add if statement test

spec/basic/step02_if_for_spec.rb

@@ -0,0 +1,66 @@
+require 'spec_helper'
+
+describe 'Step02IfForSpec' do
+  context 'if statement' do
+    # What string is sea variable at the method end?
+    # メソッド終了時の変数 sea の中身は？
+    it 'spec if basic' do
+      sea = 904
+      if sea >= 904
+        sea = 2001
+      end
+      log(sea)
+    end
+
+    # Same as the previous method question. (前のメソッドの質問と同じ)
+    it 'spec if else basic' do
+      sea = 904
+      if sea >= 904
+        sea = 2001
+      else
+        sea = 7
+      end
+      log(sea) # your answer? =>
+    end
+
+    # Same as the previous method question. (前のメソッドの質問と同じ)
+    it 'spec if elsif basic' do
+      sea = 904
+      if sea > 904
+        sea = 2001
+      elsif sea >= 904
+        sea = 7
+      elsif sea >= 903
+        sea = 8
+      else
+        sea = 9
+      end
+      log(sea) # your answer? =>
+    end
+
+    # Same as the previous method question. (前のメソッドの質問と同じ)
+    it 'spec if elsif nested' do
+      land = false
+      sea = 904
+      if sea > 904
+        sea = 2001
+      elsif land && sea >= 904
+        sea = 7
+      elsif sea >= 903 || land
+        sea = 8
+        if !land
+          land = true
+        elsif sea <= 903
+          sea += 1
+        end
+      else
+        sea = 9
+      end
+      if land
+        sea = 10
+      end
+      log(sea) # your answer? =>
+    end
+  end
+end
+