Tests based on Stefan Goessner's examples

Author: kaapstorm

tests/test_parser.py

@@ -38,3 +38,64 @@ def test_nested(self):
                                 ('foo where baz', Where(Fields('foo'), Fields('baz'))),
                                 ('foo..baz', Descendants(Fields('foo'), Fields('baz'))),
                                 ('foo..baz.bing', Descendants(Fields('foo'), Child(Fields('baz'), Fields('bing'))))])
+
+    def test_goessner_examples(self):
+        """
+        Test Stefan Goessner's `examples`_
+
+        .. _examples: https://goessner.net/articles/JsonPath/index.html#e3
+        """
+        self.check_parse_cases([
+            # The authors of all books in the store
+            ("$.store.book[*].author",
+             Child(Child(Child(Child(Root(), Fields('store')), Fields('book')),
+                         Slice()), Fields('author'))),
+
+            # All authors
+            ("$..author", Descendants(Root(), Fields('author'))),
+
+            # All things in the store
+            ("$.store.*", Child(Child(Root(), Fields('store')), Fields('*'))),
+
+            # The price of everything in the store
+            ("$.store..price",
+             Descendants(Child(Root(), Fields('store')), Fields('price'))),
+
+            # The third book
+            ("$..book[2]",
+             Child(Descendants(Root(), Fields('book')),Index(2))),
+
+            # The last book in order
+            # ("$..book[(@.length-1)]",  # Not implemented
+            #  Child(Descendants(Root(), Fields('book')), Slice(start=-1))),
+            ("$..book[-1:]",
+             Child(Descendants(Root(), Fields('book')), Slice(start=-1))),
+
+            # The first two books
+            # ("$..book[0,1]",  # Not implemented
+            #  Child(Descendants(Root(), Fields('book')), Slice(end=2))),
+            ("$..book[:2]",
+             Child(Descendants(Root(), Fields('book')), Slice(end=2))),
+
+            # Filter all books with ISBN number
+            # ("$..book[?(@.isbn)]", None),  # Not implemented
+
+            # Filter all books cheaper than 10
+            # ("$..book[?(@.price<10)]", None),  # Not implemented
+
+            # All members of JSON structure
+            ("$..*", Descendants(Root(), Fields('*'))),
+        ])
+
+    def test_a_few_more_examples(self):
+        self.check_parse_cases([
+            # Navigate objects
+            ("$.store.book[0].title",
+             Child(Child(Child(Child(Root(), Fields('store')), Fields('book')),
+                         Index(0)), Fields('title'))),
+
+            # Navigate dictionaries
+            ("$['store']['book'][0]['title']",
+             Child(Child(Child(Child(Root(), Fields('store')), Fields('book')),
+                         Index(0)), Fields('title'))),
+        ])