Merge branch 'nil-bio-emojis' into 'develop'

add nil clause for Formatter.get_emoji/1 to return an empty result

Closes #274

See merge request pleroma/pleroma!315

lib/pleroma/formatter.ex

@@ -158,10 +158,12 @@ def emojify(text, emoji) do
     end)
   end
 
-  def get_emoji(text) do
+  def get_emoji(text) when is_binary(text) do
     Enum.filter(@emoji, fn {emoji, _} -> String.contains?(text, ":#{emoji}:") end)
   end
 
+  def get_emoji(_), do: []
+
   def get_custom_emoji() do
     @emoji
   end

test/formatter_test.exs

@@ -214,4 +214,14 @@ test "it returns the emoji used in the text" do
 
     assert Formatter.get_emoji(text) == [{"moominmamma", "/finmoji/128px/moominmamma-128.png"}]
   end
+
+  test "it returns a nice empty result when no emojis are present" do
+    text = "I love moominamma"
+    assert Formatter.get_emoji(text) == []
+  end
+
+  test "it doesn't die when text is absent" do
+    text = nil
+    assert Formatter.get_emoji(text) == []
+  end
 end