Ba form

lib/ika_conjugations/verb.rb

@@ -89,6 +89,10 @@ module IkaConjugations
       def potential_starter
         stem + "られる"
       end
+
+      def ba
+        stem + "れば"
+      end
     end
 
     class Godan < Verb
@@ -144,6 +148,10 @@ module IkaConjugations
       def volitional
         all_but_last_character + last_character("o") + "う"
       end
+
+      def ba
+        all_but_last_character + last_character("e") + "ば"
+      end
     end
 
     class Suru < Verb
@@ -166,6 +174,10 @@ module IkaConjugations
       def potential_starter
         prefix + "できる"
       end
+
+      def ba
+        prefix + "すれば"
+      end
     end
 
     class Kuru < Verb
@@ -188,6 +200,10 @@ module IkaConjugations
       def potential_starter
         negative_stem + "られる"
       end
+
+      def ba
+        prefix + KanaKanji.new("く", "来") + "れば"
+      end
     end
   end
 end

test/ika_conjugations/test_verb.rb

@@ -238,5 +238,16 @@ module IkaConjugations
       assert_equal "あろう", @aru.volitional.kana
       assert_equal "あおう", @au.volitional.kana
     end
+
+    def test_ba
+      assert_equal "見れば", @miru.ba.kanji
+      assert_equal "飲めば", @nomu.ba.kanji
+      assert_equal "すれば", @suru.ba.kanji
+      assert_equal "勉強すれば", @benkyousuru.ba.kanji
+      assert_equal "来れば", @kuru.ba.kanji
+      assert_equal "連れて来れば", @tsuretekuru.ba.kanji
+      assert_equal "あれば", @aru.ba.kanji
+      assert_equal "会えば", @au.ba.kanji
+    end
   end
 end