Package ru.vyarus.dropwizard.guice.test.util

Class PrintUtils

  • public final class PrintUtils
extends java.lang.Object
    Utilities for test console reports formatting.
    Since:
    12.02.2025

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.String formatMetric​(double time)
      Time assumed to come from metrics snapshot.
      static java.lang.String formatMetric​(double time, java.util.concurrent.TimeUnit unit)
      Formats time, obtained from metrics snapshot to target unit.
      static java.lang.String formatMs​(long nanos, int precision)
      Format nano value in milliseconds with required precision (decimal numbers).
      static java.lang.String getPerformanceReportSeparator​(org.junit.jupiter.api.extension.ExtensionContext context)
      Universal header string for performance reports in test to clearly identify current context.
      static java.lang.String identity​(java.lang.Object object)
      This is the same string as shown in the default Object.toString (@hash part).
      static java.lang.String ms​(long nanos)  
      static java.lang.String ms​(java.time.Duration duration)
      Render duration in milliseconds (2 decimal signs precision).
      static java.lang.String renderTime​(java.time.Duration overall, java.time.Duration increase)
      Render duration together with increase indication: overall time (increase since last report).
      static java.lang.String[] toStringArguments​(java.lang.Object[] args, int maxLength)
      Converts arguments to string.
      static java.lang.String toStringValue​(java.lang.Object value, int maxLength)
      Converts any value (object) to string.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • identity

        public static java.lang.String identity​(java.lang.Object object)
        This is the same string as shown in the default Object.toString (@hash part).
        Parameters:
        object - object to get identity for
        Returns:
        object identity string

      • toStringArguments

        public static java.lang.String[] toStringArguments​(java.lang.Object[] args,
                                                   int maxLength)
        Converts arguments to string.
        Parameters:
        args - arguments
        maxLength - maximum string length to keep (longer strings get truncated)
        Returns:
        string representation of incoming arguments

      • toStringValue

        public static java.lang.String toStringValue​(java.lang.Object value,
                                             int maxLength)
        Converts any value (object) to string. Rules: - Primitive values, number and booleans stored as is - String values could be truncated - Objects represented as ObjectType@instanceHash - null is "null"
        Parameters:
        value - value to convert to string
        maxLength - maximum string length to keep
        Returns:
        string representation for the object

      • renderTime

        public static java.lang.String renderTime​(java.time.Duration overall,
                                          java.time.Duration increase)
        Render duration together with increase indication: overall time (increase since last report).
        Parameters:
        overall - overall duration (including increase) (could be null)
        increase - increase since last report (could be null)
        Returns:
        string representation for suration

      • ms

        public static java.lang.String ms​(java.time.Duration duration)
        Render duration in milliseconds (2 decimal signs precision).
        Parameters:
        duration - duration
        Returns:
        string representation

      • ms

        public static java.lang.String ms​(long nanos)
        Parameters:
        nanos - time in nanoseconds
        Returns:
        string representation

      • formatMs

        public static java.lang.String formatMs​(long nanos,
                                        int precision)
        Format nano value in milliseconds with required precision (decimal numbers).
        Parameters:
        nanos - value in nanoseconds
        precision - required precision (decimal numbers)
        Returns:
        formatted value

      • formatMetric

        public static java.lang.String formatMetric​(double time)
        Time assumed to come from metrics snapshot.
        Parameters:
        time - time to format
        Returns:
        string representation (in ms)

      • formatMetric

        public static java.lang.String formatMetric​(double time,
                                            java.util.concurrent.TimeUnit unit)
        Formats time, obtained from metrics snapshot to target unit.
        Parameters:
        time - time to format
        unit - target unit
        Returns:
        string representation (in selected unit)

      • getPerformanceReportSeparator

        public static java.lang.String getPerformanceReportSeparator​(org.junit.jupiter.api.extension.ExtensionContext context)
        Universal header string for performance reports in test to clearly identify current context.
        Parameters:
        context - junit context
        Returns:
        performance report header