ActivityBenchmarks.java

package dk.ilios.spanner.example;

import java.io.File;

import dk.ilios.spanner.AfterExperiment;
import dk.ilios.spanner.BeforeExperiment;
import dk.ilios.spanner.Benchmark;
import dk.ilios.spanner.BenchmarkConfiguration;
import dk.ilios.spanner.Param;
import dk.ilios.spanner.SpannerConfig;

public class ActivityBenchmarks {

    private File filesDir = MyApplication.getContext().getFilesDir();
    private File resultsDir = new File(filesDir, "results");
    private File baseLineFile = Utils.copyFromAssets("baseline.json");

    @BenchmarkConfiguration
    public SpannerConfig configuration = new SpannerConfig.Builder()
            .saveResults(resultsDir, ActivityBenchmarks.class.getCanonicalName() + ".json")
            .useBaseline(baseLineFile)
            .medianFailureLimit(1.0f) // Accept 100% difference, normally should be 10-15%
            .uploadResults()
            .build();

    // Public test parameters (value chosen and injected by Experiment)
    @Param(value = {"java.util.Date", "java.lang.Object"})
    public String value;

    // Private fields used by benchmark methods
    private Class testClass;

    @BeforeExperiment
    public void before() {
        try {
            testClass = Class.forName(value);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
    }

    @AfterExperiment
    public void after() {

    }

    @Benchmark
    public boolean instanceOf(int reps) {
        boolean result = false;
        for (int i = 0; i < reps; i++) {
             result = (testClass instanceof Object);
        }
        return result;
    }

    @Benchmark
    public boolean directComparison(int reps) {
        boolean result = false;
        for (int i = 0; i < reps; i++) {
            result = testClass == Object.class;
        }
        return result;
    }

    @Benchmark
    public boolean equalsTo(int reps) {
        boolean result = false;
        for (int i = 0; i < reps; i++) {
            result = testClass.equals(Object.class);
        }
        return result;
    }
}