feat: add support parsing scientific notation (#240)

elixirmoney · Feb 26, 2025 · 15b3fb0 · 15b3fb0
1 parent eee8550
commit 15b3fb0
Show file tree

Hide file tree

Showing 2 changed files with 18 additions and 0 deletions.
diff --git a/lib/money.ex b/lib/money.ex
@@ -210,6 +210,15 @@ defmodule Money do
   defp prepare_parse_string(["9" | tail], delimiter, acc),
     do: prepare_parse_string(tail, delimiter, ["9" | acc])
 
+  defp prepare_parse_string(["e" | tail], delimiter, acc),
+    do: prepare_parse_string(tail, delimiter, ["e" | acc])
+
+  defp prepare_parse_string(["E" | tail], delimiter, acc),
+    do: prepare_parse_string(tail, delimiter, ["e" | acc])
+
+  defp prepare_parse_string(["+" | tail], delimiter, acc),
+    do: prepare_parse_string(tail, delimiter, ["+" | acc])
+
   defp prepare_parse_string([delimiter | tail], delimiter, acc),
     do: prepare_parse_string(tail, delimiter, ["." | acc])
 

diff --git a/test/money_test.exs b/test/money_test.exs
@@ -50,6 +50,15 @@ defmodule MoneyTest do
     assert Money.parse(",25", :EUR, separator: ".", delimiter: ",") == {:ok, eur(25)}
     assert Money.parse("-,25", :EUR, separator: ".", delimiter: ",") == {:ok, eur(-25)}
 
+    assert Money.parse("0E+1", :USD) == {:ok, usd(0)}
+    assert Money.parse("1000.0e1", :USD) == {:ok, usd(1_000_000)}
+    assert Money.parse("1000.0E1", :USD) == {:ok, usd(1_000_000)}
+    assert Money.parse("1000.0e+1", :USD) == {:ok, usd(1_000_000)}
+    assert Money.parse("1000.0E+1", :USD) == {:ok, usd(1_000_000)}
+    assert Money.parse("1000.0e-1", :USD) == {:ok, usd(10000)}
+    assert Money.parse("1000.0E-1", :USD) == {:ok, usd(10000)}
+    assert Money.parse("0.5e-1", :USD) == {:ok, usd(5)}
+
     assert Money.parse("1000.0", :WRONG) == :error
   end