Advanced Test completion

[AlexanderSashchenko]

Here are described workflows implemented to fit all technical rquirements for Advanced test accordingly:
I) Implemented generateChangelog test in AdvancedTest.groovy. Workflow::
1) Execute Liquibase update command;
2) Execute Liquibase generateChangelog command
3) Validate generated changelog by checking for presence of change type name in initial changelog and generated changelog for .xml, .yml, .json.. For .sql changelog we check for full equality of sql statements in generated changelog and initial changelog.
4) Rollback changes
5) Repeat consiquently for all four fie formats.

II) Implemented diffChangelog test DiffCommandTest.groovy. Workflow for diffChangelog test:
1) Execute Liquibase update command against target database
2) Execute Liquibase diffChangelog command for all four file formats
3) Validate generated diffChangelog (expected to find opposite change type to one in original changelog: e.g. createTable -> dropTable (drop table for .sql), createView -> dropView (drop view for .sql), addForeignKey -> dropForeignKey etc. (drop constraint for .sql))
4) Rollback changes

III) Modified diff test in DiffCommandTest.groovy. Current workflow:
1) Execute Liquibase update command against target database (target and reference databases are of the same type)
2) Execute Liquibase diff command and obtain diff content in .txt
3) Compare generated diff content to expected diff content (full equality comparison)
4) Rollback changes

IV) Modified Snapshot test in SnapshotObjectTest.groovy. Current workflow:
1) Execute Liquibase snapshot command
2) Execute Liquibase snapshot command (.json format)
3) Compare generated snapshot to expected snapshot snippet (Comparison checks for presence of objects from expected snapshot snippet in generated snapshot)
4) Rollback changes

V) Stress test (was implemented in previous version in AdvancedTest.groovy):
1) Run consiquently Liquibase update command that creates a table with 50 columns, inserts 10k rows into it, updates data in all rows, selects all data
2) Track execution time of all operations
2) Rollback changes

As a result current version of Advanced test consists of 3 parts:
AdvancedTest.grovvy (Stress test and generateChangelog command test) <-
DiffCommandTest (diffChangelog command test and diff command test)
SnapshotObjectTest.groovy (Snapshot command test)

All these parts will be united and run in a singe test suite.

[PavloTytarchuk]

Green build for advanced test run: https://github.com/liquibase/liquibase-test-harness/actions/runs/3758151094

CC :: @KushnirykOleh