Reduce timeout for unit tests.

Author: jefchien

Makefile

@@ -199,7 +199,7 @@ lint: install-golangci-lint simple-lint
 	${LINTER} run ./...
 
 test:
-	CGO_ENABLED=0 go test -timeout 15m -coverprofile coverage.txt -failfast ./...
+	CGO_ENABLED=0 go test -timeout 10m -parallel 4 -coverprofile coverage.txt -failfast ./...
 
 # List of existing packages with data races
 # TODO: Fix each
@@ -214,7 +214,7 @@ PKG_WITH_DATA_RACE += plugins/outputs/cloudwatch$$
 PKG_WITH_DATA_RACE += plugins/processors/ec2tagger
 PKG_WITH_DATA_RACE_PATTERN := $(shell echo '$(PKG_WITH_DATA_RACE)' | tr ' ' '|')
 test-data-race:
-	CGO_ENABLED=1 go test -timeout 15m -race -parallel 4 $(shell go list ./... | grep -v -E '$(PKG_WITH_DATA_RACE_PATTERN)')
+	CGO_ENABLED=1 go test -timeout 10m -race -parallel 4 $(shell go list ./... | grep -v -E '$(PKG_WITH_DATA_RACE_PATTERN)')
 
 clean::
 	rm -rf release/ build/

plugins/inputs/logfile/tail/tail_test.go

@@ -377,6 +377,7 @@ func TestConcurrentLinePoolAccess(t *testing.T) {
 	wg.Add(1)
 	go func() {
 		defer wg.Done()
+		defer close(linesChan)
 		for i := 0; i < numLines; i++ {
 			select {
 			case line := <-tail.Lines:
@@ -386,7 +387,6 @@ func TestConcurrentLinePoolAccess(t *testing.T) {
 				return
 			}
 		}
-		close(linesChan)
 	}()
 
 	numWorkers := 5