feat: add check for outdated generated code on terramate run

[katcipis]

Changed the design to make it easier to check only a specific set of stacks, was thinking way too much on terms of "check all the project", but that doesn't work well with cwd etc. Certainly space for future improvements, but should work. Here is an example script:

#!/bin/bash

set -o nounset

basedir=$(mktemp -d)

cd "${basedir}"

cat > terramate.tm.hcl <<- EOM
terramate {
  config {
  }
}
EOM

mkdir -p stacks/stack-1
terramate stacks init stacks/stack-1

mkdir -p stacks/stack-2
terramate stacks init stacks/stack-2


echo "terramate run: should work:"
echo

terramate run cat terramate.tm.hcl

echo

cat > stacks/stack-1/terramate.tm.hcl <<- EOM
stack {}

export_as_locals {
  path = terramate.path
}
EOM

echo
echo "terramate run: should fail for all stacks:"
echo

terramate run cat terramate.tm.hcl

echo
echo "terramate run: should fail for stack-1:"
echo

terramate run -C stacks/stack-1 cat terramate.tm.hcl

echo
echo "terramate run: should work for stack-2:"
echo

terramate run -C stacks/stack-2 cat terramate.tm.hcl

cat > stacks/stack-2/terramate.tm.hcl <<- EOM
stack {}

terramate {
  backend "test" {}
}

export_as_locals {
  path = terramate.path
}
EOM

echo
echo "terramate run: should fail for all stacks:"
echo

terramate run cat terramate.tm.hcl

echo
echo "terramate generate: updating code"

terramate generate

echo "terramate generate: code updated"
echo "terramate run: should work for all stacks:"
echo

terramate run cat terramate.tm.hcl

[codecov-commenter]

Codecov Report

Merging #163 (ba08bbb) into main (bbd81ea) will increase coverage by 0.15%.
The diff coverage is 56.31%.

@@            Coverage Diff             @@
##             main     #163      +/-   ##
==========================================
+ Coverage   61.41%   61.57%   +0.15%     
==========================================
  Files          29       29              
  Lines        4694     4734      +40     
==========================================
+ Hits         2883     2915      +32     
  Misses       1656     1656              
- Partials      155      163       +8     

Flag	Coverage Δ
tests	61.57% <56.31%> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cmd/terramate/cli/cli.go	0.00% <0.00%> (ø)
generate/generate.go	91.47% <74.46%> (-1.53%)	⬇️
metadata.go	94.11% <88.46%> (-5.89%)	⬇️
git/git.go	74.95% <0.00%> (+0.33%)	⬆️
stack/loader.go	60.37% <0.00%> (+9.43%)	⬆️
stack/stack.go	80.00% <0.00%> (+12.00%)	⬆️

---

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[mariux]

❤️