+
+
+OSM_TYPE = {'N' : 'node', 'W' : 'way', 'R' : 'relation',
+ 'n' : 'node', 'w' : 'way', 'r' : 'relation',
+ 'node' : 'n', 'way' : 'w', 'relation' : 'r'}
+
+
+class OsmType:
+ """ Compares an OSM type, accepting both N/R/W and node/way/relation.
+ """
+
+ def __init__(self, value):
+ self.value = value
+
+
+ def __eq__(self, other):
+ return other == self.value or other == OSM_TYPE[self.value]
+
+
+ def __str__(self):
+ return f"{self.value} or {OSM_TYPE[self.value]}"
+
+
+class Field:
+ """ Generic comparator for fields, which looks at the type of the
+ value compared.
+ """
+ def __init__(self, value, **extra_args):
+ self.value = value
+ self.extra_args = extra_args
+
+ def __eq__(self, other):
+ if isinstance(self.value, float):
+ return math.isclose(self.value, float(other), **self.extra_args)
+
+ if self.value.startswith('^'):
+ return re.fullmatch(self.value, str(other))
+
+ if isinstance(other, dict):
+ return other == eval('{' + self.value + '}')
+
+ return str(self.value) == str(other)
+
+ def __str__(self):
+ return str(self.value)
+
+
+class Bbox:
+ """ Comparator for bounding boxes.
+ """
+ def __init__(self, bbox_string):
+ self.coord = [float(x) for x in bbox_string.split(',')]
+
+ def __contains__(self, item):
+ if isinstance(item, str):
+ item = item.split(',')
+ item = list(map(float, item))
+
+ if len(item) == 2:
+ return self.coord[0] <= item[0] <= self.coord[2] \
+ and self.coord[1] <= item[1] <= self.coord[3]
+
+ if len(item) == 4:
+ return item[0] >= self.coord[0] and item[1] <= self.coord[1] \
+ and item[2] >= self.coord[2] and item[3] <= self.coord[3]
+
+ raise ValueError("Not a coordinate or bbox.")
+
+ def __str__(self):
+ return str(self.coord)
+
+
+
+def check_for_attributes(obj, attrs, presence='present'):
+ """ Check that the object has the given attributes. 'attrs' is a
+ string with a comma-separated list of attributes. If 'presence'
+ is set to 'absent' then the function checks that the attributes do
+ not exist for the object
+ """
+ def _dump_json():
+ return json.dumps(obj, sort_keys=True, indent=2, ensure_ascii=False)
+
+ for attr in attrs.split(','):
+ attr = attr.strip()
+ if presence == 'absent':
+ assert attr not in obj, \
+ f"Unexpected attribute {attr}. Full response:\n{_dump_json()}"
+ else:
+ assert attr in obj, \
+ f"No attribute '{attr}'. Full response:\n{_dump_json()}"
+