test: improve the compare.sh script (#1683)

bin/compare.sh

@@ -6,39 +6,28 @@ set -ue
 export ENV_DIR=$PWD/tests/fixtures
 
 readonly templateArgs="$@"
-readonly currentBranch=$(git rev-parse --abbrev-ref HEAD)
-readonly compareBranch='main'
+readonly branchA='main'
+# branchB current branch
+readonly branchB=$(git rev-parse --abbrev-ref HEAD)
 
-targetDirA="tmp/${currentBranch}"
-targetDirB="tmp/${compareBranch}"
+targetDirA="tmp/${branchA}"
+targetDirB="tmp/${branchB}"
 
 export NODE_ENV=test
-helmfile template $templateArgs --output-dir-template="../$targetDirA/{{.Release.Namespace}}-{{.Release.Name }}"
+helmfile template $templateArgs --output-dir-template="../$targetDirB/{{.Release.Namespace}}-{{.Release.Name }}"
 
-git checkout $compareBranch
-helmfile template $templateArgs --output-dir-template="../$targetDirB/{{.Release.Namespace}}-{{.Release.Name}}"
-git checkout $currentBranch
+git checkout $branchA
+# we remove previously rendered manifests so they are not mixed up with newly rendered
+rm -rf $targetDirA
+helmfile template $templateArgs --output-dir-template="../$targetDirA/{{.Release.Namespace}}-{{.Release.Name}}"
+git checkout $branchB
 
-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
+# order of arguments matters so new chanages are green color
+bin/dyff.sh $targetDirA $targetDirB
 
 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 "# You can also select two directories in VSCode $targetDirB and $targetDirA and right click and select the 'Compare selected folders' option"
 echo "#"
 echo "#########################################################"

bin/dyff.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+set -ue
+
+targetDirA=$1
+targetDirB=$2
+
+set +e
+diff_output=$(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)
+
+    [ ! -f $second_path ] && echo "New file added: $first_path" && continue
+    [ ! -f $first_path ] && echo "Old file deleted: $second_path" && continue
+
+    # Use dyff to compare the files
+    dyff between "$second_path" "$first_path" --omit-header \
+      --exclude "data.tls.key" --exclude "/data/ca.crt" --exclude "/data/tls.crt" --exclude "/data/tls.key" \
+      --exclude-regexp "/checksum" --exclude-regexp "/webhooks.*"
+  fi
+done