From f37105af5e3cd341920a37e12443b632e9bed504 Mon Sep 17 00:00:00 2001
From: Michael Miller <icy.arctic.fox@gmail.com>
Date: Thu, 28 Feb 2019 20:14:03 -0700
Subject: [PATCH] Add padding to pairs to right-align key

---
 src/spectator/formatting/match_data_value_pair.cr | 3 ++-
 src/spectator/formatting/match_data_values.cr     | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/spectator/formatting/match_data_value_pair.cr b/src/spectator/formatting/match_data_value_pair.cr
index c9cc3f6..46823c3 100644
--- a/src/spectator/formatting/match_data_value_pair.cr
+++ b/src/spectator/formatting/match_data_value_pair.cr
@@ -2,11 +2,12 @@ module Spectator::Formatting
   # A single key-value pair from the `Spectator::Matchers::MatchData#value` method.
   private struct MatchDataValuePair(T)
     # Creates the pair formatter.
-    def initialize(@key : Symbol, @value : T)
+    def initialize(@key : Symbol, @value : T, @padding : Int32)
     end
 
     # Appends the pair to the output.
     def to_s(io)
+      @padding.times { io << ' ' }
       io << @key
       io << ": "
       @value.inspect(io)
diff --git a/src/spectator/formatting/match_data_values.cr b/src/spectator/formatting/match_data_values.cr
index b1a584f..d8d6301 100644
--- a/src/spectator/formatting/match_data_values.cr
+++ b/src/spectator/formatting/match_data_values.cr
@@ -4,14 +4,19 @@ module Spectator::Formatting
   private struct MatchDataValues(T)
     include Enumerable(MatchDataValuePair)
 
+    @max_key_length : Int32
+
     # Creates the values mapper.
     def initialize(@values : T)
+      @max_key_length = T.types.keys.map(&.to_s.size).max
     end
 
     # Yields pairs that can be printed to output.
     def each
       @values.each do |key, value|
-        yield MatchDataValuePair.new(key, value)
+        key_length = key.to_s.size
+        padding = @max_key_length - key_length
+        yield MatchDataValuePair.new(key, value, padding)
       end
     end
   end