ab4742ff52fc80a2aa35cece833cf5319009b52f1b5a86c27"},
   "tz": {:hex, :tz, "0.24.0", "a9073f152c5a9d0abeafde57150cd61d9f11faa7fa3710a20e8487ce05c76cee", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: true]}, {:mint, "~> 1.4", [hex: :mint, repo: "hexpm", optional: true]}], "hexpm", "5c08671bb10a56e09371106b08f5c9192449bb22e94a51de063c8c1317317027"},
-  "tzdata": {:hex, :tzdata, "1.1.0", "72f5babaa9390d0f131465c8702fa76da0919e37ba32baa90d93c583301a8359", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "18f453739b48d3dc5bcf0e8906d2dc112bb40baafe2c707596d89f3c8dd14034"},
+  "tzdata": {:hex, :tzdata, "1.1.1", "20c8043476dfda8504952d00adac41c6eda23912278add38edc140ae0c5bcc46", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "a69cec8352eafcd2e198dea28a34113b60fdc6cb57eb5ad65c10292a6ba89787"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
 }

test/date_time_parser_test.exs

@@ -780,4 +780,32 @@ defmodule DateTimeParserTest do
       test_date_error("2017-#{@month}-31", ~s|Could not parse "2017-#{@month}-31"|)
     end
   end
+
+  describe "translated" do
+    setup do
+      Application.put_env(:date_time_parser, :cldr_backend, DateTime.Cldr)
+
+      on_exit(fn ->
+        Application.delete_env(:date_time_parser, :cldr_backend)
+      end)
+    end
+
+    test_parsing(" 01 Lut 2013", "2013-02-01")
+    test_parsing(" 03 Sty 2013 10:15:26 -0800", "2013-01-03T18:15:26Z", to_utc: true)
+    test_parsing(" 11 Lut 2013", "2013-02-11")
+    test_parsing(" 11 Sty 2013 13:26:55 -0800", "2013-01-11T21:26:55Z", to_utc: true)
+    test_parsing(" 24 Wrz 2013", "2013-09-24")
+    test_parsing("01-Lut-18", "2018-02-01")
+    test_parsing("01-Lip", "2019-07-01", assume_date: ~D[2019-01-05])
+    test_parsing("01-Lip-18", "2018-07-01")
+    test_parsing("Sobota 01 Styczeń 2017 09:22:46 AM", "2017-01-01T09:22:46")
+    test_parsing("Sob 01 Sty 2017 10:11:02 PM", "2017-01-01T22:11:02")
+    test_parsing("Czw Sie 09 2018 17:13:43 GMT+0000 (UTC)", "2018-08-09T17:13:43Z")
+    test_parsing("Czw Lut 08 00:24:33 2018", "2018-02-08T00:24:33")
+    test_parsing("Czw Lip  5 12:19:56 2018", "2018-07-05T12:19:56")
+    test_parsing("Wto Lip 31 06:44:39 2018", "2018-07-31T06:44:39")
+    test_parsing("Czwartek 30 Sierpień 2018 11:31:18 AM", "2018-08-30T11:31:18")
+    test_parsing("Wtorek 11 Lipiec 2017 1:43:46 PM", "2017-07-11T13:43:46")
+    test_parsing(~s|"Wtorek, Listopad 29, 2016"|, "2016-11-29")
+  end
 end

test/support/cldr.ex

@@ -0,0 +1,9 @@
+defmodule DateTimeParser.Cldr do
+  @moduledoc """
+  Cldr module used in tests
+  """
+  use Cldr,
+    locales: ["en", "pl"],
+    default_locale: "en",
+    providers: [Cldr.Calendar, Cldr.DateTime, Cldr.Number]
+end