Cabal: Honour -working-dir flag when running test executables

A simple fix to run the test executable in the `-working-dir`.

Fixes haskell#10704

Cabal/src/Distribution/Simple/Test/ExeV10.hs

@@ -125,13 +125,16 @@ runTest pkg_descr lbi clbi hpcMarkupInfo flags suite = do
         -- drain the output.
         evaluate (force logText)
 
+  let mbWorkDir = interpretSymbolicPathCWD
+                    <$> flagToMaybe (setupWorkingDir (testCommonFlags flags))
+
   (exit, logText) <- case testWrapper flags of
     Flag path ->
       rawSystemIOWithEnvAndAction
         verbosity
         path
         (cmd : opts)
-        Nothing
+        mbWorkDir
         (Just shellEnv')
         getLogText
         -- these handles are automatically closed
@@ -143,7 +146,7 @@ runTest pkg_descr lbi clbi hpcMarkupInfo flags suite = do
         verbosity
         cmd
         opts
-        Nothing
+        mbWorkDir
         (Just shellEnv')
         getLogText
         -- these handles are automatically closed

cabal-testsuite/PackageTests/TestChangeDir/cabal.project

@@ -0,0 +1 @@
+packages: regression-simple

cabal-testsuite/PackageTests/TestChangeDir/cabal.test.hs

@@ -0,0 +1,5 @@
+import Test.Cabal.Prelude
+
+main = cabalTest . recordMode DoNotRecord $ do
+    -- Building a target that contains whitespace
+    cabal "test" ["regression-simple"]

cabal-testsuite/PackageTests/TestChangeDir/regression-simple/CHANGELOG.md

@@ -0,0 +1,5 @@
+# Revision history for regression-simple
+
+## 0.1.0.0 -- YYYY-mm-dd
+
+* First version. Released on an unsuspecting world.

cabal-testsuite/PackageTests/TestChangeDir/regression-simple/do-i-exist.txt

@@ -0,0 +1 @@
+I exist

cabal-testsuite/PackageTests/TestChangeDir/regression-simple/regression-simple.cabal

@@ -0,0 +1,19 @@
+cabal-version:   3.14
+name:            regression-simple
+version:         0.1.0.0
+license:         NONE
+author:          Matthew Pickering
+maintainer:      [email protected]
+build-type:      Simple
+extra-doc-files: CHANGELOG.md
+
+common warnings
+    ghc-options: -Wall
+
+test-suite regression-simple-test
+    import:           warnings
+    default-language: Haskell2010
+    type:             exitcode-stdio-1.0
+    hs-source-dirs:   test
+    main-is:          Main.hs
+    build-depends:    base ^>=4.20.0.0

cabal-testsuite/PackageTests/TestChangeDir/regression-simple/test/Main.hs

@@ -0,0 +1,4 @@
+module Main (main) where
+
+main :: IO ()
+main = readFile "do-i-exist.txt" >>= print