refactor(completion): move the shell test harness out of completion/

Packaging globs completion/ into the release archives, so the harness
added alongside the engine was about to ship run.sh and five wrapper
scripts to every user. The previous commit worked around it by listing
the packaged directories one by one, which quietly stops packaging any
shell added later.

Moving the harness to testdata/completion/ leaves completion/ holding
only what we ship, so the glob can go back to completion/**/* and needs
no maintenance when a shell is added.

.goreleaser.yml

@@ -43,12 +43,7 @@ archives:
     files:
       - README.md
       - LICENSE
-      - completion/bash/*
-      - completion/fish/*
-      - completion/nu/*
-      - completion/ps/*
-      - completion/zsh/*
-      - completion/legacy/**/*
+      - completion/**/*
     format_overrides:
       - goos: windows
         formats: [zip]

Taskfile.yml

@@ -164,8 +164,9 @@ tasks:
       - internal/complete/**/*.go
       - cmd/task/**/*.go
       - completion/**/*
+      - testdata/completion/*
     cmds:
-      - bash completion/tests/run.sh
+      - bash testdata/completion/run.sh
 
   goreleaser:test:
     desc: Tests release process without publishing

testdata/completion/wrapper.bash

@@ -22,7 +22,7 @@ _filedir() { CAP+="filedir:$* cur=$cur"$'\n'; }
 compopt() { CAP+="compopt:$*"$'\n'; }
 __ltrim_colon_completions() { :; }
 
-source "$(dirname "${BASH_SOURCE[0]}")/../bash/task.bash"
+source "$(dirname "${BASH_SOURCE[0]}")/../../completion/bash/task.bash"
 
 run() {
   CAP=""

testdata/completion/wrapper.fish

@@ -3,7 +3,7 @@
 # Set up by run.sh: TASK_FIXTURE, and `task` on PATH = the binary under test.
 
 cd $TASK_FIXTURE
-source (dirname (status -f))/../fish/task.fish
+source (dirname (status -f))/../../completion/fish/task.fish
 
 set -g fails 0
 

testdata/completion/wrapper.nu

@@ -4,7 +4,7 @@
 # Set up by run.sh: $env.TASK_FIXTURE, and `task` on PATH = the binary under test.
 
 # `source` needs a parse-time constant path.
-const TASK_NU = (path self "../nu/task-completions.nu")
+const TASK_NU = (path self "../../completion/nu/task-completions.nu")
 
 # Installed before the wrapper is sourced, to assert the delegation path.
 $env.config.completions.external.completer = {|spans| [{ value: $"prev:($spans | first)" }] }

testdata/completion/wrapper.ps1

@@ -3,7 +3,7 @@
 # the binary under test.
 
 Set-Location $env:TASK_FIXTURE
-. "$PSScriptRoot/../ps/task.ps1"
+. "$PSScriptRoot/../../completion/ps/task.ps1"
 
 $fails = 0
 

testdata/completion/wrapper.zsh

@@ -29,7 +29,7 @@ _files()      { CAP+="files:$*"$'\n' }
 _path_files() { CAP+="path_files:$*"$'\n' }
 
 # Sourcing avoids the autoload first-call quirk; `compdef` is stubbed above.
-source ${0:A:h}/../zsh/_task
+source ${0:A:h}/../../completion/zsh/_task
 
 run() {
     CAP=""