fix benchmarks

Author: DavidBadura

Diff for: Makefile

@@ -68,11 +68,17 @@ test: phpunit
 benchmark: vendor                                                               ## run benchmarks
 	DB_URL=sqlite3:///:memory: vendor/bin/phpbench run tests/Benchmark --report=default
 
-.PHONY: benchmark-diff-test
-benchmark-diff-test: vendor                                                   	## run benchmarks
+.PHONY: benchmark-base
+benchmark-base: vendor                                                   	## run benchmarks
 	DB_URL=sqlite3:///:memory: vendor/bin/phpbench run tests/Benchmark --revs=1 --report=default --progress=none --tag=base
+
+.PHONY: benchmark-diff
+benchmark-diff: vendor                                                   	## run benchmarks
 	DB_URL=sqlite3:///:memory: vendor/bin/phpbench run tests/Benchmark --revs=1 --report=diff --progress=none --ref=base
 
+.PHONY: benchmark-diff-test
+benchmark-diff-test: benchmark-base benchmark-diff                                                	## run benchmarks
+
 .PHONY: dev
 dev: static test                                                                ## run dev tools
 

Diff for: phpbench.json

@@ -43,7 +43,7 @@
                   "partition": "subject_name",
                   "cols":
                   {
-                    "time-diff": "percent_diff(partition['result_time_avg'][1], partition['result_time_avg'][0])"
+                    "time-diff": "percent_diff(coalesce(partition['result_time_avg']?[1], 0), coalesce(partition['result_time_avg']?[0], 0))"
                   }
                 },
                 "memory":
@@ -61,7 +61,7 @@
                   "partition": "subject_name",
                   "cols":
                   {
-                    "memory-diff": "percent_diff(partition['result_mem_peak'][1], partition['result_mem_peak'][0])"
+                    "memory-diff": "percent_diff(coalesce(partition['result_mem_peak']?[1], 0), coalesce(partition['result_mem_peak']?[0], 0))"
                   }
                 }
               }