Migrations: migration for 'genotype_resources' table

* migrations/auth/20221110_04_6PRFQ-create-genotype-resources-table.py: new
  migration
* tests/unit/auth/test_create_table_migrations.py: test new migration

1 files changed, 23 insertions, 0 deletions

diff --git a/migrations/auth/20221110_04_6PRFQ-create-genotype-resources-table.py b/migrations/auth/20221110_04_6PRFQ-create-genotype-resources-table.py
new file mode 100644
index 0000000..9200774
--- /dev/null
+++ b/migrations/auth/20221110_04_6PRFQ-create-genotype-resources-table.py
@@ -0,0 +1,23 @@
+"""
+Create 'genotype_resources' table
+
+NOTE: A "genotype resource" can only ever be linked to one and only one "resource object"
+      A "resource object" can be linked to one or more "genotype resource".
+"""
+
+from yoyo import step
+
+__depends__ = {'20221110_03_ka3W0-create-phenotype-resources-table'}
+
+steps = [
+    step(
+        """
+        CREATE TABLE IF NOT EXISTS genotype_resources(
+            resource_id TEXT NOT NULL,
+            trait_id TEXT NOT NULL UNIQUE,
+            PRIMARY KEY(resource_id, trait_id),
+            FOREIGN KEY(resource_id) REFERENCES resources(resource_id)
+        ) WITHOUT ROWID
+        """,
+        "DROP TABLE IF EXISTS genotype_resources")
+]