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Added in #24119, the test checks if every string produced is equal, but the value of the strings depend on the `now()` timestamp of when they were produced. 30 of them are produced in a for loop in sequence with each other, but the first one is set after the data is marshalled into and unmarshalled from a file. This means the timestamp strings can differ depending on the execution time and causes this test to be flaky. Instead we just make 2 strings from the same data and check if they equal each other.
55 lines
1.7 KiB
Nim
55 lines
1.7 KiB
Nim
# issue #12405
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import std/[marshal, streams, times, tables, os, assertions]
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type AiredEpisodeState * = ref object
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airedAt * : DateTime
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tvShowId * : string
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seasonNumber * : int
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number * : int
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title * : string
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type ShowsWatchlistState * = ref object
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aired * : seq[AiredEpisodeState]
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type UiState * = ref object
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shows: ShowsWatchlistState
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# Helpers to marshal and unmarshal
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proc load * ( state : var UiState, file : string ) =
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var strm = newFileStream( file, fmRead )
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strm.load( state )
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strm.close()
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proc store * ( state : UiState, file : string ) =
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var strm = newFileStream( file, fmWrite )
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strm.store( state )
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strm.close()
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# 1. We fill the state initially
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var state : UiState = UiState( shows: ShowsWatchlistState( aired: @[] ) )
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# VERY IMPORTANT: For some reason, small numbers (like 2 or 3) don't trigger the bug. Anything above 7 or 8 on my machine triggers though
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for i in 0..30:
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var episode = AiredEpisodeState( airedAt: now(), tvShowId: "1", seasonNumber: 1, number: 1, title: "string" )
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state.shows.aired.add( episode )
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# 2. Store it in a file with the marshal module, and then load it back up
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store( state, "tmarshalsegfault_data" )
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load( state, "tmarshalsegfault_data" )
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removeFile("tmarshalsegfault_data")
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# 3. VERY IMPORTANT: Without this line, for some reason, everything works fine
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state.shows.aired[ 0 ] = AiredEpisodeState( airedAt: now(), tvShowId: "1", seasonNumber: 1, number: 1, title: "string" )
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# 4. And formatting the airedAt date will now trigger the exception
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for ep in state.shows.aired:
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let x = $ep.seasonNumber & "x" & $ep.number & " (" & $ep.airedAt & ")"
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let y = $ep.seasonNumber & "x" & $ep.number & " (" & $ep.airedAt & ")"
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doAssert x == y
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