Alias to gigabyte, show base-unit decomposition on conversion errors, and download required locales before tests

Author: kipcole9

lib/unity/aliases.ex

@@ -198,6 +198,7 @@ defmodule Unity.Aliases do
     "kB" => "kilobyte",
     "MB" => "megabyte",
     "GB" => "gigabyte",
+    "gb" => "gigabyte",
     "TB" => "terabyte",
     "b" => "bit",
     "kb" => "kilobit",

lib/unity/interpreter.ex

@@ -314,6 +314,9 @@ defmodule Unity.Interpreter do
       {:ok, result} ->
         {:ok, result}
 
+      {:error, %Localize.UnitConversionError{reason: :not_convertible} = exception} ->
+        {:error, Exception.message(exception) <> base_unit_diagnostic(exception.from, exception.to)}
+
       {:error, exception} when is_exception(exception) ->
         {:error, Exception.message(exception)}
 
@@ -327,6 +330,20 @@ defmodule Unity.Interpreter do
      "cannot convert bare number #{number} to #{inspect(target_name)} — specify a source unit"}
   end
 
+  # Appends the base-unit decomposition of each side when a conversion is
+  # rejected. Helps the user see *why* the dimensions don't match — useful
+  # when an alias resolves to something other than they expected.
+  defp base_unit_diagnostic(from, to) do
+    with {:ok, from_base} <- Localize.Unit.BaseUnit.base_unit(from),
+         {:ok, to_base} <- Localize.Unit.BaseUnit.base_unit(to),
+         true <- from_base != to_base do
+      "\n  #{inspect(from)} reduces to #{inspect(from_base)}." <>
+        "\n  #{inspect(to)} reduces to #{inspect(to_base)}."
+    else
+      _ -> ""
+    end
+  end
+
   # ── Measurement system conversion ──
 
   defp convert_to_system(%Localize.Unit{} = unit, system, environment) do

mix.exs

@@ -16,7 +16,14 @@ defmodule Unity.MixProject do
       package: package(),
       start_permanent: Mix.env() == :prod,
       escript: escript(),
-      deps: deps()
+      deps: deps(),
+      aliases: aliases()
+    ]
+  end
+
+  defp aliases do
+    [
+      test: ["localize.download_locales en de ja", "test"]
     ]
   end
 

mix.lock

@@ -1,19 +1,19 @@
 %{
-  "decimal": {:hex, :decimal, "2.3.0", "3ad6255aa77b4a3c4f818171b12d237500e63525c2fd056699967a3e7ea20f62", [:mix], [], "hexpm", "a4d66355cb29cb47c3cf30e71329e58361cfcb37c34235ef3bf1d7bf3773aeac"},
+  "decimal": {:hex, :decimal, "3.1.0", "9ede268cff827e6f0c4fb1b34747c82630dce5d7b877dfb22ec8f0cb25855fce", [:mix], [], "hexpm", "e8b3efb3bb3a13cb5e4268ffe128569067b1972e9dee013537c71a5b073168f9"},
   "dialyxir": {:hex, :dialyxir, "1.4.7", "dda948fcee52962e4b6c5b4b16b2d8fa7d50d8645bbae8b8685c3f9ecb7f5f4d", [:mix], [{:erlex, ">= 0.2.8", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "b34527202e6eb8cee198efec110996c25c5898f43a4094df157f8d28f27d9efe"},
   "earmark_parser": {:hex, :earmark_parser, "1.4.44", "f20830dd6b5c77afe2b063777ddbbff09f9759396500cdbe7523efd58d7a339c", [:mix], [], "hexpm", "4778ac752b4701a5599215f7030989c989ffdc4f6df457c5f36938cc2d2a2750"},
   "erlex": {:hex, :erlex, "0.2.8", "cd8116f20f3c0afe376d1e8d1f0ae2452337729f68be016ea544a72f767d9c12", [:mix], [], "hexpm", "9d66ff9fedf69e49dc3fd12831e12a8a37b76f8651dd21cd45fcf5561a8a7590"},
-  "ex_doc": {:hex, :ex_doc, "0.40.1", "67542e4b6dde74811cfd580e2c0149b78010fd13001fda7cfeb2b2c2ffb1344d", [:mix], [{:earmark_parser, "~> 1.4.44", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "bcef0e2d360d93ac19f01a85d58f91752d930c0a30e2681145feea6bd3516e00"},
+  "ex_doc": {:hex, :ex_doc, "0.40.2", "f50edec428c4b0a457a167de42414c461122a3585a99515a69d09fff19e5597e", [:mix], [{:earmark_parser, "~> 1.4.44", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "4fa426e2beb47854a162e2c488727fdec51cd4692e319b23810c2804cb1a40fe"},
   "expo": {:hex, :expo, "1.1.1", "4202e1d2ca6e2b3b63e02f69cfe0a404f77702b041d02b58597c00992b601db5", [:mix], [], "hexpm", "5fb308b9cb359ae200b7e23d37c76978673aa1b06e2b3075d814ce12c5811640"},
   "gettext": {:hex, :gettext, "1.0.2", "5457e1fd3f4abe47b0e13ff85086aabae760497a3497909b8473e0acee57673b", [:mix], [{:expo, "~> 0.5.1 or ~> 1.0", [hex: :expo, repo: "hexpm", optional: false]}], "hexpm", "eab805501886802071ad290714515c8c4a17196ea76e5afc9d06ca85fb1bfeb3"},
-  "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"},
-  "localize": {:hex, :localize, "0.9.0", "01387f6f212434c4e199361a03b72085771163eea47e4916381871c2ccffa10f", [:mix], [{:decimal, "~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: true]}, {:gettext, "~> 1.0", [hex: :gettext, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "9117eb6e4b2eb97033f4e4d60a84ffc7736f75e27d8886fb8043bd6479b61570"},
-  "lumis": {:hex, :lumis, "0.3.0", "41b8dee31b25f02b7bb5c2bfb663caf4b28cde852eefc7f478ed4ad1b0537f0a", [:mix], [{:nimble_options, "~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:rustler, "~> 0.29", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.6", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "4850729521da4115d2feb9bbca5369f259e63ea8674f241d2492f6371abfa856"},
+  "jason": {:hex, :jason, "1.4.5", "2e3a008590b0b8d7388c20293e9dcc9cf3e5d642fd2a114e4cbbb52e595d940a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0 or ~> 3.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "b0c823996102bcd0239b3c2444eb00409b72f6a140c1950bc8b457d836b30684"},
+  "localize": {:hex, :localize, "0.28.0", "8c7a1de89abe99079a8418e99286722abc8a9baa13f08379089e4ca5db2a1c10", [:mix], [{:decimal, "~> 2.0 or ~> 3.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: true]}, {:gettext, "~> 1.0", [hex: :gettext, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "fd9a31f829881805f479f90922a86f2af0c3682725cafbc95df2ae64e7513d94"},
+  "lumis": {:hex, :lumis, "0.5.0", "1d505ff56fede334cf0de78bace0b00433edddb848f4b1affbcc0dc2234cda2a", [:mix], [{:nimble_options, "~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:rustler, "~> 0.29", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.6", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "142a7aae2a22169a389cf70a6a71426092bc541abe699aab9eef31b36e972cb2"},
   "makeup": {:hex, :makeup, "1.2.1", "e90ac1c65589ef354378def3ba19d401e739ee7ee06fb47f94c687016e3713d1", [:mix], [{:nimble_parsec, "~> 1.4", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "d36484867b0bae0fea568d10131197a4c2e47056a6fbe84922bf6ba71c8d17ce"},
   "makeup_elixir": {:hex, :makeup_elixir, "1.0.1", "e928a4f984e795e41e3abd27bfc09f51db16ab8ba1aebdba2b3a575437efafc2", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "7284900d412a3e5cfd97fdaed4f5ed389b8f2b4cb49efc0eb3bd10e2febf9507"},
-  "makeup_erlang": {:hex, :makeup_erlang, "1.0.3", "4252d5d4098da7415c390e847c814bad3764c94a814a0b4245176215615e1035", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "953297c02582a33411ac6208f2c6e55f0e870df7f80da724ed613f10e6706afd"},
+  "makeup_erlang": {:hex, :makeup_erlang, "1.1.0", "835f7e60792e08824cda445639555d7bf1bbbddb1b60b306e33cb6f6db24dc74", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "1cd6780fb1dd1a03979abaed0fe82712b0625118fd5257d3ebbf73f960c73c3c"},
   "marcli": {:hex, :marcli, "0.3.1", "183d2c674e416cdd90a5b395d60d573ad5d4381ec18239de2b2cfa249d926d7c", [:mix], [{:color, "~> 0.3", [hex: :color, repo: "hexpm", optional: true]}, {:makeup, "~> 1.2", [hex: :makeup, repo: "hexpm", optional: true]}, {:mdex, "~> 0.11", [hex: :mdex, repo: "hexpm", optional: false]}], "hexpm", "731383f9b9bdfd13affe2d43a3cef441440c4a9182cb59724478e51b85e2c7d4"},
-  "mdex": {:hex, :mdex, "0.12.1", "ba0c793837ccaf6ad7a041c3dc576edc12e2f9030eb620d693f0a32ac1707c61", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:lumis, "~> 0.1", [hex: :lumis, repo: "hexpm", optional: false]}, {:nimble_options, "~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}, {:phoenix_live_view, "~> 1.0", [hex: :phoenix_live_view, repo: "hexpm", optional: true]}, {:rustler, "~> 0.32", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.7", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "1671450ae273b6ef9da617c2043b589fccac6993c5e0174118c4a6870b09049e"},
+  "mdex": {:hex, :mdex, "0.12.2", "e5f7a62543a7580f3ff55dc2f2953b0d0e74b4327d77d3710946eb1bc9a9b569", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:lumis, "~> 0.1", [hex: :lumis, repo: "hexpm", optional: false]}, {:nimble_options, "~> 1.0", [hex: :nimble_options, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}, {:phoenix_live_view, "~> 1.0", [hex: :phoenix_live_view, repo: "hexpm", optional: true]}, {:rustler, "~> 0.32", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.7", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "72cfea060dc9135d66149feb506c13db76da7d3303f3276493bb34482df8f340"},
   "nimble_options": {:hex, :nimble_options, "1.1.1", "e3a492d54d85fc3fd7c5baf411d9d2852922f66e69476317787a7b2bb000a61b", [:mix], [], "hexpm", "821b2470ca9442c4b6984882fe9bb0389371b8ddec4d45a9504f00a66f650b44"},
   "nimble_parsec": {:hex, :nimble_parsec, "1.4.2", "8efba0122db06df95bfaa78f791344a89352ba04baedd3849593bfce4d0dc1c6", [:mix], [], "hexpm", "4b21398942dda052b403bbe1da991ccd03a053668d147d53fb8c4e0efe09c973"},
   "rustler_precompiled": {:hex, :rustler_precompiled, "0.9.0", "3a052eda09f3d2436364645cc1f13279cf95db310eb0c17b0d8f25484b233aa0", [:mix], [{:rustler, "~> 0.23", [hex: :rustler, repo: "hexpm", optional: true]}], "hexpm", "471d97315bd3bf7b64623418b3693eedd8e47de3d1cb79a0ac8f9da7d770d94c"},