add test for false positive GPL3 license

Reference: httpe://github.com//issues/3932
Signed-off-by: Alok Kumar <alokkumarjipura9973@gmail.com>

Author: alok1304

tests/licensedcode/data/false_positive/false-positive-gpl3.txt

@@ -0,0 +1,17 @@
+    .chip	= {
+        .base	= S5PC100_GPL1(0),
+        .ngpio	= S5PC100_GPIO_L1_NR,
+        .label	= "GPL1",
+    },
+}, {
+    .chip	= {
+        .base	= S5PC100_GPL2(0),
+        .ngpio	= S5PC100_GPIO_L2_NR,
+        .label	= "GPL2",
+    },
+}, {
+    .chip	= {
+        .base	= S5PC100_GPL3(0),
+        .ngpio	= S5PC100_GPIO_L3_NR,
+        .label	= "GPL3",
+    },

tests/licensedcode/test_detect.py

@@ -1311,3 +1311,10 @@ def test_detection_return_correct_mit_not_apache_using_full_index(self):
         matches = idx.match(location=query_location)
         results = [m.rule.license_expression for m in matches]
         assert results == expected
+
+    def test_detection_returns_correct_no_gpl3_false_positive(self):
+        idx = cache.get_index()
+        query_location = self.get_test_loc('false_positive/false-positive-gpl3.txt')
+        matches = idx.match(location=query_location)
+        assert not matches
+