Merge pull request #4593 from shuujii/add-encoding-argument-to-Integral-chr

Add encoding argument to `Integral#chr`

1 files changed, 24 insertions, 0 deletions

diff --git a/mrbgems/mruby-string-ext/test/numeric.rb b/mrbgems/mruby-string-ext/test/numeric.rb
index cae562fc1..dfcb9ebf4 100644
--- a/mrbgems/mruby-string-ext/test/numeric.rb
+++ b/mrbgems/mruby-string-ext/test/numeric.rb
@@ -1,5 +1,29 @@
+# coding: utf-8
+
 assert('Integer#chr') do
   assert_equal("A", 65.chr)
   assert_equal("B", 0x42.chr)
+  assert_equal("\xab", 171.chr)
   assert_raise(RangeError) { -1.chr }
+  assert_raise(RangeError) { 256.chr }
+
+  assert_equal("A", 65.chr("ASCII-8BIT"))
+  assert_equal("B", 0x42.chr("BINARY"))
+  assert_equal("\xab", 171.chr("ascii-8bit"))
+  assert_raise(RangeError) { -1.chr("binary") }
+  assert_raise(RangeError) { 256.chr("Ascii-8bit") }
+  assert_raise(ArgumentError) { 65.chr("ASCII") }
+  assert_raise(ArgumentError) { 65.chr("ASCII-8BIT", 2) }
+  assert_raise(TypeError) { 65.chr(:BINARY) }
+
+  if __ENCODING__ == "ASCII-8BIT"
+    assert_raise(ArgumentError) { 65.chr("UTF-8") }
+  else
+    assert_equal("A", 65.chr("UTF-8"))
+    assert_equal("B", 0x42.chr("UTF-8"))
+    assert_equal("«", 171.chr("utf-8"))
+    assert_equal("あ", 12354.chr("Utf-8"))
+    assert_raise(RangeError) { -1.chr("utf-8") }
+    assert_raise(RangeError) { 0x110000.chr.chr("UTF-8") }
+  end
 end