restrict unix integration-tests to run on linux only (#6397)

integration-tests/README.md

@@ -12,6 +12,8 @@ Execute the integration tests using the following command:
 
 `go run .`
 
+**_NOTE:_** The tests don't run on Windows. If you want to run the tests on Linux, you need to set the environment variable OTEL_EXPORTER_ENDPOINT=172.17.0.1:4318.
+
 ### Flags
 
 * `--skip-build`: Run the integration tests without building the agent (default: `false`)

integration-tests/tests/unix/unix_metrics_test.go

@@ -1,4 +1,4 @@
-//go:build !windows
+//go:build linux
 
 package main
 

integration-tests/utils.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strings"
 	"sync"
 )
 
@@ -122,6 +123,10 @@ func reportResults() {
 	// If the channel would not be closed, the for loop would wait forever.
 	close(logChan)
 	for log := range logChan {
+		if strings.Contains(log.TestOutput, "build constraints exclude all Go files") {
+			fmt.Printf("Test %q is not applicable for this OS, ignoring\n", log.TestDir)
+			continue
+		}
 		fmt.Printf("Failure detected in %s:\n", log.TestDir)
 		fmt.Println("Test output:", log.TestOutput)
 		fmt.Println("Agent logs:", log.AgentLog)