What broke my getResourceAsStream?

Question

I'm taking over a project and have to assume that the tests worked at some point the way I find them (boiled down to what should not be null):

@Test
public void testCoding() {
   assertNotNull(getClass().getResourceAsStream("/myfile.json"));
   //assertNotNull(MyTest.class.getResourceAsStream("/myfile.json"));
   //assertNotNull(MyTest.class.getClassLoader().getResourceAsStream("myfile.json"));
   //...
}

with myfile.json in src/test/resources/ and the test in src/test/java/some/package/.

I tried putting myfile.json into the same folder as the test, in the src/java folder, I tried with and without leading / and with /resources and all the tips I found on SO.

The gradle file is:

    apply plugin: 'java'

    repositories {
        mavenCentral()
    }

    dependencies {
        testCompile "junit:junit:$junitVersion"
    }

What am I missing?

Update:

I realized that the source code is in the open source part of our project and that it does fail in AS, only.

Here is the line that fails if I right-click the lt-api/src/test/java/ folder and select "Run All Tests". The Gradle console prints out this line:

    Executing tasks: [:lt-api:compileJava, :lt-api:testClasses, :mbwlib:compileJava, :mbwlib:testClasses, :bitlib:compileJava, :bitlib:testClasses]

Running ./gradlew clean :lt-api:compileJava :lt-api:testClasses :mbwlib:compileJava :mbwlib:testClasses :bitlib:compileJava :bitlib:testClasses

does not trigger the error but neither does it run tests. (How can I know what exactly AS is doing there? I thought AS was doing gradle all the way now?)

Running

    ./gradlew clean :lt-api:test

I get the tests to run (adding a typo results in failing tests) but it doesn't trigger the issue I originally had and that I'd like to understand.

Where should the file be?

$ sudo updatedb
$ locate test-classes
$ locate ungargasse.json
/path/to/project/lt-api/build/resources/test/ungargasse.json
/path/to/project/lt-api/src/test/resources/ungargasse.json

The acid test is where is it when you execute it? Does it get copied into the head of the class hierarchy? It seems to me the code should say `"/resources/myfile.json"`. — user207421, Jun 09 '17 at 03:53
refer it it may help https://stackoverflow.com/questions/676250/different-ways-of-loading-a-file-as-an-inputstream — Zia, Jun 09 '17 at 04:26
It depends on how the project is build: is the directory src/test/resources/ in the classpath? or is its content copied in the classpath? — Maurice Perry, Jun 09 '17 at 05:45
Updated the question. Sorry for slow response with kind of a change of issue towards AndroidStudio vs. Gradlew. — Giszmo, Jun 12 '17 at 21:56

score 2 · Answer 1 · edited Jun 09 '17 at 05:31

Be Sure that myfile.json is in the test-classe after you complied the codes.

(By default,the files in src/test/resources/ will automatically move into test-classes after compling)

You can use getResourceAsStream without leading "/" in two cases:

Test.java is in src/test/java/some/package and myfile.json is in /test/resource
```
src/test/java/some/package/Test.java
src/test/resource/myfile.json
```

Test.java and myfile.json are in the same package

src/test/java/some/package/Test.java
src/test/java/some/package/myfile.json

For example

@org.junit.Test
    public void testCoding() {
        InputStream resourceAsStream = getClass().getResourceAsStream("myfile.json");
        System.out.println(resourceAsStream);

    }

Thank you for your answer. I believe there is a typo. /test/resources/, not resource/. I updated my question. Essentially I get the issue in Android Studio but not on the console using gradlew. — Giszmo, Jun 12 '17 at 21:15

What broke my getResourceAsStream?

1 Answers1