Fix TestSystemLogsCanUseLogInput and run it on all OSes

Fix TestSystemLogsCanUseLogInput and move it to a file without the
linux build constraint so it can run on all OSes supported by the
system integration.

filebeat/tests/integration/systemlogs_test.go → filebeat/tests/integration/systemlogs_linux_test.go

@@ -27,7 +27,6 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"path"
 	"path/filepath"
 	"testing"
 	"time"
@@ -150,32 +149,6 @@ func findFilesetNames(t *testing.T, outputGlob string) func() bool {
 	return f
 }
 
-func TestSystemLogsCanUseLogInput(t *testing.T) {
-	filebeat := integration.NewBeat(
-		t,
-		"filebeat",
-		"../../filebeat.test",
-	)
-	workDir := filebeat.TempDir()
-	copyModulesDir(t, workDir)
-
-	logFilePath := path.Join(workDir, "syslog")
-	integration.GenerateLogFile(t, logFilePath, 5, false)
-	yamlCfg := fmt.Sprintf(systemModuleCfg, logFilePath, workDir)
-
-	filebeat.WriteConfigFile(yamlCfg)
-	filebeat.Start()
-
-	filebeat.WaitForLogs(
-		"using log input because file(s) was(were) found",
-		10*time.Second,
-		"system-logs did not select the log input")
-	filebeat.WaitForLogs(
-		"Harvester started for paths:",
-		10*time.Second,
-		"system-logs did not start the log input")
-}
-
 func copyModulesDir(t *testing.T, dst string) {
 	pwd, err := os.Getwd()
 	if err != nil {

filebeat/tests/integration/systemlogs_other_test.go

@@ -0,0 +1,55 @@
+// Licensed to Elasticsearch B.V. under one or more contributor
+// license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright
+// ownership. Elasticsearch B.V. licenses this file to you under
+// the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+//go:build integration
+
+package integration
+
+import (
+	"fmt"
+	"path"
+	"testing"
+	"time"
+
+	"github.com/elastic/beats/v7/libbeat/tests/integration"
+)
+
+func TestSystemLogsCanUseLogInput(t *testing.T) {
+	filebeat := integration.NewBeat(
+		t,
+		"filebeat",
+		"../../filebeat.test",
+	)
+	workDir := filebeat.TempDir()
+	copyModulesDir(t, workDir)
+
+	logFilePath := path.Join(workDir, "syslog")
+	integration.GenerateLogFile(t, logFilePath, 5, false)
+	yamlCfg := fmt.Sprintf(systemModuleCfg, logFilePath, logFilePath, workDir)
+
+	filebeat.WriteConfigFile(yamlCfg)
+	filebeat.Start()
+
+	filebeat.WaitForLogs(
+		"using log input because file(s) was(were) found",
+		10*time.Second,
+		"system-logs did not select the log input")
+	filebeat.WaitForLogs(
+		"Harvester started for paths:",
+		10*time.Second,
+		"system-logs did not start the log input")
+}