fix(shinytest2): Fix broken shinytest2 testing; Legacy muffle expectation and muffled snapshot_fail support #2294
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While we don't support `continue_test` directly, it has the same intent as `muffle_expectation` as it was the previous name. So support it in the handler.
… and return `TRUE`
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schloerke
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Nov 21, 2025
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| 4: expectation("failure", message, srcref = srcref, trace = trace) | ||
| 5: exp_signal(exp) | ||
| 6: withRestarts(if (expectation_broken(exp)) { | ||
| stop(exp) | ||
| } else { | ||
| signalC | ||
| 7: withRestartList(expr, restarts) | ||
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| 1: f() | ||
| 2: expect_true(FALSE) | ||
| 3: expect_waldo_constant_(act, exp, info = info, ignore_attr = TRUE) | ||
| 4: fail(msg, info = info, trace_env = trace_env) | ||
| 5: expectation("failure", message, srcref = srcref, trace = trace) | ||
| 6: exp_signal(exp) | ||
| 7: withRestarts(if (expectation_broken(exp)) { | ||
| stop(exp) | ||
| } else { | ||
| signalC | ||
| 8: withRestartList(expr, restarts) |
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I don't know why this change is necessary for the PR.
Did I do something odd to require the change?
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I think DebugReporter automatically trims off some number of frames to avoid showing too much testthat machinery. You wouldn't think that your change would affect this but I'm pretty sure withRestarts(code, a, b) is implemented as withRestarts(withRestarts(code, a), b) internally. Let me see if I can tweak some magic numbers somewhere.
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Only took like 4 tries but I figured it out.
schloerke
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This was referenced Nov 21, 2025
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Thank you! |
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Fixes #2293
Fixes #2288
shinytest2::AppDriver$expect_values()takes a snapshot of the values received from Shiny. No problems.However, it also takes a screenshot snapshot of the app at the time of the values. This extra snapshot is added for git tracking purposes, not unit testing. This snapshot should never fail.
When
return(snapshot_fail())expectation was muffled, the return was equivalent toreturn(invisible())which is a NULL value. The fix is to not immediately return and to carry on as iffail_on_new == FALSE