Add collapsing of HTML nodes

1 files changed, 107 insertions, 0 deletions

diff --git a/tests/html/collapse_tests.py b/tests/html/collapse_tests.py
new file mode 100644
index 0000000..52cecd2
--- /dev/null
+++ b/tests/html/collapse_tests.py
@@ -0,0 +1,107 @@
+from nose.tools import istest, assert_equal
+
+from mammoth import html
+
+
+@istest
+def collapsing_does_nothing_to_single_text_node():
+    assert_equal(
+        html.collapse([html.text("Bluebells")]),
+        [html.text("Bluebells")])
+
+
+@istest
+def consecutive_fresh_elements_are_not_collapsed():
+    assert_equal(
+        html.collapse([html.element("p"), html.element("p")]),
+        [html.element("p"), html.element("p")])
+
+
+@istest
+def consecutive_collapsible_elements_are_collapsed_if_they_have_the_same_tag_and_attributes():
+    assert_equal(
+        [html.collapsible_element("p", {}, [html.text("One"), html.text("Two")])],
+        html.collapse([
+            html.collapsible_element("p", {}, [html.text("One")]),
+            html.collapsible_element("p", {}, [html.text("Two")])
+        ]))
+        
+
+@istest
+def elements_with_different_tag_names_are_not_collapsed():
+    assert_equal(
+        [
+            html.collapsible_element("p", {}, [html.text("One")]),
+            html.collapsible_element("div", {}, [html.text("Two")])
+        ],
+        
+        html.collapse([
+            html.collapsible_element("p", {}, [html.text("One")]),
+            html.collapsible_element("div", {}, [html.text("Two")])
+        ]))
+        
+
+@istest
+def elements_with_different_attributes_are_not_collapsed():
+    assert_equal(
+        [
+            html.collapsible_element("p", {"id": "a"}, [html.text("One")]),
+            html.collapsible_element("p", {}, [html.text("Two")])
+        ],
+        
+        html.collapse([
+            html.collapsible_element("p", {"id": "a"}, [html.text("One")]),
+            html.collapsible_element("p", {}, [html.text("Two")])
+        ]))
+
+
+@istest
+def children_of_collapsed_element_can_collapse_with_children_of_previous_element():
+    assert_equal(
+        [
+            html.collapsible_element("blockquote", {}, [
+                html.collapsible_element("p", {}, [
+                    html.text("One"),
+                    html.text("Two")
+                ])
+            ]),
+        ],
+        
+        html.collapse([
+            html.collapsible_element("blockquote", {}, [
+                html.collapsible_element("p", {}, [html.text("One")])
+            ]),
+            html.collapsible_element("blockquote", {}, [
+                html.collapsible_element("p", {}, [html.text("Two")])
+            ]),
+        ]))
+
+
+@istest
+def collapsible_element_can_collapse_into_previous_fresh_element():
+    assert_equal(
+        [html.element("p", {}, [html.text("One"), html.text("Two")])],
+        html.collapse([
+            html.element("p", {}, [html.text("One")]),
+            html.collapsible_element("p", {}, [html.text("Two")])
+        ]))
+
+
+@istest
+def element_with_choice_of_tag_names_can_collapse_into_previous_element_if_it_has_one_of_those_tag_names_as_its_main_tag_name():
+    assert_equal(
+        [html.collapsible_element(["ol"])],
+        html.collapse([
+            html.collapsible_element("ol"),
+            html.collapsible_element(["ul", "ol"])
+        ]))
+
+    assert_equal(
+        [
+            html.collapsible_element(["ul", "ol"]),
+            html.collapsible_element("ol")
+        ],
+        html.collapse([
+            html.collapsible_element(["ul", "ol"]),
+            html.collapsible_element("ol")
+        ]))