Localize notification_utils to the admin

This changeset pulls in all of the notification_utils code directly into the admin and removes it as an external dependency. We are doing this to cut down on operational maintenance of the project and will begin removing parts of it no longer needed for the admin.

Signed-off-by: Carlo Costino <carlo.costino@gsa.gov>

tests/notifications_utils/test_template_change.py

@@ -0,0 +1,135 @@
+import pytest
+
+from notifications_utils.template_change import TemplateChange
+
+from .test_base_template import ConcreteTemplate
+
+
+@pytest.mark.parametrize(
+    "old_template, new_template, should_differ",
+    [
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            False,
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((3)) ((2)) ((1))"}),
+            False,
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1)) ((1)) ((2)) ((2)) ((3)) ((3))"}),
+            False,
+        ),
+        (
+            ConcreteTemplate({"content": "((1))"}),
+            ConcreteTemplate({"content": "((1)) ((2))"}),
+            True,
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2))"}),
+            ConcreteTemplate({"content": "((1))"}),
+            True,
+        ),
+        (
+            ConcreteTemplate({"content": "((a)) ((b))"}),
+            ConcreteTemplate({"content": "((A)) (( B_ ))"}),
+            False,
+        ),
+    ],
+)
+def test_checking_for_difference_between_templates(
+    old_template, new_template, should_differ
+):
+    assert (
+        TemplateChange(old_template, new_template).has_different_placeholders
+        == should_differ
+    )
+
+
+@pytest.mark.parametrize(
+    "old_template, new_template, placeholders_added",
+    [
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            set(),
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1)) ((1)) ((2)) ((2)) ((3)) ((3))"}),
+            set(),
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1))"}),
+            set(),
+        ),
+        (
+            ConcreteTemplate({"content": "((1))"}),
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            set(["2", "3"]),
+        ),
+        (
+            ConcreteTemplate({"content": "((a))"}),
+            ConcreteTemplate({"content": "((A)) ((B)) ((C))"}),
+            set(["B", "C"]),
+        ),
+    ],
+)
+def test_placeholders_added(old_template, new_template, placeholders_added):
+    assert (
+        TemplateChange(old_template, new_template).placeholders_added
+        == placeholders_added
+    )
+
+
+@pytest.mark.parametrize(
+    "old_template, new_template, placeholders_removed",
+    [
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            set(),
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1)) ((1)) ((2)) ((2)) ((3)) ((3))"}),
+            set(),
+        ),
+        (
+            ConcreteTemplate({"content": "((1))"}),
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            set(),
+        ),
+        (
+            ConcreteTemplate({"content": "((1)) ((2)) ((3))"}),
+            ConcreteTemplate({"content": "((1))"}),
+            set(["2", "3"]),
+        ),
+        (
+            ConcreteTemplate({"content": "((a)) ((b)) ((c))"}),
+            ConcreteTemplate({"content": "((A))"}),
+            set(["b", "c"]),
+        ),
+    ],
+)
+def test_placeholders_removed(old_template, new_template, placeholders_removed):
+    assert (
+        TemplateChange(old_template, new_template).placeholders_removed
+        == placeholders_removed
+    )
+
+
+def test_ordering_of_placeholders_is_preserved():
+    before = ConcreteTemplate({"content": "((dog)) ((cat)) ((rat))"})
+    after = ConcreteTemplate({"content": "((platypus)) ((echidna)) ((quokka))"})
+    change = TemplateChange(before, after)
+    assert change.placeholders_removed == ["dog", "cat", "rat"] == before.placeholders
+    assert (
+        change.placeholders_added
+        == ["platypus", "echidna", "quokka"]
+        == after.placeholders
+    )