Issue #2175: Added tests for xml.sax.saxutils.prepare_input_source().

Made test XML files non-ASCII.

3 files changed, 61 insertions, 6 deletions

diff --git a/Lib/test/test_sax.py b/Lib/test/test_sax.py
index 86638a2..e314b7c 100644
--- a/Lib/test/test_sax.py
+++ b/Lib/test/test_sax.py
@@ -9,7 +9,7 @@ except SAXReaderNotAvailable:
     # don't try to test this module if we cannot create a parser
     raise ImportError("no XML parsers available")
 from xml.sax.saxutils import XMLGenerator, escape, unescape, quoteattr, \
-                             XMLFilterBase
+                             XMLFilterBase, prepare_input_source
 from xml.sax.expatreader import create_parser
 from xml.sax.handler import feature_namespaces
 from xml.sax.xmlreader import InputSource, AttributesImpl, AttributesNSImpl
@@ -167,6 +167,60 @@ class SaxutilsTest(unittest.TestCase):
         p = make_parser(['xml.parsers.no_such_parser'])
 
 
+class PrepareInputSourceTest(unittest.TestCase):
+
+    def setUp(self):
+        self.file = support.TESTFN
+        with open(self.file, "w") as tmp:
+            tmp.write("This was read from a file.")
+
+    def tearDown(self):
+        support.unlink(self.file)
+
+    def make_byte_stream(self):
+        return io.BytesIO(b"This is a byte stream.")
+
+    def checkContent(self, stream, content):
+        self.assertIsNotNone(stream)
+        self.assertEqual(stream.read(), content)
+        stream.close()
+
+
+    def test_byte_stream(self):
+        # If the source is an InputSource that does not have a character
+        # stream but does have a byte stream, use the byte stream.
+        src = InputSource(self.file)
+        src.setByteStream(self.make_byte_stream())
+        prep = prepare_input_source(src)
+        self.assertIsNone(prep.getCharacterStream())
+        self.checkContent(prep.getByteStream(),
+                          b"This is a byte stream.")
+
+    def test_system_id(self):
+        # If the source is an InputSource that has neither a character
+        # stream nor a byte stream, open the system ID.
+        src = InputSource(self.file)
+        prep = prepare_input_source(src)
+        self.assertIsNone(prep.getCharacterStream())
+        self.checkContent(prep.getByteStream(),
+                          b"This was read from a file.")
+
+    def test_string(self):
+        # If the source is a string, use it as a system ID and open it.
+        prep = prepare_input_source(self.file)
+        self.assertIsNone(prep.getCharacterStream())
+        self.checkContent(prep.getByteStream(),
+                          b"This was read from a file.")
+
+    def test_binary_file(self):
+        # If the source is a binary file-like object, use it as a byte
+        # stream.
+        prep = prepare_input_source(self.make_byte_stream())
+        self.assertIsNone(prep.getCharacterStream())
+        self.checkContent(prep.getByteStream(),
+                          b"This is a byte stream.")
+
+
 # ===== XMLGenerator
 
 start = '<?xml version="1.0" encoding="iso-8859-1"?>\n'
@@ -481,7 +535,7 @@ class ExpatReaderTest(XmlTestBase):
 
     # ===== XMLReader support
 
-    def test_expat_file(self):
+    def test_expat_binary_file(self):
         parser = create_parser()
         result = StringIO()
         xmlgen = XMLGenerator(result)
@@ -660,7 +714,7 @@ class ExpatReaderTest(XmlTestBase):
 
         self.assertEqual(result.getvalue(), xml_test_out)
 
-    def test_expat_inpsource_stream(self):
+    def test_expat_inpsource_byte_stream(self):
         parser = create_parser()
         result = StringIO()
         xmlgen = XMLGenerator(result)
@@ -896,6 +950,7 @@ class XmlReaderTest(XmlTestBase):
 def test_main():
     run_unittest(MakeParserTest,
                  SaxutilsTest,
+                 PrepareInputSourceTest,
                  StringXmlgenTest,
                  BytesIOXmlgenTest,
                  WriterXmlgenTest,
diff --git a/Lib/test/xmltestdata/test.xml b/Lib/test/xmltestdata/test.xml
index 9af92fb..92136da 100644
--- a/Lib/test/xmltestdata/test.xml
+++ b/Lib/test/xmltestdata/test.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="iso-8859-1"?>
 <HTML xmlns:pp="http://www.isogen.com/paul/post-processor">
 <TITLE>Introduction to XSL</TITLE>
 <H1>Introduction to XSL</H1>
@@ -110,6 +110,6 @@
 		</UL>
 	
 
-
+µ
 	
 </HTML>
diff --git a/Lib/test/xmltestdata/test.xml.out b/Lib/test/xmltestdata/test.xml.out
index d4ab1ab..f7e9ad2 100644
--- a/Lib/test/xmltestdata/test.xml.out
+++ b/Lib/test/xmltestdata/test.xml.out
@@ -110,6 +110,6 @@
 		</UL>
 	
 
-
+µ
 	
 </HTML>
\ No newline at end of file