test: Add more tests to improve test coverage

test: Add more tests to improve test coverage

## [1.3.0](v1.2.0...v1.3.0) (2022-09-11)

### Features

* Initial implementation for dashboards and visualizations app ([#15](#15)) ([33a6306](33a6306))
* integrate pub/sub to notify new uploads ([#26](#26)) ([d6ae0f1](d6ae0f1))

### Bug Fixes

* **api:** add missing field on upload chunk creation ([#31](#31)) ([4565996](4565996))
* **docker:** Dockerfile ([#24](#24)) ([318ace2](318ace2))
* drf missing static assets ([#25](#25)) ([3b1e745](3b1e745))
* **api:** erroneous upload chunk request data consumption ([#23](#23)) ([759f3a8](759f3a8))
* PubSub message creation ([#36](#36)) ([0f9bf8a](0f9bf8a))
* PubSub message to JSON conversion ([#37](#37)) ([4962190](4962190)), closes [#36](#36)

### Dependency Updates

* **deps:** bump django from 4.0.4 to 4.0.6 ([#16](#16)) ([58e3455](58e3455))
* **deps:** bump jquery-validation from 1.19.4 to 1.19.5 ([#17](#17)) ([6f9aeee](6f9aeee))
* **deps:** bump terser from 5.13.1 to 5.14.2 ([#19](#19)) ([06e7956](06e7956))

### Refactors

* **config:** add pub_sub_topic environment variable ([#34](#34)) ([446cc4a](446cc4a))
* add unit tests ([#22](#22)) ([ade99da](ade99da))
* data_source & metadata_extract filters ([#18](#18)) ([07e6c6b](07e6c6b))
* **conf:** improve project configuration ([#21](#21)) ([f8e1614](f8e1614))
* **pubsub:** refactor pubsub event trigger ([#30](#30)) ([43f1c9a](43f1c9a))
* **core:** refactor upload metadata architecture. ([#28](#28)) ([781ec68](781ec68))
* **api:** remove unneeded fields from the start upload chunk api. ([#27](#27)) ([3a498b6](3a498b6))