[libxslt] Add Python script to run some tests on Windows

[Nick Wellnhofer <nwellnhof src gnome org>]

commit ea5a2b30c97bc7534f2ef2453362a6833dd937bb
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Thu Feb 25 14:41:37 2016 +0100

    Add Python script to run some tests on Windows

 win32/runtests.py |   82 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 82 insertions(+), 0 deletions(-)
---
diff --git a/win32/runtests.py b/win32/runtests.py
new file mode 100644
index 0000000..6986650
--- /dev/null
+++ b/win32/runtests.py
@@ -0,0 +1,82 @@
+import io
+import os
+import sys
+import difflib
+
+from os import path
+from subprocess import Popen, PIPE
+
+xsltproc = path.join(os.getcwd(), "win32", "bin.msvc", "xsltproc.exe")
+if not path.isfile(xsltproc):
+    raise FileNotFoundError(xsltproc)
+
+def runtests(xsl_dir, xml_dir="."):
+    old_dir = os.getcwd()
+    os.chdir(xsl_dir)
+
+    for xsl_file in os.listdir():
+        if not xsl_file.endswith(".xsl"):
+            continue
+        xsl_path = "./" + xsl_file
+        name = path.splitext(xsl_file)[0]
+
+        xml_path = path.join(xml_dir + "/" + name + ".xml")
+        if not path.isfile(xml_path):
+            continue
+
+        args = [ xsltproc, xsl_path, xml_path ]
+        p = Popen(args, stdout=PIPE, stderr=PIPE)
+        out_path = path.join(xml_dir, name + ".out")
+        err_path = path.join(xml_dir, name + ".err")
+        out_diff = diff(p.stdout, "<stdout>", name + ".out")
+        err_diff = diff(p.stderr, "<stderr>", name + ".err")
+
+        if (len(out_diff) or len(err_diff)):
+            sys.stdout.writelines(out_diff)
+            sys.stdout.writelines(err_diff)
+            print()
+
+    os.chdir(old_dir)
+
+def diff(got_stream, got_name, expected_path):
+    text_stream = io.TextIOWrapper(got_stream, encoding="latin_1")
+    got_lines = text_stream.readlines()
+
+    if path.isfile(expected_path):
+        file = open(expected_path, "r", encoding="latin_1")
+        expected_lines = file.readlines()
+    else:
+        expected_lines = []
+
+    diff = difflib.unified_diff(expected_lines, got_lines,
+                                fromfile=expected_path,
+                                tofile=got_name)
+    return list(diff)
+
+print("## Running REC tests")
+runtests("tests/REC")
+
+print("## Running general tests")
+runtests("tests/general", "./../docs")
+
+print("## Running exslt common tests")
+runtests("tests/exslt/common")
+
+print("## Running exslt functions tests")
+runtests("tests/exslt/functions")
+
+print("## Running exslt math tests")
+runtests("tests/exslt/math")
+
+print("## Running exslt sets tests")
+runtests("tests/exslt/sets")
+
+print("## Running exslt strings tests")
+runtests("tests/exslt/strings")
+
+print("## Running exslt dynamic tests")
+runtests("tests/exslt/dynamic")
+
+print("## Running exslt date tests")
+runtests("tests/exslt/date")
+