Jacoco shows coverage 0.0 when running the gradle task but shows correct when run from Intellij - jacoco

Question

I am using Jacoco plugin to calculate the code coverage for spring boot application. The Jacoco configuration from the build.gradle looks like this:
jacocoTestReport {
reports {
xml.enabled false
csv.enabled false
html.destination file("${buildDir}/jacocoHtml")
}
afterEvaluate {
classDirectories = files(classDirectories.files.collect {
fileTree(dir: it,
exclude: ['**/models/**',
'**/config/**',
'**/constants/**',
'**/Application.class'])
})
}
}
and
jacocoTestCoverageVerification {
violationRules {
rule {
element = 'PACKAGE'
excludes = ['some packages']
limit {
counter = 'BRANCH'
minimum = 0.7
}
}
}
}
When I run the coverage from the IntelliJ then it shows the correct result but when I run it with gradlew clean buils, it fails with coverage 0.0.
I have written an example class and here are the jacoco report snapshots-
report:
class:
And the test I wrote for the SomeClass is
public class SomeClassTest {
private SomeClass someClass;
#Before
public void setUp() throws Exception {
someClass = new SomeClass(12, 23);
}
#Test
public void shouldSumTwoValues() {
assertThat(someClass.sum()).isEqualTo(35);
}
}
Can someone please help me with this?

Answer 1

Given src/main/java/SomeClass.java
class SomeClass {
private Integer value1;
private Integer value2;
SomeClass(Integer value1, Integer value2) {
this.value1 = value1;
this.value2 = value2;
}
Integer sum() {
return value1 + value2;
}
}
src/test/java/SomeClassTest.java
import org.junit.*;
import static org.junit.Assert.*;
public class SomeClassTest {
private SomeClass someClass;
#Before
public void setUp() throws Exception {
someClass = new SomeClass(12, 23);
}
#Test
public void shouldSumTwoValues() {
assertEquals(35, (int) someClass.sum());
}
}
and build.gradle
apply plugin: "java"
apply plugin: "jacoco"
dependencies {
testCompile "junit:junit:4.12"
}
repositories {
mavenCentral()
}
execution of gradle test jacocoTestReport produces following report in build/reports/jacoco/test/html/index.html
Addition to build.gradle of
jacocoTestReport {
reports {
xml.enabled false
csv.enabled false
html.destination file("${buildDir}/jacocoHtml")
}
afterEvaluate {
classDirectories = files(classDirectories.files.collect {
fileTree(dir: it,
exclude: ['**/models/**',
'**/config/**',
'**/constants/**',
'**/Application.class'])
})
}
}
jacocoTestCoverageVerification {
violationRules {
rule {
element = 'PACKAGE'
excludes = ['some packages']
limit {
counter = 'BRANCH'
minimum = 0.7
}
}
}
}
doesn't change result/report, except of change of directory with report on build/jacocoHtml.

Answer 2

In my case I discovered that it is due to the fact that I set minimum = 1. When I change it to 0.9 all of the sudden it works