add tests for insert, intern, length, oct, replace, reverse.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14328 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_m17n.rb

@@ -836,7 +836,7 @@ class TestM17N < Test::Unit::TestCase
   end
 
   def test_str_assign_len
-    combination(STRINGS, STRINGS, -2..2, 0..2) {|s1, s2, i, len|
+    combination(STRINGS, -2..2, 0..2, STRINGS) {|s1, i, len, s2|
       t = s1.dup
       if is_ascii_only?(s1) || is_ascii_only?(s2) || s1.encoding == s2.encoding
         if i < -s1.length || s1.length < i
@@ -1302,6 +1302,67 @@ class TestM17N < Test::Unit::TestCase
     }
   end
 
+  def test_str_insert
+    combination(STRINGS, -2..2, STRINGS) {|s1, nth, s2|
+      t1 = s1.dup
+      t2 = s1.dup
+      begin
+        t1[nth, 0] = s2
+      rescue ArgumentError, IndexError => e1
+      end
+      begin
+        t2.insert(nth, s2)
+      rescue ArgumentError, IndexError => e2
+      end
+      assert_equal(t1, t2, "t=#{encdump s1}; t.insert(#{nth},#{encdump s2}); t")
+      assert_equal(e1.class, e2.class, "begin #{encdump s1}.insert(#{nth},#{encdump s2}); rescue ArgumentError, IndexError => e; e end")
+    }
+  end
+
+  def test_str_intern
+    STRINGS.each {|s|
+      if /\0/ =~ a(s)
+        assert_raise(ArgumentError) { s.intern }
+      else
+        sym = s.intern
+        assert_equal(s, sym.to_s)
+      end
+    }
+  end
+
+  def test_str_length
+    STRINGS.each {|s|
+      assert_operator(s.length, :<=, s.bytesize)
+    }
+  end
+
+  def test_str_oct
+    STRINGS.each {|s|
+      t = s.oct
+      t2 = a(s)[/\A[0-9a-fA-FxXbB]*/].oct
+      assert_equal(t2, t)
+    }
+  end
+
+  def test_str_replace
+    combination(STRINGS, STRINGS) {|s1, s2|
+      t = s1.dup
+      t.replace s2
+      assert_equal(s2, t)
+      assert_equal(s2.encoding, t.encoding)
+    }
+  end
+
+  def test_str_reverse
+    STRINGS.each {|s|
+      t = s.reverse
+      assert_equal(s.bytesize, t.bytesize)
+      if s.valid_encoding?
+        assert_equal(s, t.reverse)
+      end
+    }
+  end
+
   def test_tr
     s = "\x81\x41".force_encoding("shift_jis")
     assert_equal(s.tr("A", "B"), s)