Set LANGUAGE env variable in TestDiffProgram for consistent locale behavior

Signed-off-by: Arthur Diniz <[email protected]>

Author: arthurbdiniz

staging/src/k8s.io/kubectl/pkg/cmd/diff/diff_test.go

@@ -64,6 +64,7 @@ func TestDiffProgram(t *testing.T) {
 	externalDiffCommands := [3]string{"diff", "diff -ruN", "diff --report-identical-files"}
 
 	t.Setenv("LANG", "C")
+	t.Setenv("LANGUAGE", "en_US")
 
 	for i, c := range externalDiffCommands {
 		t.Setenv("KUBECTL_EXTERNAL_DIFF", c)