add test for incorrect parsing for MeterValue

Author: bespaltovyj

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/MeterValueTests.java

@@ -58,6 +58,12 @@ void getValueForTimerWhenFromNumberShouldReturnMsToNanosValue() {
 		assertThat(meterValue.getValue(Type.TIMER)).isEqualTo(123000000);
 	}
 
+	@Test
+	void getValueForTimerWhenFromNumberStringShouldReturnMsToNanosValue() {
+		MeterValue meterValue = MeterValue.valueOf("123d");
+		assertThat(meterValue.getValue(Type.TIMER)).isEqualTo(1.06E+16);
+	}
+
 	@Test
 	void getValueForTimerWhenFromNumberStringShouldMsToNanosValue() {
 		MeterValue meterValue = MeterValue.valueOf("123");