FINERACT-2181: Use matrix jobs via Github Actions to improve performance

scripts/split-tests.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+# Usage: ./split-tests.sh <total-shards> <shard-index>
+set -e
+
+TOTAL_SHARDS=$1
+SHARD_INDEX=$2
+
+if [[ -z "$TOTAL_SHARDS" || -z "$SHARD_INDEX" ]]; then
+  echo "ERROR: You must provide <total-shards> and <shard-index>."
+  exit 1
+fi
+
+echo "🔍 Searching for eligible JUnit test classes..."
+
+ALL_TESTS=$(find . -type f -path "*/src/test/java/*Test.java" \
+  | while read filepath; do
+      filename=$(basename "$filepath")
+
+      # Skip abstract class or interface by name
+      if [[ "$filename" =~ ^Abstract.*Test\.java$ || "$filename" =~ .*AbstractTest\.java$ ]]; then
+        echo "Skipping abstract-named file: $filename" >&2
+        continue
+      fi
+
+      # Skip if file doesn't contain valid JUnit annotations
+      if ! grep -qE "@Test|@Nested|@ParameterizedTest" "$filepath"; then
+        continue
+      fi
+
+      # Extract module directory path (everything before /src/test/java)
+      module_path="${filepath%%/src/test/java/*}"
+      # Convert from ./custom/acme/loan/job to :custom:acme:loan:job
+      module_name=$(echo "$module_path" | sed 's|^\./||; s|/|:|g; s|^|:|')
+
+      # Extract fully qualified test class name
+      class_name=$(echo "$filepath" | sed 's|^.*src/test/java/||; s|/|.|g; s|.java$||')
+
+      echo "$module_name,$class_name"
+    done \
+  | sort)
+
+TOTAL_COUNT=$(echo "$ALL_TESTS" | wc -l)
+echo "Found $TOTAL_COUNT eligible test classes."
+
+SELECTED_CLASSES=$(echo "$ALL_TESTS" \
+  | awk -v ts="$TOTAL_SHARDS" -v si="$SHARD_INDEX" 'NR % ts == (si - 1)')
+
+OUTPUT_FILE="shard-tests_${SHARD_INDEX}.txt"
+echo "$SELECTED_CLASSES" > "$OUTPUT_FILE"
+
+echo "Selected $(wc -l < "$OUTPUT_FILE") classes for shard $SHARD_INDEX of $TOTAL_SHARDS:"
+cat "$OUTPUT_FILE"