has anyone added a cinterop (Obj-C framework) to a test executable?

# multiplatform

[Kris Wong]

has anyone added a cinterop (Obj-C framework) to a test executable?

[Sam Schilling]

I’ve imported the framework into an Xcode project that uses it to run its unit tests, not sure if that fits what you are describing

[Kris Wong]

that's kind of the opposite

[Kris Wong]

MPP output -> iOS unit tests instead of iOS framework -> MPP unit tests

[Kris Wong]

i managed to accomplish this by building both a dynamic and static framework, grabbing the headers from the dynamic framework, and throwing them in a directory with the static framework library

[Kris Wong]

kind of kludgy, but whatever

[dambakk]

We're looking at testing now as well. Can you post your build file to do what you described?

[Kris Wong]

i'll post the relevant section, but it's only one piece of the puzzle

[Kris Wong]

iosX64("ios") {
        compilations {
            "main" {
                dependencies {
                    implementation("suparnatural-kotlin-multiplatform:fs-iosx64:$suparnaturalVersion")
                }
            }
            "test" {
                cinterops.create("OHHTTPStubs") {
                    includeDirs("c_interop/OHHTTPStubs/Headers")
                }
            }
        }
        binaries.getTest(DEBUG).linkerOpts("-Lc_interop/OHHTTPStubs")
    }

[kpgalligan]

I’ve built a test framework in the past, but don’t currently have that wired up. If you pass “-tr” into the compiler it’ll generate a test runner. You can call that entry point from swift/objc, and it’ll run the tests.

[kpgalligan]

You have to find the actual code entry point generated. It’s something related to this: https://github.com/JetBrains/kotlin-native/blob/c3b2b47403b6705e25ed6744615a0c93a21a153c/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/EntryPoint.kt#L51

[kpgalligan]

Actually, looks like it’s this (or was). Had this in Droidcon app but dropped it: https://github.com/touchlab/DroidconKotlin/commit/8954a77734f70d7bbaec58e28fdba2275a37ae54#diff-79c332fa419905c2845cbbed041c9f91R11

[Kris Wong]

to be clear, I just wanted to link my existing text executable (the default one) to an obj-c framework

[Kris Wong]

it needs to be static