* Method to upgrade schemas in Postgres;
Adds:
- schemaUpgrade method which check the fields to add and delete from old schema;
* Remove the columns delete in schemaUpgrade method;
* ESLint fix and PostgresStorageAdapter.schemaUpgrade spec test
Adds:
- Add PostgresStorageAdapter.schemaUpgrade spec tests: creates a table,
simulates the addition of a new field and checks if its present in the database
Chores:
- ESLint eol-last fix;
* Add check columns before and after schema upgrade, and remove the unnecessary piece of code
Add:
- Check the right columns is present before schema upgrade and the new field is not,
then check if the right columns is present and the new field;
Remove:
- Piece of code unnecessary because it not need to remove diff columns;
* Optimize the schemaUpgrade method following @vitaly-t instructions, and more tests;
* If the class does not have any columns and needs an upgrade the code would
return without doing so. Fixed this.
Chore:
- Allows class with no column to be upgraded;
- Test for class with no columns being upgraded;
* Update PostgresStorageAdapter.js
rewriting method schemaUpgrade
* Update PostgresStorageAdapter.spec.js
* Update PostgresStorageAdapter.spec.js
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