(wip) Glean metric unit tests.

app/build.gradle

@@ -291,6 +291,12 @@ android {
             ]
         }
 
+//        test {
+//            java.srcDirs = [
+//                    'src/test'
+//            ]
+//        }
+
         release {
             manifest.srcFile getUseDebugSigningOnRelease() ? "src/debug/AndroidManifest.xml"
                                                            : manifest.srcFile
@@ -414,6 +420,12 @@ android {
             ]
         }
     }
+
+//    testOptions {
+//        unitTests {
+//            includeAndroidResources = true
+//        }
+//    }
 }
 
 configurations {
@@ -495,9 +507,13 @@ dependencies {
     implementation deps.disklrucache.disklrucache
 
     // Testing
-    testImplementation deps.junit
     androidTestImplementation deps.atsl.runner
     androidTestImplementation deps.espresso.core
+    testImplementation deps.junit
+    testImplementation deps.atsl.core
+    testImplementation deps.robolectric
+    testImplementation deps.android_components.support_test
+    testImplementation deps.android_components.glean_unittests
 
     // Daydream
     googlevrImplementation deps.google_vr.sdk_base

app/src/test/java/org/mozilla/vrbrowser/GleanMetricsServiceTest.kt

@@ -0,0 +1,34 @@
+package org.mozilla.vrbrowser
+
+import androidx.test.core.app.ApplicationProvider
+import mozilla.components.service.glean.Glean.initialize
+import mozilla.components.service.glean.Glean.setUploadEnabled
+import mozilla.components.service.glean.config.Configuration
+import mozilla.components.service.glean.config.Configuration.Companion.DEFAULT_TELEMETRY_ENDPOINT
+import mozilla.components.service.glean.testing.GleanTestRule
+import org.junit.Assert.assertEquals
+import org.junit.Rule
+import org.junit.Test
+import org.mozilla.vrbrowser.GleanMetrics.*
+
+
+@get:Rule
+val gleanRule = GleanTestRule(ApplicationProvider.getApplicationContext())
+
+class GleanMetricsServiceTest {
+
+    @Test
+    fun testMetricsGathering() {
+        setUploadEnabled(true)
+        val config = Configuration(DEFAULT_TELEMETRY_ENDPOINT, BuildConfig.BUILD_TYPE)
+        initialize(ApplicationProvider.getApplicationContext(), config)
+
+        assert(!Url.visits.testHasValue())
+        Url.visits.add()
+        assert(Url.visits.testHasValue())
+        assertEquals(Url.visits.testGetValue(), 1)
+
+        assert(Url.queryType["voice_query"].testHasValue())
+        assertEquals(Url.queryType["voice_query"].testGetValue(), 0)
+    }
+}

versions.gradle

@@ -42,6 +42,7 @@ versions.support = "1.0.0"
 versions.recyclerview = "1.1.0"
 versions.constraint_layout = "2.0.0-alpha2"
 versions.junit = "4.12"
+versions.atsl_core = "1.2.0"
 versions.atsl_runner = "1.1.0-alpha4"
 versions.atsl_rules = "1.1.0-alpha4"
 versions.espresso = "3.1.0-alpha4"
@@ -50,6 +51,7 @@ versions.kotlin = "1.3.31"
 versions.kotlin_coroutines = "1.2.1"
 versions.snakeyaml = "1.24"
 versions.gson = "2.8.5"
+versions.robolectric = "4.2.1"
 def deps = [:]
 
 def gecko_view = [:]
@@ -61,6 +63,7 @@ deps.gecko_view = gecko_view
 def android_components = [:]
 android_components.telemetry = "org.mozilla.components:service-telemetry:$versions.android_components"
 android_components.glean = "org.mozilla.components:service-glean:$versions.android_components"
+android_components.glean_unittests = "org.mozilla.telemetry:glean-forUnitTests:$versions.android_components"
 android_components.browser_errorpages = "org.mozilla.components:browser-errorpages:$versions.android_components"
 android_components.browser_search = "org.mozilla.components:browser-search:$versions.android_components"
 android_components.browser_storage = "org.mozilla.components:browser-storage-sync:$versions.android_components"
@@ -71,6 +74,7 @@ android_components.concept_fetch = "org.mozilla.components:concept-fetch:$versio
 android_components.lib_fetch = "org.mozilla.components:lib-fetch-httpurlconnection:$versions.android_components"
 android_components.support_rustlog = "org.mozilla.components:support-rustlog:$versions.android_components"
 android_components.support_rusthttp = "org.mozilla.components:support-rusthttp:$versions.android_components"
+android_components.support_test = "org.mozilla.components:support-test:$versions.android_components"
 deps.android_components = android_components
 
 def app_services = [:]
@@ -123,6 +127,7 @@ espresso.intents = "androidx.test.espresso:espresso-intents:$versions.espresso"
 deps.espresso = espresso
 
 def atsl = [:]
+atsl.core = "androidx.test:core-ktx:$versions.atsl_core"
 atsl.runner = "androidx.test:runner:$versions.atsl_runner"
 atsl.rules = "androidx.test:rules:$versions.atsl_runner"
 deps.atsl = atsl
@@ -156,6 +161,8 @@ deps.snakeyaml = "org.yaml:snakeyaml:$versions.snakeyaml:android"
 
 deps.gson = "com.google.code.gson:gson:$versions.gson"
 
+deps.robolectric = "org.robolectric:robolectric:$versions.robolectric"
+
 ext.deps = deps
 
 def build_versions = [:]