[PATCH v2 3/3] qemuxmlconftest: Add test cases for broken and missing XML files

[Peter Krempa <pkrempa@xxxxxxxxxx>]

Add test cases for few edge cases which excercise the XML reporting from
libxml2 in anticipation of upcoming changes of behaviour.

'virschematest' must skip parsing of the broken file altogether so this
patch adds infrastructure to allow that.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 .../broken-xml-invalid.x86_64-latest.err             |  3 +++
 tests/qemuxmlconfdata/broken-xml-invalid.xml         |  1 +
 .../nonexistent-file.x86_64-latest.err               |  1 +
 tests/qemuxmlconftest.c                              |  8 +++++++-
 tests/testutilsqemu.h                                |  1 +
 tests/virschematest.c                                | 12 ++++++++++++
 6 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 tests/qemuxmlconfdata/broken-xml-invalid.x86_64-latest.err
 create mode 100644 tests/qemuxmlconfdata/broken-xml-invalid.xml
 create mode 100644 tests/qemuxmlconfdata/nonexistent-file.x86_64-latest.err

diff --git a/tests/qemuxmlconfdata/broken-xml-invalid.x86_64-latest.err b/tests/qemuxmlconfdata/broken-xml-invalid.x86_64-latest.err
new file mode 100644
index 0000000000..35a1801371
--- /dev/null
+++ b/tests/qemuxmlconfdata/broken-xml-invalid.x86_64-latest.err
@@ -0,0 +1,3 @@
+ABS_SRCDIR/qemuxmlconfdata/broken-xml-invalid.xml:2: Couldn't find end of Start Tag dom line 1
+(null)
+^
diff --git a/tests/qemuxmlconfdata/broken-xml-invalid.xml b/tests/qemuxmlconfdata/broken-xml-invalid.xml
new file mode 100644
index 0000000000..9903e61ead
--- /dev/null
+++ b/tests/qemuxmlconfdata/broken-xml-invalid.xml
@@ -0,0 +1 @@
+<dom
diff --git a/tests/qemuxmlconfdata/nonexistent-file.x86_64-latest.err b/tests/qemuxmlconfdata/nonexistent-file.x86_64-latest.err
new file mode 100644
index 0000000000..0ddf1ea510
--- /dev/null
+++ b/tests/qemuxmlconfdata/nonexistent-file.x86_64-latest.err
@@ -0,0 +1 @@
+XML error: failed to parse xml document 'ABS_SRCDIR/qemuxmlconfdata/nonexistent-file.xml'
diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
index 5fe69db15f..0ac9337775 100644
--- a/tests/qemuxmlconftest.c
+++ b/tests/qemuxmlconftest.c
@@ -372,6 +372,7 @@ testCheckExclusiveFlags(int flags)
                   FLAG_REAL_CAPS |
                   FLAG_SLIRP_HELPER |
                   FLAG_ALLOW_DUPLICATE_OUTPUT |
+                  FLAG_ALLOW_MISSING_INPUT |
                   0, -1);

     return 0;
@@ -671,7 +672,8 @@ testQemuConfXMLCommon(testQemuInfo *info,
     if (qemuTestCapsCacheInsert(driver.qemuCapsCache, info->qemuCaps) < 0)
         goto cleanup;

-    if (!virFileExists(info->infile)) {
+    if (!(info->flags & FLAG_ALLOW_MISSING_INPUT) &&
+        !virFileExists(info->infile)) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
                        "Input file '%s' not found", info->infile);
         goto cleanup;
@@ -1237,6 +1239,10 @@ mymain(void)
     g_unsetenv("PIPEWIRE_REMOTE");
     g_unsetenv("PIPEWIRE_RUNTIME_DIR");

+    DO_TEST_CAPS_ARCH_LATEST_FULL("nonexistent-file", "x86_64",
+                                  ARG_FLAGS, FLAG_EXPECT_PARSE_ERROR | FLAG_ALLOW_MISSING_INPUT);
+    DO_TEST_CAPS_LATEST_PARSE_ERROR("broken-xml-invalid");
+
     DO_TEST_CAPS_LATEST("x86_64-pc-minimal");
     DO_TEST_CAPS_LATEST_ABI_UPDATE("x86_64-pc-minimal");
     DO_TEST_CAPS_LATEST("x86_64-q35-minimal");
diff --git a/tests/testutilsqemu.h b/tests/testutilsqemu.h
index a5806f244b..90632031ff 100644
--- a/tests/testutilsqemu.h
+++ b/tests/testutilsqemu.h
@@ -61,6 +61,7 @@ typedef enum {
     FLAG_REAL_CAPS          = 1 << 2,
     FLAG_SLIRP_HELPER       = 1 << 3,
     FLAG_ALLOW_DUPLICATE_OUTPUT = 1 << 4, /* allow multiple tests with the same output file */
+    FLAG_ALLOW_MISSING_INPUT = 1 << 5,
 } testQemuInfoFlags;

 struct testQemuConf {
diff --git a/tests/virschematest.c b/tests/virschematest.c
index 9b6649a6cf..e89730e8dc 100644
--- a/tests/virschematest.c
+++ b/tests/virschematest.c
@@ -36,6 +36,7 @@ struct testSchemaEntry {
     const char **exceptions; /* optional NULL terminated list of filenames inside
                                 directory where the expected validation result is
                                 inverted */
+    const char **skip; /* list of files to skip altogether */
     const char *dirRegex;
     const char *file;
 };
@@ -131,6 +132,10 @@ testSchemaDir(const char *schema,
             !g_regex_match(filter, ent->d_name, 0, NULL))
             continue;

+        if (entry->skip &&
+            g_strv_contains(entry->skip, ent->d_name))
+            continue;
+
         if (entry->exceptions)
             exception = g_strv_contains(entry->exceptions, ent->d_name);

@@ -237,10 +242,17 @@ static const char *exceptions_qemuxmlconfdata[] = {
     NULL
 };

+/* skip tests with completely broken XML */
+static const char *skip_qemuxmlconfdata[] = {
+    "broken-xml-invalid.xml",
+    NULL
+};
+
 static const struct testSchemaEntry schemaDomain[] = {
     { .dir = "tests/domainschemadata" },
     { .dir = "tests/qemuxmlconfdata",
       .exceptions = exceptions_qemuxmlconfdata,
+      .skip = skip_qemuxmlconfdata,
     },
     { .dir = "tests/xmconfigdata" },
     { .dir = "tests/lxcxml2xmldata" },
-- 
2.45.2