use render method for jinja template, add unit tests #493
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Fixes #490
Problem
We changed from using simple python string templates to jinja templates, but missed a few places (
ConditionalLLMBlock) to account for this change, which went unnoticed due to missing test coverage for this.The Solution
.format()to.render(), treating the input to_format_prompt()as a jinjaTemplatetest_format_prompt_with_jinja_templatesandtest_format_prompt_without_selectorthat test the behavior ofTemplate.render()based on the inputs. These tests will fail if there are parts of the code that call to_format_prompt()with a python string argument.