Need help learning to write tests for this Android app (Kotlin, MVVM, Room, Dagger2)
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
https://github.com/Spheniscine/dimsum-leadmanagement
I am currently a beginner to Android development.
This is an Android app I am currently working on, notes on its current working state is in the description. I am currently trying to learn how to write more robust code using MVVM (Model-View-View Model) for a testable architecture, and was supposed to learn TDD (test-driven development) patterns, but I seem to have hit a snag as to writing the actual tests.
There are a number of instrumented tests already here testing the simplest navigation stuff, but I am having trouble figuring out the best way to write tests for things like whether a salesperson shows up on the list or whether adding a salesperson works, without referencing or affecting the actual database on the phone. I'm also struggling to write unit tests for the backend (SalespersonMngViewModel and DimsumRepository)
From what I can glean, I need to use something called Dagger to inject a mock database or repository as needed... as evidenced by the "di" folder, I have managed to use it to make the repository injectable, however I am having trouble figuring out how to actually use it for testing. Additionally, I am having trouble figuring out how to extend that pattern to inject the ViewModel. From the tutorials and info I looked around for, it seems to require something called a ViewModelFactory, which again, I am having trouble understanding how to implement.
The problem is that the tutorials I found either talked about a whole bunch of other dependencies (e.g. Retrofit, RxJava, Glide) that I haven't had time to learn about yet, or were missing key features or use cases that I needed (e.g. there was an MVVM tutorial I followed that didn't have testing, and then there was a testing tutorial that used MVVM, but with neither a Room database nor dependency injection)
android database unit-testing mvvm kotlin asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
add a comment |
https://github.com/Spheniscine/dimsum-leadmanagement
I am currently a beginner to Android development.
This is an Android app I am currently working on, notes on its current working state is in the description. I am currently trying to learn how to write more robust code using MVVM (Model-View-View Model) for a testable architecture, and was supposed to learn TDD (test-driven development) patterns, but I seem to have hit a snag as to writing the actual tests.
There are a number of instrumented tests already here testing the simplest navigation stuff, but I am having trouble figuring out the best way to write tests for things like whether a salesperson shows up on the list or whether adding a salesperson works, without referencing or affecting the actual database on the phone. I'm also struggling to write unit tests for the backend (SalespersonMngViewModel and DimsumRepository)
From what I can glean, I need to use something called Dagger to inject a mock database or repository as needed... as evidenced by the "di" folder, I have managed to use it to make the repository injectable, however I am having trouble figuring out how to actually use it for testing. Additionally, I am having trouble figuring out how to extend that pattern to inject the ViewModel. From the tutorials and info I looked around for, it seems to require something called a ViewModelFactory, which again, I am having trouble understanding how to implement.
The problem is that the tutorials I found either talked about a whole bunch of other dependencies (e.g. Retrofit, RxJava, Glide) that I haven't had time to learn about yet, or were missing key features or use cases that I needed (e.g. there was an MVVM tutorial I followed that didn't have testing, and then there was a testing tutorial that used MVVM, but with neither a Room database nor dependency injection)
android database unit-testing mvvm kotlin asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
add a comment |
https://github.com/Spheniscine/dimsum-leadmanagement
I am currently a beginner to Android development.
This is an Android app I am currently working on, notes on its current working state is in the description. I am currently trying to learn how to write more robust code using MVVM (Model-View-View Model) for a testable architecture, and was supposed to learn TDD (test-driven development) patterns, but I seem to have hit a snag as to writing the actual tests.
There are a number of instrumented tests already here testing the simplest navigation stuff, but I am having trouble figuring out the best way to write tests for things like whether a salesperson shows up on the list or whether adding a salesperson works, without referencing or affecting the actual database on the phone. I'm also struggling to write unit tests for the backend (SalespersonMngViewModel and DimsumRepository)
From what I can glean, I need to use something called Dagger to inject a mock database or repository as needed... as evidenced by the "di" folder, I have managed to use it to make the repository injectable, however I am having trouble figuring out how to actually use it for testing. Additionally, I am having trouble figuring out how to extend that pattern to inject the ViewModel. From the tutorials and info I looked around for, it seems to require something called a ViewModelFactory, which again, I am having trouble understanding how to implement.
The problem is that the tutorials I found either talked about a whole bunch of other dependencies (e.g. Retrofit, RxJava, Glide) that I haven't had time to learn about yet, or were missing key features or use cases that I needed (e.g. there was an MVVM tutorial I followed that didn't have testing, and then there was a testing tutorial that used MVVM, but with neither a Room database nor dependency injection)
android database unit-testing mvvm kotlin asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
https://github.com/Spheniscine/dimsum-leadmanagement
I am currently a beginner to Android development.
This is an Android app I am currently working on, notes on its current working state is in the description. I am currently trying to learn how to write more robust code using MVVM (Model-View-View Model) for a testable architecture, and was supposed to learn TDD (test-driven development) patterns, but I seem to have hit a snag as to writing the actual tests.
There are a number of instrumented tests already here testing the simplest navigation stuff, but I am having trouble figuring out the best way to write tests for things like whether a salesperson shows up on the list or whether adding a salesperson works, without referencing or affecting the actual database on the phone. I'm also struggling to write unit tests for the backend (SalespersonMngViewModel and DimsumRepository)
From what I can glean, I need to use something called Dagger to inject a mock database or repository as needed... as evidenced by the "di" folder, I have managed to use it to make the repository injectable, however I am having trouble figuring out how to actually use it for testing. Additionally, I am having trouble figuring out how to extend that pattern to inject the ViewModel. From the tutorials and info I looked around for, it seems to require something called a ViewModelFactory, which again, I am having trouble understanding how to implement.
The problem is that the tutorials I found either talked about a whole bunch of other dependencies (e.g. Retrofit, RxJava, Glide) that I haven't had time to learn about yet, or were missing key features or use cases that I needed (e.g. there was an MVVM tutorial I followed that didn't have testing, and then there was a testing tutorial that used MVVM, but with neither a Room database nor dependency injection)
android database unit-testing mvvm kotlin android database unit-testing mvvm kotlin asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
asked Nov 16 '18 at 13:58
SpheniscineSpheniscine
215
215
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53339291%2fneed-help-learning-to-write-tests-for-this-android-app-kotlin-mvvm-room-dagg%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53339291%2fneed-help-learning-to-write-tests-for-this-android-app-kotlin-mvvm-room-dagg%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
