tests: Start with testparser.c for extra tests

Several issues require customized tests. Start with a test that push
parses large documents. See #539.

Author: nwellnhof

.gitignore

@@ -19,6 +19,7 @@
 /testchar
 /testdict
 /testlimits
+/testparser
 /testrecurse
 
 # Tests

CMakeLists.txt

@@ -520,6 +520,7 @@ if(LIBXML2_WITH_TESTS)
 		testdict
 		testModule
 		testlimits
+		testparser
 		testrecurse
 		testThreads
 	)
@@ -543,6 +544,7 @@ if(LIBXML2_WITH_TESTS)
 	endif()
 	add_test(NAME testchar COMMAND testchar)
 	add_test(NAME testdict COMMAND testdict)
+	add_test(NAME testparser COMMAND testparser)
 	add_test(NAME testrecurse COMMAND testrecurse WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 	add_test(NAME testThreads COMMAND testThreads WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 endif()

Makefile.am

@@ -24,6 +24,7 @@ check_PROGRAMS = \
 	testchar \
 	testdict \
 	testlimits \
+	testparser \
 	testrecurse
 
 bin_PROGRAMS = xmllint xmlcatalog
@@ -140,6 +141,10 @@ testdict_SOURCES=testdict.c
 testdict_DEPENDENCIES = $(DEPS)
 testdict_LDADD= $(LDADDS)
 
+testparser_SOURCES=testparser.c
+testparser_DEPENDENCIES = $(DEPS)
+testparser_LDADD= $(LDADDS)
+
 runsuite_SOURCES=runsuite.c
 runsuite_DEPENDENCIES = $(DEPS)
 runsuite_LDADD= $(LDADDS)
@@ -193,6 +198,7 @@ check-local:
 	$(CHECKER) ./testapi$(EXEEXT)
 	$(CHECKER) ./testchar$(EXEEXT)
 	$(CHECKER) ./testdict$(EXEEXT)
+	$(CHECKER) ./testparser$(EXEEXT)
 	$(CHECKER) ./testModule$(EXEEXT)
 	$(CHECKER) ./testThreads$(EXEEXT)
 	$(CHECKER) ./runxmlconf$(EXEEXT)

testparser.c

@@ -0,0 +1,45 @@
+/*
+ * testparser.c: Additional parser tests
+ *
+ * See Copyright for the status of this software.
+ */
+
+#include <libxml/parser.h>
+
+#ifdef LIBXML_PUSH_ENABLED
+static int
+testHugePush(void) {
+    xmlParserCtxtPtr ctxt;
+    int err, i;
+
+    ctxt = xmlCreatePushParserCtxt(NULL, NULL, NULL, 0, NULL);
+
+    /*
+     * Push parse a document larger than XML_MAX_LOOKUP_LIMIT
+     * (10,000,000 bytes). This mainly tests whether shrinking the
+     * buffer works when push parsing.
+     */
+    xmlParseChunk(ctxt, "<doc>", 5, 0);
+    for (i = 0; i < 1000000; i++)
+        xmlParseChunk(ctxt, "<elem>text</elem>", 17, 0);
+    xmlParseChunk(ctxt, "</doc>", 6, 1);
+
+    err = ctxt->wellFormed ? 0 : 1;
+    xmlFreeDoc(ctxt->myDoc);
+    xmlFreeParserCtxt(ctxt);
+
+    return err;
+}
+#endif
+
+int
+main(void) {
+    int err = 0;
+
+#ifdef LIBXML_PUSH_ENABLED
+    err |= testHugePush();
+#endif
+
+    return err;
+}
+