update build and gradle

app/build.gradle

@@ -1,20 +1,8 @@
-def getCommitCount() {
-    try {
-        def stdout = new ByteArrayOutputStream()
-        exec {
-            commandLine 'git', 'rev-list', '--count', 'HEAD'
-            standardOutput = stdout
-        }
-        return stdout.toString().trim().toInteger()
-    } catch (ignored) {
-        return 1
-    }
-}
-
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.plugin.serialization' version '2.4.20'
     id 'org.jetbrains.kotlin.plugin.compose' version '2.4.20'
+    id 'jacoco'
 }
 
 android {
@@ -24,12 +12,15 @@ android {
 
     defaultConfig {
         applicationId 'net.helcel.fidelity'
-        versionName "1.3b"
+        // CI derives both from git (see .github/workflows/build.yml); the fallbacks are for local builds.
+        versionName project.hasProperty('VERSION_NAME') ? project.property('VERSION_NAME') : "1.3c"
         versionCode project.hasProperty('VERSION_CODE') ? project.property('VERSION_CODE').toInteger() : 1
         buildConfigField("String", "APP_NAME", "\"Keepass Fidelity\"")
         manifestPlaceholders["APP_NAME"] = "Keepass Fidelity"
         minSdk = 28
         targetSdk = 37
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
     signingConfigs {
@@ -55,6 +46,7 @@ android {
             debuggable true
             initWith(buildTypes.release)
             signingConfig signingConfigs.debug
+            enableUnitTestCoverage true
         }
         release {
             minifyEnabled true
@@ -92,6 +84,25 @@ android {
     composeOptions {
         kotlinCompilerExtensionVersion = "2.2.20"
     }
+
+    testOptions {
+        unitTests {
+            includeAndroidResources = true
+            all {
+                maxParallelForks = 2
+                forkEvery = 50
+                maxHeapSize = "1024m"
+                // Robolectric loads classes through its own sandbox classloader, which leaves them
+                // without a code-source location. Without this JaCoCo skips them entirely and the
+                // report only sees the handful of plain JVM classes.
+                jacoco {
+                    includeNoLocationClasses = true
+                    excludes = ["jdk.internal.*"]
+                }
+            }
+        }
+    }
+
     kotlin {
         jvmToolchain(21)
     }
@@ -137,4 +148,36 @@ dependencies {
     implementation 'joda-time:joda-time:2.14.3'
     implementation 'org.joda:joda-convert:3.0.1'
 
+    testImplementation 'junit:junit:4.13.2'
+    testImplementation 'io.mockk:mockk:1.14.11'
+    testImplementation 'org.robolectric:robolectric:4.16.1'
+    testImplementation 'androidx.test:core:1.7.0'
+    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.11.0'
+    testImplementation 'androidx.compose.ui:ui-test-junit4'
+
+    androidTestImplementation platform('androidx.compose:compose-bom:2026.09.00')
+    androidTestImplementation 'androidx.test.ext:junit:1.3.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.7.0'
+    androidTestImplementation 'androidx.compose.ui:ui-test-junit4'
+    androidTestImplementation 'io.mockk:mockk-android:1.14.11'
+    debugImplementation 'androidx.compose.ui:ui-test-manifest'
+}
+
+tasks.register('jacocoTestReport', JacocoReport) {
+    dependsOn 'testDebugUnitTest'
+
+    reports {
+        xml.required = true
+        html.required = true
+    }
+
+    def fileFilter = ['**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*Test*.*']
+    def debugTree = fileTree(dir: "${project.layout.buildDirectory.asFile.get()}/intermediates/built_in_kotlinc/debug/compileDebugKotlin/classes", excludes: fileFilter)
+    def mainSrc = "${project.projectDir}/src/main/java"
+
+    sourceDirectories.from = files([mainSrc])
+    classDirectories.from = files([debugTree])
+    executionData.from = fileTree(dir: project.layout.buildDirectory.asFile.get(), includes: [
+            'jacoco/testDebugUnitTest.exec', 'outputs/unit_test_code_coverage/debugUnitTest/testDebugUnitTest.exec'
+    ])
 }