From 7e9891790de5d3efe2eb0f44433a5c19ab681c20 Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Sun, 7 Apr 2024 13:30:12 -0400
Subject: [PATCH] add test for how we handle compressed files

this is insufficient coverage, there are other methods that likely
support decompression. this test is only intended to demonstrate an
instance of zlib/lzma support, relative to libxml2's "legacy" option
in v2.13.0.
---
 ext/nokogiri/nokogiri.c     |   3 +++
 test/files/staff.xml.gz     | Bin 0 -> 792 bytes
 test/xml/sax/test_parser.rb |  10 ++++++++++
 3 files changed, 13 insertions(+)
 create mode 100644 test/files/staff.xml.gz

diff --git a/ext/nokogiri/nokogiri.c b/ext/nokogiri/nokogiri.c
index d97413e5c24..66c40bda263 100644
--- a/ext/nokogiri/nokogiri.c
+++ b/ext/nokogiri/nokogiri.c
@@ -203,6 +203,9 @@ Init_nokogiri(void)
   rb_const_set(mNokogiri, rb_intern("LIBXSLT_COMPILED_VERSION"), NOKOGIRI_STR_NEW2(LIBXSLT_DOTTED_VERSION));
   rb_const_set(mNokogiri, rb_intern("LIBXSLT_LOADED_VERSION"), NOKOGIRI_STR_NEW2(xsltEngineVersion));
 
+  rb_const_set(mNokogiri, rb_intern("LIBXML_ZLIB_ENABLED"),
+               xmlHasFeature(XML_WITH_ZLIB) == 1 ? Qtrue : Qfalse);
+
 #ifdef NOKOGIRI_PACKAGED_LIBRARIES
   rb_const_set(mNokogiri, rb_intern("PACKAGED_LIBRARIES"), Qtrue);
 #  ifdef NOKOGIRI_PRECOMPILED_LIBRARIES
diff --git a/test/files/staff.xml.gz b/test/files/staff.xml.gz
new file mode 100644
index 0000000000000000000000000000000000000000..1c634e42ae9cdfff2c878ca189b593007813717e
GIT binary patch
literal 792
zcmV+z1Lyo7iwFp8F&$<A19Nm?W@avUZEOIoRozdcKoEcTuNZmI7u!N>J&j0HTQ0%$
zD=j`W#+a2IEf?5rmaS+1`<q2dJ%wD(yM`2Yc6Qj`$1HB|HBI0JRTfKeWjRgT>UnN2
z^cP`c5iUnQ%z|M*?DxC__i#8Jgv*%^nPyK<uvjiae+*VWYI4mjxH|v<_t2k&LAV4I
z+5rnQ%ljB^gXLV<HVj#kungvs@y|&eutI!g70XY-a_QzLn9>cnOfl1ObalMM?AR;A
zOf$E&&m&l~Kr{7>nn0P^p7*(S7iPEDqhLTA7dqD4+j(H^p1;QlS}-wufRLJL;>`I}
zfiQ=wID@w}kgen<;qZvS<1Au|;~wkCAJaN`RN#+i;j#$#!*CQV^6<}?>lF<0H(K^?
z-DDc}!(ckuZ=&3E8Oirrm)|bMD<ehzz0tYRfE)o`kxX+k#U_131x~Zkpp0B{D(+&s
zPUIHRyr>)m+#@))Z97E&K4ww`OVJyX227C(^q^zmw(_W%Udt>tyYc!_BsW4cq1{#)
zg#FJXXDnfA>vhjg=v8j37@C=96daZJ9aEN|+bV`;hH<Vi%l4MBmd2k>yJN#dD&o5T
zg3ZF0Cy@IOF3!7Mf>NwCuv_nN|AB*cEeCqVV9vHeCOmTw?{bmvcD%DU(H9sQ=;Q<1
znx7kLj!&piM7YzW4M(P>F7I>gKGqSy_zxBt4L?_8pvr1m(onNUIHEsOtV$PJO~Mh+
z?__zWMW_4ETF~L55OpEU8?sUlGwfU*<cgerRgq4$B6InS>Huz}z^no~#Qf@bZ4Aqj
zhe#$#Y);IFm>+vXH1WJm#!N6OQ_YTJ+jaC9V5gUVL(fE7-fRlj@)g?OAW$!{cs>DL
z8n*LQdQPk9xk0goX(WY^s>&HN`h?IVCNPW@c}&)jaPdDaVrX+NEsq#j$PF3Vd`YU>
z_w1`|bnDDQokwzS33U}41DUQjnwoR5#)upfXS#-tT1(WD@mqs9=WWNFTs)4NIr@{r
W3-7?6*Mn~rC;2bR$*dO#2mk=ZUw@ha

literal 0
HcmV?d00001

diff --git a/test/xml/sax/test_parser.rb b/test/xml/sax/test_parser.rb
index 832ab05e2ed..062e251d159 100644
--- a/test/xml/sax/test_parser.rb
+++ b/test/xml/sax/test_parser.rb
@@ -274,6 +274,16 @@ def call_parse_io_with_encoding(encoding)
           end
         end
 
+        it "parses a compressed file" do
+          skip("libxml2 legacy support") unless Nokogiri.uses_libxml? && Nokogiri::LIBXML_ZLIB_ENABLED
+
+          filename = XML_FILE + ".gz"
+          parser.parse_file(filename)
+
+          refute_nil(parser.document.start_elements)
+          assert_operator(parser.document.start_elements.count, :>, 30)
+        end
+
         it :test_render_parse_nil_param do
           assert_raises(TypeError) { parser.parse_memory(nil) }
         end