Java 如何在Android中使用SQLite获取机器人分子单元测试的上下文
我想使用RoboleElectric在Android中为SQLiteOpenHelper做一些单元测试。但是,我无法创建数据库,因为我无法获取上下文。我尝试了这里提到的4个选项,但都不起作用。在这里,您可以看到testclass的代码,在“setUp”方法中,您可以看到我尝试过的不同选项,以及之后的相应错误消息//Java 如何在Android中使用SQLite获取机器人分子单元测试的上下文,java,android,sqlite,junit4,robolectric,Java,Android,Sqlite,Junit4,Robolectric,我想使用RoboleElectric在Android中为SQLiteOpenHelper做一些单元测试。但是,我无法创建数据库,因为我无法获取上下文。我尝试了这里提到的4个选项,但都不起作用。在这里,您可以看到testclass的代码,在“setUp”方法中,您可以看到我尝试过的不同选项,以及之后的相应错误消息// package com.example.td.barapp; import android.content.Context; import android.database.Cur
package com.example.td.barapp;
import android.content.Context;
import android.database.Cursor;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.RuntimeEnvironment;
@RunWith(RobolectricTestRunner.class)
public class DataBaseHelperTest {
private DataBaseHelper helperDB;
@Before
public void setUp() throws Exception {
// Context context = ShadowApplication.getInstance().applicationContext; //Error: Cannot resolve symbol 'applicationContext'
//Context context = Robolectric.application; // Error: Cannot resolve symbol application
//Context context = ApplicationProvider.getApplicationContext(); // Error: Cannot resolve symbol 'ApplicationProvider'
//Context context = RuntimeEnvironment.systemContext; // Error: Cannot resolve symbol 'systemContext'
//Context context = getClass().getClassLoader(); // Error: Required type: Context Provided: ClassLoader
Context context = InstrumentationRegistry.getInstrumentation().getContext(); // Error: Cannot resolve symbol 'InstrumentationRegistry'
helperDB = new DataBaseHelper(context);
}
@After
public void tearDown() {
helperDB.close();
}
@Test
public void insertDataDB_TableRatings() {
boolean insertRating = helperDB.insertDataDB_TableRatings("Orange Juice", "Any", "Any", 1,
0,0,1,0,0 );
Assert.assertTrue(insertRating);
}
@Test
public void getDataDB_TableRating() {
String drinkName = "Orange Juice";
String drinkStrength = "Any";
String drinkSize = "Any";
boolean insertRating = helperDB.insertDataDB_TableRatings(drinkName, drinkStrength, drinkSize, 1,
0,0,1,0,0 );
Cursor res = helperDB.getDataDB_TableRating(drinkName, drinkStrength, drinkSize);
Assert.assertFalse(res.getCount()==0);
res.moveToFirst();
Assert.assertEquals (res.getString(0), drinkName);
Assert.assertEquals (res.getString(6), "1");
drinkSize = "Large";
boolean insertRating2 = helperDB.insertDataDB_TableRatings(drinkName, drinkStrength, drinkSize, 1,
0,0,0,1,0 );
res = helperDB.getDataDB_TableRating(drinkName, drinkStrength, drinkSize);
Assert.assertFalse(res.getCount()==0);
res.moveToFirst();
Assert.assertEquals (res.getString(2), drinkName);
Assert.assertEquals (res.getString(7), "1");
}
@Test
public void updateDataDB_TableRatings() {
String drinkName = "Orange Juice";
String drinkStrength = "Any";
String drinkSize = "Any";
boolean insertRating = helperDB.insertDataDB_TableRatings(drinkName, drinkStrength, drinkSize, 1, 0,0,1,0,0 );
boolean valueUpdated = helperDB.updateDataDB_TableRatings(drinkName, drinkStrength , drinkSize, 2, 0, 0, 0, 1, 0);
Cursor res = helperDB.getDataDB_TableRating(drinkName, drinkStrength, drinkSize);
Assert.assertFalse(res.getCount()==0);
res.moveToFirst();
Assert.assertEquals (res.getString(8), "1");
}
@Test
public void deleteDataDB_TableRatings() {
String drinkName = "Orange Juice";
String drinkStrength = "Any";
String drinkSize = "Large";
boolean insertRating = helperDB.insertDataDB_TableRatings(drinkName, drinkStrength, drinkSize, 1, 0,0,1,0,0 );
helperDB.deleteDataDB_TableRatings (drinkName, drinkStrength, drinkSize);
}
}
我还在build.gradle文件中添加了以下行:
testImplementation 'junit:junit:4.13'
testImplementation 'org.robolectric:robolectric:3.0'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
你介意告诉我我犯了什么错误吗?我很感激你的每一句话
更新:由于我似乎缺少一些依赖项,我上传了build.gradle文件和这些依赖项。你介意告诉我错误是什么吗?为什么我无法了解RobElectric的相关情况
apply plugin: 'com.android.application'
apply plugin: "androidx.navigation.safeargs"
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.td.barapp"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
viewBinding {
enabled = true
}
dataBinding {
enabled=true
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
def nav_version = "2.3.0"
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'com.google.android.material:material:1.2.0-alpha06'
testImplementation 'junit:junit:4.13'
testImplementation 'org.robolectric:robolectric:3.0'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
androidTestImplementation 'android.arch.core:core-testing:1.2.1'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation "androidx.recyclerview:recyclerview:1.1.0"
implementation 'androidx.cardview:cardview:1.0.0'
implementation "androidx.navigation:navigation-fragment:$nav_version"
implementation "androidx.navigation:navigation-ui:$nav_version"
}
我很确定你不能用robolectric测试SQLite。例如,我的房间测试仅在AndroidTest/Instrumented中运行。如果您愿意改为使用Room而不是直接使用SQLite,那么它的测试是有文档记录的 如果你想了解更多关于房间的信息,这里有
如果您想了解更多关于其测试的信息,可以查看。感谢Henrique的回答。基本上,我发现了一些网页,声称可以使用robolectric(如或)测试SQLite。但无论如何,我有一种想法,即使用单元测试为我的应用程序测试数据库根本不值得。我可以通过查看数据库的更改来测试数据库。按照我的观点,这样我就不必实现所有那些不值得花时间的测试,我也不想使用Room而不是SQLiteOpenHelper,因为我只是设法了解SQLiteOpenHelper,不想一直学习新的东西。嘿,我完全理解,一直学习新事物可能非常耗时。但我真诚地建议你带上你的托多利斯特去学习。。它真的很容易,干净,容易测试。如果你在使用匕首,我有这个回购协议,可能会帮助你。顺便问一下,你能用崩溃/错误日志更新你的问题吗?