kover-conventions.gradle.kts

import kotlinx.kover.api.*
import kotlinx.kover.tasks.*

/*
 * Copyright 2016-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
 */

val notCovered = sourceless + internal + unpublished

val expectedCoverage = mutableMapOf(
    // These have lower coverage in general, it can be eventually fixed
    "kotlinx-coroutines-swing" to 70, // awaitFrame is not tested
    "kotlinx-coroutines-javafx" to 39, // JavaFx is not tested on TC because its graphic subsystem cannot be initialized in headless mode

    // Reactor has lower coverage in general due to various fatal error handling features
    "kotlinx-coroutines-reactor" to 75
)



subprojects {
    val projectName = name
    if (projectName in notCovered) return@subprojects
    apply(plugin = "kover")

    extensions.configure<KoverProjectConfig> {
        /*
         * Is explicitly enabled on TC in a separate build step.
         * Examples:
         * ./gradlew :p:check -- doesn't verify coverage
         * ./gradlew :p:check -Pkover.enabled=true -- verifies coverage
         * ./gradlew :p:koverReport -Pkover.enabled=true -- generates report
         */
        isDisabled.set(!(properties["kover.enabled"]?.toString()?.toBoolean() ?: false))

        verify {
            rule {
                bound {
                    /*
                     * 85 is our baseline that we aim to raise to 90+.
                     * Missing coverage is typically due to bugs in the agent
                     * (e.g. signatures deprecated with an error are counted),
                     * sometimes it's various diagnostic `toString` or `catch` for OOMs/VerificationErrors,
                     * but some places are definitely worth visiting.
                     */
                    minValue = expectedCoverage[projectName] ?: 85 // COVERED_LINES_PERCENTAGE
                }
            }
        }

        htmlReport {
            reportDir.set(file(rootProject.buildDir.toString() + "/kover/" + project.name + "/html"))
        }
    }
}