Is there a way in a detekt spec (for a rule I'm working on) to use `${...}` in the compiled test cod...

# detekt

[bbaldino]

Is there a way in a detekt spec (for a rule I'm working on) to use ${...} in the compiled test code? If I do:

val code = """
    fun foo() {
        println("The list is ${listOf(1, 2, 3)}"
    }
""".trimIndent()
assertThat(subject.compileAndLintWithContext(wrapper.env, code)).hasSize(0)

then the compiled ktFile has the list expanded, but if I do:

val code = """
    fun foo() {
        println("The list is \$\{listOf(1, 2, 3)\}"
    }
""".trimIndent()
assertThat(subject.compileAndLintWithContext(wrapper.env, code)).hasSize(0)

then the compiled ktFile maintains the escape characters, so the code isn't actually doing the expansion

[bbaldino]

What I want is for the code to be analyzed to actually contain println("The list is ${listOf(1, 2, 3)}"

[schalkms]

Nice to hear that you are working on a detekt rule. 🙂
The mentioned problem actually relates to the Kotlin multi-line string behavior. This has nothing to do with the compileAndLint functionality.

[bbaldino]

Yeah, I was wondering if perhaps a case like this had been hit before and compileAndLint (or some other helper function) existed to work around it in detekt

[bbaldino]

I did look through the other specs, but didn't see any cases of something like this...but was hoping I'd missed something.

[schalkms]

Nope there isn't, sorry.
Please submit a PR, if you develop a helper function for that case.

[bbaldino]

Ok, thanks for clarifying

[Artur Bosch]

We might need test files containing the code to test interpolation code.

[bbaldino]

Is there a way to do that currently? i.e. if I put a .kt file in resources or something, is there a form of compileAndLintWithContext that takes in a file?

[Czar]

have you tried ${'$'} instead of an escape?

val code = """
    fun foo() {
        println("The list is ${'$'}{listOf(1, 2, 3)}"
    }
	""".trimIndent()

[bbaldino]

I haven't, but looks like that did it! Thanks @Czar!

[schalkms]

Thanks for sharing this!

[Czar]

You're welcome, funny thing is someone was just asking how to escape $ without resorting to ${'$'} several messages above 😄