Remove `Struct` defined check in test.

mrbgems/mruby-struct/test/struct.rb

 ##
 # Struct ISO Test
 
-if Object.const_defined?(:Struct)
-  assert('Struct', '15.2.18') do
-    Struct.class == Class
-  end
+assert('Struct', '15.2.18') do
+  Struct.class == Class
+end
 
-  assert('Struct superclass', '15.2.18.2') do
-    Struct.superclass == Object
-  end
+assert('Struct superclass', '15.2.18.2') do
+  Struct.superclass == Object
+end
 
-  assert('Struct.new', '15.2.18.3.1') do
-    c = Struct.new(:m1, :m2)
-    c.superclass == Struct and
-      c.members == [:m1,:m2]
-  end
+assert('Struct.new', '15.2.18.3.1') do
+  c = Struct.new(:m1, :m2)
+  c.superclass == Struct and
+    c.members == [:m1,:m2]
+end
 
-  # Check crash bug with Struc.new and no params.
-  assert('Struct.new', '15.2.18.3.1') do
-     c = Struct.new()
-     c.superclass == Struct and c.members == []
-  end
+# Check crash bug with Struc.new and no params.
+assert('Struct.new', '15.2.18.3.1') do
+  c = Struct.new()
+  c.superclass == Struct and c.members == []
+end
 
-  assert('Struct#==', '15.2.18.4.1') do
-    c = Struct.new(:m1, :m2)
-    cc1 = c.new(1,2)
-    cc2 = c.new(1,2)
-    cc1 == cc2
-  end
+assert('Struct#==', '15.2.18.4.1') do
+  c = Struct.new(:m1, :m2)
+  cc1 = c.new(1,2)
+  cc2 = c.new(1,2)
+  cc1 == cc2
+end
 
-  assert('Struct#[]', '15.2.18.4.2') do
-    c = Struct.new(:m1, :m2)
-    cc = c.new(1,2)
-    cc[:m1] == 1 and cc["m2"] == 2
-  end
+assert('Struct#[]', '15.2.18.4.2') do
+  c = Struct.new(:m1, :m2)
+  cc = c.new(1,2)
+  cc[:m1] == 1 and cc["m2"] == 2
+end
 
-  assert('Struct#[]=', '15.2.18.4.3') do
-    c = Struct.new(:m1, :m2)
-    cc = c.new(1,2)
-    cc[:m1] = 3
-    cc[:m1] == 3
-  end
+assert('Struct#[]=', '15.2.18.4.3') do
+  c = Struct.new(:m1, :m2)
+  cc = c.new(1,2)
+  cc[:m1] = 3
+  cc[:m1] == 3
+end
 
-  assert('Struct#each', '15.2.18.4.4') do
-    c = Struct.new(:m1, :m2)
-    cc = c.new(1,2)
-    a = []
-    cc.each{|x|
-      a << x
-    }
-    a[0] == 1 and a[1] == 2
-  end
+assert('Struct#each', '15.2.18.4.4') do
+  c = Struct.new(:m1, :m2)
+  cc = c.new(1,2)
+  a = []
+  cc.each{|x|
+    a << x
+  }
+  a[0] == 1 and a[1] == 2
+end
 
-  assert('Struct#each_pair', '15.2.18.4.5') do
-    c = Struct.new(:m1, :m2)
-    cc = c.new(1,2)
-    a = []
-    cc.each_pair{|k,v|
-      a << [k,v]
-    }
-    a[0] == [:m1, 1] and a[1] == [:m2, 2]
-  end
+assert('Struct#each_pair', '15.2.18.4.5') do
+  c = Struct.new(:m1, :m2)
+  cc = c.new(1,2)
+  a = []
+  cc.each_pair{|k,v|
+    a << [k,v]
+  }
+  a[0] == [:m1, 1] and a[1] == [:m2, 2]
+end
 
-  assert('Struct#members', '15.2.18.4.6') do
-    c = Struct.new(:m1, :m2)
-    cc = c.new(1,2)
-    cc.members == [:m1,:m2]
-  end
+assert('Struct#members', '15.2.18.4.6') do
+  c = Struct.new(:m1, :m2)
+  cc = c.new(1,2)
+  cc.members == [:m1,:m2]
+end
 
-  assert('Struct#select', '15.2.18.4.7') do
-    c = Struct.new(:m1, :m2)
-    cc = c.new(1,2)
-    cc.select{|v| v % 2 == 0} == [2]
-  end
+assert('Struct#select', '15.2.18.4.7') do
+  c = Struct.new(:m1, :m2)
+  cc = c.new(1,2)
+  cc.select{|v| v % 2 == 0} == [2]
+end
 
-  assert('large struct') do
-    c = Struct.new(:m1, :m2, :m3, :m4, :m5, :m6, :m7, :m8, :m9, :m10, :m11, :m12, :m13)
-    cc = c.new(1,2,3,4,5,6,7,8,9,10,11,12,13)
-    assert_equal 1, cc.m1
-    assert_equal 2, cc.m2
-    assert_equal 3, cc.m3
-    assert_equal 4, cc.m4
-    assert_equal 5, cc.m5
-    assert_equal 6, cc.m6
-    assert_equal 7, cc.m7
-    assert_equal 8, cc.m8
-    assert_equal 9, cc.m9
-    assert_equal 10, cc.m10
-    assert_equal 13, cc.m13
-
-    cc.m13 = 'test'
-    assert_equal 'test', cc.m13
-
-    assert_raise(NoMethodError) { cc.m14 }
-  end
+assert('large struct') do
+  c = Struct.new(:m1, :m2, :m3, :m4, :m5, :m6, :m7, :m8, :m9, :m10, :m11, :m12, :m13)
+  cc = c.new(1,2,3,4,5,6,7,8,9,10,11,12,13)
+  assert_equal 1, cc.m1
+  assert_equal 2, cc.m2
+  assert_equal 3, cc.m3
+  assert_equal 4, cc.m4
+  assert_equal 5, cc.m5
+  assert_equal 6, cc.m6
+  assert_equal 7, cc.m7
+  assert_equal 8, cc.m8
+  assert_equal 9, cc.m9
+  assert_equal 10, cc.m10
+  assert_equal 13, cc.m13
+
+  cc.m13 = 'test'
+  assert_equal 'test', cc.m13
+
+  assert_raise(NoMethodError) { cc.m14 }
+end
 
-  assert('wrong struct arg count') do
-    c = Struct.new(:m1)
-    assert_raise ArgumentError do
-      cc = c.new(1,2,3)
-    end
+assert('wrong struct arg count') do
+  c = Struct.new(:m1)
+  assert_raise ArgumentError do
+    cc = c.new(1,2,3)
   end
+end
 
-  assert('struct inspect') do
-    c = Struct.new(:m1, :m2, :m3, :m4, :m5)
-    cc = c.new(1,2,3,4,5)
-    assert_equal "#<struct #{c.inspect} m1=1, m2=2, m3=3, m4=4, m5=5>", cc.inspect
-  end
+assert('struct inspect') do
+  c = Struct.new(:m1, :m2, :m3, :m4, :m5)
+  cc = c.new(1,2,3,4,5)
+  assert_equal "#<struct #{c.inspect} m1=1, m2=2, m3=3, m4=4, m5=5>", cc.inspect
+end
 
-  assert('Struct#length, Struct#size') do
-    s = Struct.new(:f1, :f2).new(0, 1)
-    assert_equal 2, s.size
-    assert_equal 2, s.length
-  end
+assert('Struct#length, Struct#size') do
+  s = Struct.new(:f1, :f2).new(0, 1)
+  assert_equal 2, s.size
+  assert_equal 2, s.length
 end