Add a script to detect migrations for bokchoy

scripts/calculate-bokchoy-migrations.sh

+#!/usr/bin/env bash
+
+############################################################################
+#
+#   Output all migrations that would be applied to an
+#   empty database for the bok-choy acceptance tests.
+#
+############################################################################
+
+# Fail fast
+set -e
+
+if [[ -z "$BOK_CHOY_HOSTNAME" ]]; then
+    MYSQL_HOST=""
+    SETTINGS="bok_choy"
+else
+    MYSQL_HOST="--host=edx.devstack.mysql"
+    SETTINGS="bok_choy_docker"
+fi
+
+declare -A databases
+declare -a database_order
+databases=(["default"]="edxtest" ["student_module_history"]="student_module_history_test")
+database_order=("default" "student_module_history")
+
+for db in "${database_order[@]}"; do
+    echo "CREATE DATABASE IF NOT EXISTS ${databases[$db]};" | mysql $MYSQL_HOST -u root
+
+    # Clear out the test database using the reset_db command which uses "DROP DATABASE" and
+    # "CREATE DATABASE". This will result in an empty database.
+    echo "Clearing out the $db bok_choy MySQL database."
+    ./manage.py lms --settings $SETTINGS reset_db --traceback --router $db
+    # Now output all the migrations in the platform to a file.
+    echo "Calculating migrations."
+
+    # We could do this with either our custom code from the edx-django-release-util repo
+    # which will output in yaml format.
+    # output_file="bok_choy_${db}_migrations.yaml"
+    # ./manage.py lms --settings $SETTINGS show_unapplied_migrations --database $db --output_file $output_file
+
+    # OR we could do this with the built-in django command
+    # which will output in a format that is not friendly to machine parsing.
+    output_file="bok_choy_${db}_migrations.txt"
+    ./manage.py lms --settings $SETTINGS showmigrations --database $db > $output_file
+
+done
+
+