test: manifest compare utilities (#1664)

Author: j-zimnowoda

.gitignore

@@ -17,3 +17,4 @@ workflow/
 .envrc
 otomi.cpuprofile
 /.idea/
+tmp

bin/compare.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+set -ue
+
+# Usage: bin/compare.sh -l name=loki
+
+export ENV_DIR=$PWD/tests/fixtures
+
+readonly templateArgs="$@"
+readonly currentBranch=$(git rev-parse --abbrev-ref HEAD)
+readonly compareBranch='main'
+
+targetDirA="tmp/${currentBranch}"
+targetDirB="tmp/${compareBranch}"
+
+export NODE_ENV=test
+helmfile template $templateArgs --output-dir-template="../$targetDirA/{{.Release.Namespace}}-{{.Release.Name }}"
+
+git checkout $compareBranch
+helmfile template $templateArgs --output-dir-template="../$targetDirB/{{.Release.Namespace}}-{{.Release.Name}}"
+git checkout $currentBranch
+
+set +e
+diff_output=$(diff -q -r $targetDirA $targetDirB)
+set -e
+# Process each line of diff output
+
+echo "$diff_output" | while read -r line; do
+  # Check if the line indicates a difference
+  if [[ $line == *" and "* ]]; then
+    # Extract the paths using cut
+    first_path=$(echo $line | cut -d' ' -f2)
+    second_path=$(echo $line | cut -d' ' -f4)
+
+    # Use dyff to compare the files
+    dyff between "$first_path" "$second_path"
+  fi
+done
+
+echo "#########################################################"
+echo "#"
+echo "# Above YAML documents diff produced by dyff tool."
+echo "# You can also select two directories in VSCode $targetDirA and $targetDirB and right click and select the 'Compare selected folders' option"
+echo "#"
+echo "#########################################################"