test: sharpen button label unit test

Using different strings for the device tree node labels and the label
property of buttons sharpens the button label unit test.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
diff --git a/arch/sandbox/dts/sandbox.dtsi b/arch/sandbox/dts/sandbox.dtsi
index c76ecc0..0faad3f 100644
--- a/arch/sandbox/dts/sandbox.dtsi
+++ b/arch/sandbox/dts/sandbox.dtsi
@@ -18,14 +18,14 @@
 	buttons {
 		compatible = "gpio-keys";
 
-		summer {
+		btn1 {
 			gpios = <&gpio_a 3 0>;
-			label = "summer";
+			label = "button1";
 		};
 
-		christmas {
+		btn2 {
 			gpios = <&gpio_a 4 0>;
-			label = "christmas";
+			label = "button2";
 		};
 	};
 
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index c7d1376..fa84b2c 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -55,14 +55,14 @@
 	buttons {
 		compatible = "gpio-keys";
 
-		summer {
+		btn1 {
 			gpios = <&gpio_a 3 0>;
-			label = "summer";
+			label = "button1";
 		};
 
-		christmas {
+		btn2 {
 			gpios = <&gpio_a 4 0>;
-			label = "christmas";
+			label = "button2";
 		};
 	};
 
diff --git a/test/dm/button.c b/test/dm/button.c
index 9117801..ecaa47c 100644
--- a/test/dm/button.c
+++ b/test/dm/button.c
@@ -57,17 +57,17 @@
 {
 	struct udevice *dev, *cmp;
 
-	ut_assertok(button_get_by_label("summer", &dev));
+	ut_assertok(button_get_by_label("button1", &dev));
 	ut_asserteq(1, device_active(dev));
 	ut_assertok(uclass_get_device(UCLASS_BUTTON, 1, &cmp));
 	ut_asserteq_ptr(dev, cmp);
 
-	ut_assertok(button_get_by_label("christmas", &dev));
+	ut_assertok(button_get_by_label("button2", &dev));
 	ut_asserteq(1, device_active(dev));
 	ut_assertok(uclass_get_device(UCLASS_BUTTON, 2, &cmp));
 	ut_asserteq_ptr(dev, cmp);
 
-	ut_asserteq(-ENODEV, button_get_by_label("spring", &dev));
+	ut_asserteq(-ENODEV, button_get_by_label("nobutton", &dev));
 
 	return 0;
 }
diff --git a/test/py/tests/test_button.py b/test/py/tests/test_button.py
index 98067a9..eadd9dd 100644
--- a/test/py/tests/test_button.py
+++ b/test/py/tests/test_button.py
@@ -11,7 +11,7 @@
     expected_response = 'rc:0'
     response = u_boot_console.run_command('button list; echo rc:$?')
     assert(expected_response in response)
-    response = u_boot_console.run_command('button summer; echo rc:$?')
+    response = u_boot_console.run_command('button button1; echo rc:$?')
     assert(expected_response in response)
 
     expected_response = 'rc:1'