Make the hexadecimal range processing stronger.

1 files changed, 38 insertions, 1 deletions

diff --git a/tests/analysis/scan/fuzzing.py b/tests/analysis/scan/fuzzing.py
index 5d99c35..1957f72 100644
--- a/tests/analysis/scan/fuzzing.py
+++ b/tests/analysis/scan/fuzzing.py
@@ -176,7 +176,9 @@ rule test {
 }
 '''
 
-        self.check_rule_failure(rule)
+        with self.assertRaisesRegex(ValueError, 'Unable to create content scanner'):
+
+            scanner = ContentScanner(rule)
 
 
     def testAllocations(self):
@@ -212,3 +214,38 @@ rule test {
 '''
 
         self.check_rule_success(rule, cnt)
+
+
+    def testValidHexRangeMerge(self):
+        """Merge valid hexadecimal ranges."""
+
+        rule = '''
+rule test {
+
+   bytes:
+      $a = { [0] ?? }
+
+   condition:
+      $a
+
+}
+'''
+
+        with self.assertRaisesRegex(ValueError, 'Unable to create content scanner'):
+
+            scanner = ContentScanner(rule)
+
+
+        rule = '''
+rule test {
+
+   bytes:
+      $a = { [2] ?? }
+
+   condition:
+      $a
+
+}
+'''
+
+        self.check_rule_failure(rule)