1 files changed, 41 insertions, 0 deletions
diff --git a/test/iconv/test_partial.rb b/test/iconv/test_partial.rb
new file mode 100644
index 0000000000..fb31c9e3e8
--- /dev/null
+++ b/test/iconv/test_partial.rb
@@ -0,0 +1,41 @@
+require File.join(File.dirname(__FILE__), "utils.rb")
+
+class TestIconv
+  def test_partial_ascii
+    c = Iconv.open(ASCII, ASCII)
+    ref = '[ruby-core:17092]'
+  rescue
+    return
+  else
+    assert_equal("abc", c.iconv("abc"))
+    assert_equal("c",   c.iconv("abc", 2),     "#{ref}: with start")
+    assert_equal("c",   c.iconv("abc", 2, 1),  "#{ref}: with start, length")
+    assert_equal("c",   c.iconv("abc", 2, 5),  "#{ref}: with start, longer length")
+    assert_equal("bc",  c.iconv("abc", -2),    "#{ref}: with nagative start")
+    assert_equal("b",   c.iconv("abc", -2, 1), "#{ref}: with nagative start, length")
+    assert_equal("bc",  c.iconv("abc", -2, 5), "#{ref}: with nagative start, longer length")
+    assert_equal("",    c.iconv("abc", 5),     "#{ref}: with OOB")
+    assert_equal("",    c.iconv("abc", 5, 2),  "#{ref}: with OOB, length")
+  ensure
+    c.close if c
+  end
+
+  def test_partial_euc2sjis
+    c = Iconv.open('SHIFT_JIS', 'EUC-JP')
+  rescue
+    return
+  else
+    assert_equal(SJIS_STR[0, 2],   c.iconv(EUCJ_STR, 0, 2))
+    assert_equal(SJIS_STR,         c.iconv(EUCJ_STR, 0, 20))
+    assert_equal(SJIS_STR[2..-1],  c.iconv(EUCJ_STR, 2))
+    assert_equal(SJIS_STR[2, 2],   c.iconv(EUCJ_STR, 2, 2))
+    assert_equal(SJIS_STR[2..-1],  c.iconv(EUCJ_STR, 2, 20))
+    assert_equal(SJIS_STR[-4..-1], c.iconv(EUCJ_STR, -4))
+    assert_equal(SJIS_STR[-4, 2],  c.iconv(EUCJ_STR, -4, 2))
+    assert_equal(SJIS_STR[-4..-1], c.iconv(EUCJ_STR, -4, 20))
+    assert_equal("",               c.iconv(EUCJ_STR, 20))
+    assert_equal("",               c.iconv(EUCJ_STR, 20, 2))
+  ensure
+    c.close
+  end
+end if defined?(::Iconv)