CI jobs have no $USER, fix tests

env_test.go

@@ -7,17 +7,31 @@ import (
 )
 
 func TestEnvironment(t *testing.T) {
+	key := "USER"
+	if testInPipeline() {
+		key = "CI"
+	}
+
 	testProvider(t, Environment(),
 		testProviderCase{
-			Key:  "USER",
+			Key:  key,
 			Test: testNotEmpty,
 		})
 }
 
 func TestEnvironmentPrefix(t *testing.T) {
-	testProvider(t, EnvironmentPrefix("US"),
+	var (
+		prefix = "US"
+		key    = "ER"
+	)
+	if testInPipeline() {
+		prefix = "CI_"
+		key = "JOB_ID"
+	}
+
+	testProvider(t, EnvironmentPrefix(prefix),
 		testProviderCase{
-			Key:  "ER",
+			Key:  key,
 			Test: testNotEmpty,
 		})
 }

provider_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"os"
 	"testing"
 )
 
@@ -63,3 +64,7 @@ func testEqual(a []byte) func([]byte) error {
 func testEqualString(a string) func([]byte) error {
 	return testEqual([]byte(a))
 }
+
+func testInPipeline() bool {
+	return os.Getenv("CI") != ""
+}