Add backend unit tests

- Add unit testing code in backend/tests/
- Change to snake-case for script/file/directory names
- Use os.path.join() instead of '/'
- Refactor script code into function defs and a main-guard
- Make global vars all-caps

Some fixes:
- For getting descriptions, some wiki redirects weren't properly resolved
- Linked images were sub-optimally propagated
- Generation of reduced trees assumed a wiki-id association implied a description
- Tilo.py had potential null dereferences by not always using a reduced node set
- EOL image downloading didn't properly wait for all threads to end when finishing

1 files changed, 42 insertions, 0 deletions

diff --git a/backend/tests/test_gen_pop_data.py b/backend/tests/test_gen_pop_data.py
new file mode 100644
index 0000000..dd1cb22
--- /dev/null
+++ b/backend/tests/test_gen_pop_data.py
@@ -0,0 +1,42 @@
+import unittest
+import tempfile, os
+
+from tests.common import createTestDbTable, readTestDbTable
+from tol_data.gen_pop_data import genData
+
+class TestGenData(unittest.TestCase):
+	def test_gen(self):
+		with tempfile.TemporaryDirectory() as tempDir:
+			# Create temp pageviews db
+			pageviewsDb = os.path.join(tempDir, 'pageview_data.db')
+			createTestDbTable(
+				pageviewsDb,
+				'CREATE TABLE views (title TEXT PRIMARY KEY, id INT, views INT)',
+				'INSERT INTO views VALUES (?, ?, ?)',
+				{
+					('one', 1, 10),
+					('two', 2, 20),
+					('three', 3, 30),
+				}
+			)
+			# Create temp tree-of-life db
+			dbFile = os.path.join(tempDir, 'data.db')
+			createTestDbTable(
+				dbFile,
+				'CREATE TABLE wiki_ids (name TEXT PRIMARY KEY, id INT)',
+				'INSERT INTO wiki_ids VALUES (?, ?)',
+				{
+					('node1', 1),
+					('node3', 3),
+				}
+			)
+			# Run
+			genData(pageviewsDb, dbFile)
+			# Check
+			self.assertEqual(
+				readTestDbTable(dbFile, 'SELECT name, pop from node_pop'),
+				{
+					('node1', 10),
+					('node3', 30)
+				}
+			)