mirror of https://github.com/pulumi/pulumi.git
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The Pulumi CLI supports rendering operations in a number of ways, such as interactively to the console, or as streams of JSON events. The tree renderer is one of Pulumi's interactive options, writing trees of parent and child resources to the terminal as an operation progresses. This commit pulls out part of #16094 in order to improve the tree renderer in two ways: * When the number of lines rendered decreases between renders, old lines that should no longer be visible must be overwritten. The previous implementation was buggy in that it did not take system messages into account when doing this. This commit does. * When writing system messages, the previous implementation did not trim output to the terminal width. This commit does. With no additional changes, these fixes result in changes to the golden test outputs we maintain as part of the display tests that are not ASCII-visible. To rectify this and hopefully make these tests more understandable, this commit also introduces a `mockTermInfo` terminal info implementation that explicitly prints otherwise-invisible terminal codes such as "hide cursor", "move cursor up 2 lines" and so on. Moreover, this commit has been manually testing with a number of real Pulumi CLI operations to try and avoid breakage of the display. |
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