How to use

set

method

in

android.os.SystemProperties

/**
 * Overrides the system property for testing. Similar to the Android implementation, the value
 * may be coerced to other types like boolean or long depending on the get method that is used.
 *
 * <p>Note: Use {@link org.robolectric.shadows.ShadowBuild} instead for changing fields in
 * {@link android.os.Build}.
 */
public static void override(String key, String val) {
 SystemProperties.set(key, val);
}

@Test
public void set() {
 assertThat(SystemProperties.get("newkey")).isEqualTo("");
 SystemProperties.set("newkey", "val");
 assertThat(SystemProperties.get("newkey")).isEqualTo("val");
 SystemProperties.set("newkey", null);
 assertThat(SystemProperties.get("newkey")).isEqualTo("");
}

/**
 * Overrides the system property for testing. Similar to the Android implementation, the value
 * may be coerced to other types like boolean or long depending on the get method that is used.
 *
 * <p>Note: Use {@link org.robolectric.shadows.ShadowBuild} instead for changing fields in
 * {@link android.os.Build}.
 */
public static void override(String key, String val) {
 SystemProperties.set(key, val);
}