Android Local TestでAndroid固有のクラスをモック化する

java.lang.RuntimeException: Method d in android.util.Log not mocked. See http://g.co/androidstudio/not-mocked for details.

package android.util;

public class Log {
    public static int v(String tag, String msg) {
        return 0;
    }

    public static int v(String tag, String msg, Throwable tr) {
        return 0;
    }

    public static int d(String tag, String msg) {
        return 0;
    }

    public static int d(String tag, String msg, Throwable tr) {
        return 0;
    }

    public static int i(String tag, String msg) {
        return 0;
    }

    public static int i(String tag, String msg, Throwable tr) {
        return 0;
    }

    public static int w(String tag, String msg) {
        return 0;
    }

    public static int w(String tag, String msg, Throwable tr) {
        return 0;
    }

    public static int w(String tag, Throwable tr) {
        return 0;
    }

    public static int e(String tag, String msg) {
        return 0;
    }

    public static int e(String tag, String msg, Throwable tr) {
        return 0;
    }

}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.0"

    defaultConfig {
        applicationId "com.classmethod.logtest"
        minSdkVersion 15
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.0.0'
}

public class Calculation {
    public int sum(int x, int y) {
        Log.d("sum", x + "+" + y);
        return x + y;
    }
}

public class CalculationTest {

    @Test
    public void 加算のテストをする() {
        Calculation calculation = new Calculation();
        Assert.assertThat(calculation.sum(7, 7), Is.is(14));
    }
}