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A command line tool to allow the testing of datasets

Project description

The json file (test_definitions.json) contains the configuration of the data elements and the tests that need to be executed.

There are 2 main types of connections:
* Database connections
* File connections (this will be subdivided into local and S3)

The data definition defines one of 3 things:
* A database table
* A file (csv or parquet)
* A database query

The tests define the tests that can be executed. Currently there are 2 types of tests implemented:
* Uniqueness - check for the uniqueness of a field
* Foreign Key constraint - check for a key not existing

## Requirements for the current test file

* Local installation of spark
* Postgres and table setup

## Execution

* Fix this part of the script according to your installation of Dtest
from dtest.dtest import Dtest

* `python ./tests/test_definitions.json`


- [x] add timing calculation to the execution of the test
- [ ] complete Dtest integration to the suite (sending the message)
- [ ] add code tests
- [ ] remove username and password from test file
- [ ] add a score function test against two variables from two data sets
- [ ] filter : a number is out of range (e.g. mileage < 0)
- [ ] count of yesterday's record > today + 10%
- [x] count of null fields > amount
- [ ] clean up code
- [ ] create generic sql test
- [ ] cross environment test execution (e.g. a table in a database and a file in parquet)
"raw-query-test-example" : {
"description" : "NOT IMPLEMENTED!! example of a raw sql test",
"test_type" : "custom_sql",
"table" : "cinema-file",
"sql_code" : "select count(1) error_cells from cinema where cinema_id < 1000",
"validation" : "df['error_cells] < 100"

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