Fix test package format

Author: marc-gr

internal/formatter/yaml_formatter.go

@@ -16,7 +16,7 @@ import (
 // The function is exposed, so it can be used by other internal packages.
 func YAMLFormatter(content []byte) ([]byte, bool, error) {
 // yaml.Unmarshal() requires `yaml.Node` to be passed instead of generic `interface{}`.
-// Otherwise it can detect any comments and fields are considered as normal map.
+// Otherwise it can't detect any comments and fields are considered as normal map.
 var node yaml.Node
 err := yaml.Unmarshal(content, &node)
 if err != nil {
@@ -31,5 +31,11 @@ func YAMLFormatter(content []byte) ([]byte, bool, error) {
 return nil, false, errors.Wrap(err, "marshalling YAML node failed")
 }
 formatted := b.Bytes()
+
+// required to preserve yaml files starting with "---" as yaml.Encoding strips them
+if bytes.HasPrefix(content, []byte("---\n")) {
+formatted = append([]byte("---\n"), formatted...)
+}
+
 return formatted, string(content) == string(formatted), nil
 }

test/packages/benchmarks/system_benchmark/_dev/benchmark/system/20mb-logs-benchmark.yml

@@ -1,5 +1,5 @@
 ---
-description: Benchmark 100MiB of data ingested
+description: Benchmark 20MiB of data ingested
 input: filestream
 vars: ~
 data_stream.name: testds
@@ -9,4 +9,4 @@ warmup_time_period: 10s
 corpora.generator.size: 20MiB
 corpora.generator.template.path: ./20mb-logs-benchmark/template.log
 corpora.generator.config.path: ./20mb-logs-benchmark/config.yml
-corpora.generator.fields.path: ./20mb-logs-benchmark/fields.yml
+corpora.generator.fields.path: ./20mb-logs-benchmark/fields.yml

test/packages/benchmarks/system_benchmark/_dev/benchmark/system/20mb-logs-benchmark/config.yml

@@ -15,7 +15,7 @@
  min: 10
  max: 59
 - name: Mon
- enum: 
+ enum:
  - "Jan"
  - "Feb"
  - "Mar"
@@ -37,4 +37,4 @@
 - name: Port
  range:
  min: 8000
- max: 8080
+ max: 8080

test/packages/benchmarks/system_benchmark/_dev/benchmark/system/20mb-logs-benchmark/fields.yml

@@ -15,4 +15,4 @@
 - name: Hostname
  type: keyword
 - name: Port
- type: long
+ type: long