Every phase must be idempotent

[aldrichtr]

Defining idempotency

When running Invoke-Build, any phase that is called will not alter the project if no changes are made in between each successive call.

Validate

• Only create directories if they are not already present in the project
• Only install required modules if they are not already present in the project

Initialize

Compile

Test

• Only run the tests if any file in source or test has changed since the last test

Build

• Only build the module if a source file has changed since the last build and the files exist in staging #82
  • If any source file has changed
  • If any file no longer exists in staging