UiTailTemplateSpec.hs

{- | The web UI's Tramaj templates: tail templates (feature 7fee51f2, the
pure contract in @salmon-ops\/ui\/tail-template.js@) and node card templates
(feature 458c16c8, @salmon-ops\/ui\/card-template.js@), evaluated with the
vendored tramaj-js, are checked by @salmon-ops\/ui-test\/*.test.mjs@ (unit
cases and seeded random properties; @SALMON_UI_TEST_SEED@ fixes the seed).
This runs those scripts under @node@, skipped loudly when @node@ is not on
PATH or the source tree is not next to the suite.
-}
module Test.UiTailTemplateSpec (tests) where

import Control.Monad (unless)
import System.Directory (doesFileExist)
import System.Exit (ExitCode (..))
import System.Process (proc, readCreateProcessWithExitCode)
import Test.Harness (requireExecutable)
import Test.Tasty (TestTree, testGroup)
import Test.Tasty.HUnit (assertFailure, testCase)

tests :: TestTree
tests =
    testGroup
        "web UI tail templates (node)"
        [ testCase "tail-template.js against tramaj-js: unit cases and properties" (runNodeSuite "tail-template")
        , testCase "card-template.js against tramaj-js: unit cases and properties" (runNodeSuite "card-template")
        ]

runNodeSuite :: String -> IO ()
runNodeSuite name = do
    let script = "../salmon-ops/ui-test/" <> name <> ".test.mjs"
    there <- doesFileExist script
    if not there
        then putStrLn ("SKIPPED: salmon-ops/ui-test is not next to the test suite; the " <> name <> " checks need the source tree")
        else requireExecutable "node" $ do
            -- stdin is "" (a pipe closed at once), never the suite's own
            (code, out, err) <- readCreateProcessWithExitCode (proc "node" [script]) ""
            unless (code == ExitSuccess) $
                assertFailure ("node " <> script <> " failed (" <> show code <> "):\n" <> out <> err)