benchmark task and format results for markdown table

runBenchmarks.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+FILE=/tmp/jsonpathlite
+FILE2=/tmp/jsonpathlite2
+./gradlew benchmark -DreadmeFormat > "$FILE"
+if [ $? -eq 0 ]; then
+  cat "$FILE" | sed 's/^ *//' | grep '^|' > "$FILE2"
+
+  # print path times
+  cat "$FILE2" | grep '^|  \$'
+  echo ''
+  # print compile times
+  cat "$FILE2" | grep -v '^|  \$'
+fi

src/test/kotlin/com/nfeld/jsonpathlite/BenchmarkTest.kt

@@ -8,12 +8,12 @@ import org.junit.jupiter.api.BeforeAll
 import org.junit.jupiter.api.Disabled
 import org.junit.jupiter.api.Test
 
-@Disabled
 class BenchmarkTest : BaseTest() {
 
     companion object {
         private const val DEFAULT_RUNS = 30
         private const val DEFAULT_CALLS_PER_RUN = 80000
+        private var printReadmeFormat = false
 
         @JvmStatic
         @BeforeAll
@@ -22,6 +22,8 @@ class BenchmarkTest : BaseTest() {
 
             // disable JsonPath cache for fair benchmarks
             CacheProvider.setCache(NOOPCache())
+
+            printReadmeFormat = System.getProperty("readmeFormat")?.toBoolean() ?: false
         }
     }
 
@@ -59,7 +61,11 @@ class BenchmarkTest : BaseTest() {
     private fun runBenchmarksAndPrintResults(path: String, callsPerRun: Int = DEFAULT_CALLS_PER_RUN, runs: Int = DEFAULT_RUNS) {
         val lite = benchmarkJsonPathLite(path, callsPerRun, runs)
         val other = benchmarkJsonPath(path, callsPerRun, runs)
-        println("$path   lite: ${lite}, jsonpath: ${other}")
+        if (printReadmeFormat) {
+            println("|  $path  |  ${lite} ms |  ${other} ms |")
+        } else {
+            println("$path   lite: ${lite}, jsonpath: ${other}")
+        }
     }
 
     @Test
@@ -74,20 +80,29 @@ class BenchmarkTest : BaseTest() {
 
     @Test
     fun benchmarkPathCompile() {
+        fun print(name: String, lite: Long, other: Long) {
+            if (printReadmeFormat) {
+                println("|  $name  |  ${lite} ms  |  ${other} ms  |")
+            } else {
+                println("$name  lite: ${lite}, jsonpath: ${other}")
+            }
+        }
+
         // short path length
         var lite = benchmark { JsonPath("$.hello['world']") }
         var other = benchmark { com.jayway.jsonpath.JsonPath.compile("$.hello['world']") }
-        println("short path compile time    lite: ${lite}, jsonpath: ${other}")
+        print("short path compile time", lite, other)
 
         // medium path length
         lite = benchmark { JsonPath("$[0].friends[1].other.a.b['c']") }
         other = benchmark { com.jayway.jsonpath.JsonPath.compile("$[0].friends[1].other.a.b['c']") }
-        println("medium path compile time   lite: ${lite}, jsonpath: ${other}")
+        print("medium path compile time", lite, other)
+
 
         // long path length
         lite = benchmark { JsonPath("$[0].friends[1].other.a.b['c'][5].niko[2].hello.world[6][9][0].id") }
         other = benchmark { com.jayway.jsonpath.JsonPath.compile("$[0].friends[1].other.a.b['c'][5].niko[2].hello.world[6][9][0].id") }
-        println("long path compile time     lite: ${lite}, jsonpath: ${other}")
+        print("long path compile time", lite, other)
     }
 
     @Test

src/test/kotlin/com/nfeld/jsonpathlite/JsonPathTest.kt

@@ -10,8 +10,6 @@ import org.junit.jupiter.api.assertThrows
 
 class JsonPathTest : BaseTest() {
 
-    //        val result = com.jayway.jsonpath.JsonPath.parse(LARGE_JSON).read<List<String>>("$..name")
-
     // JsonPath::parse related tests
     @Test
     fun shouldParseJsonObject() {

tests_codecov.gradle

@@ -3,36 +3,70 @@ dependencies {
     testImplementation 'com.jayway.jsonpath:json-path:2.4.0'
 }
 
+ext {
+    shouldBenchmark = false
+    readmeFormat = false // pass -DreadmeFormat to format benchmark results to update readme
+}
+
 compileTestKotlin {
     kotlinOptions.jvmTarget = "1.8"
 }
 
-test {
-    // Make this task never up to date, thus forcing rerun of all tests whenever task is run
-    outputs.upToDateWhen { false }
+task benchmark {
+    doLast {
+        shouldBenchmark = true
+        if (!System.getProperty("readmeFormat", "false").equals("false")) {
+            readmeFormat = true
+        }
+    }
+}
+benchmark.finalizedBy(test)
 
-    // enable junit 5
-    useJUnitPlatform()
+test {
+    doFirst {
+        if (shouldBenchmark) {
+            if (readmeFormat) {
+                jvmArgs '-DreadmeFormat=true'
+                readmeFormat = false
+            }
+            filter {
+                include("com/nfeld/jsonpathlite/BenchmarkTest.class")
+            }
+            testLogging {
+                showStandardStreams = true
+            }
+        } else {
+            filter {
+                exclude("com/nfeld/jsonpathlite/BenchmarkTest.class")
+            }
 
-    testLogging {
-        // show test results for following events
-        events 'PASSED', 'FAILED', 'SKIPPED'
+            testLogging {
+                // show test results for following events
+                events 'PASSED', 'FAILED', 'SKIPPED'
 
-        // show printlines
-        showStandardStreams = true
-    }
+                // show printlines
+                showStandardStreams = true
+            }
 
-    // show test summary at end
-    afterSuite { desc, result ->
-        if (!desc.parent) {
-            println "\nTest result: ${result.resultType}"
-            println "Test summary: ${result.testCount} tests, " +
-                    "${result.successfulTestCount} succeeded, " +
-                    "${result.failedTestCount} failed, " +
-                    "${result.skippedTestCount} skipped"
+            // show test summary at end
+            afterSuite { desc, result ->
+                if (!desc.parent) {
+                    println "\nTest result: ${result.resultType}"
+                    println "Test summary: ${result.testCount} tests, " +
+                            "${result.successfulTestCount} succeeded, " +
+                            "${result.failedTestCount} failed, " +
+                            "${result.skippedTestCount} skipped"
+                }
+            }
         }
     }
 
+    // Make this task never up to date, thus forcing rerun of all tests whenever task is run
+    outputs.upToDateWhen { false }
+
+    // enable junit 5
+    useJUnitPlatform()
+
     // code coverage
     jacoco {
         append = false