Add HTML path parser

1 files changed, 80 insertions, 0 deletions

diff --git a/tests/styles/parser/html_path_parser_tests.py b/tests/styles/parser/html_path_parser_tests.py
new file mode 100644
index 0000000..feaa343
--- /dev/null
+++ b/tests/styles/parser/html_path_parser_tests.py
@@ -0,0 +1,80 @@
+from nose.tools import istest, assert_equal
+
+from mammoth import html_paths
+from mammoth.styles.parser.html_path_parser import parse_html_path
+from mammoth.styles.parser.tokeniser import tokenise
+from mammoth.styles.parser.token_iterator import TokenIterator
+
+
+@istest
+def can_read_empty_path():
+    assert_equal(
+        html_paths.empty,
+        read_html_path("")
+    )
+
+@istest
+def can_read_single_element():
+    assert_equal(
+        html_paths.path([html_paths.element(["p"])]),
+        read_html_path("p")
+    )
+
+
+@istest
+def can_read_choice_of_two_elements():
+    assert_equal(
+        html_paths.path([html_paths.element(["ul", "ol"])]),
+        read_html_path("ul|ol")
+    )
+
+
+@istest
+def can_read_choice_of_three_elements():
+    assert_equal(
+        html_paths.path([html_paths.element(["ul", "ol", "p"])]),
+        read_html_path("ul|ol|p")
+    )
+
+
+@istest
+def can_read_nested_elements():
+    assert_equal(
+        html_paths.path([html_paths.element(["ul"]), html_paths.element(["li"])]),
+        read_html_path("ul > li")
+    )
+
+
+@istest
+def can_read_class_on_element():
+    assert_equal(
+        html_paths.path([html_paths.element(["p"], class_names=["tip"])]),
+        read_html_path("p.tip")
+    )
+
+
+@istest
+def can_read_multiple_classes_on_element():
+    assert_equal(
+        html_paths.path([html_paths.element(["p"], class_names=["tip", "help"])]),
+        read_html_path("p.tip.help")
+    )
+
+
+@istest
+def can_read_when_element_must_be_fresh():
+    assert_equal(
+        html_paths.path([html_paths.element(["p"], fresh=True)]),
+        read_html_path("p:fresh")
+    )
+
+
+@istest
+def can_read_ignore_element():
+    assert_equal(
+        html_paths.ignore,
+        read_html_path("!")
+    )
+
+def read_html_path(string):
+    return parse_html_path(TokenIterator(tokenise(string)))