ludic/packages/ludic.nativeecho/tests/echo_test.ludic
Orkuncakilkaya 5d3a799e33 feat(pkg): phase 15 - a package can carry a native library
native "<target>" "<path>" in a package's package.ludic; the compiler records the libraries of
every package a program imports and writes them into the IR (; ludic-native:), so ludicc -o,
ludic build, ludic test and ludic bundle all link one list. macOS: an rpath to the package and to
Contents/Frameworks, where ludic bundle copies and signs each library and drops the build
machine's rpath. Windows: the import library, the .dll copied beside the exe (--natives-out for
the bundle). tools/native/lib.sh builds from a pinned, checksummed source with clang on both
machines; ludic.nativeecho is the worked example; the shim rules are in packages/README.md.
Linked at build time rather than dlopen (docs/PACKAGES.md says why). Reseeded.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-26 23:35:45 +03:00

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# echo_test.ludic - the native library is linked and called: a sum over a slice, a scan whose
# records come back as facts in order, a 64-bit value, and a drain that leaves nothing behind
import "ludic.nativeecho"
import "ludic.base"
program EchoTest {
numbers float
test "a sum is worked out in C over the package's own slice" (echo_st: mut EchoState) {
echo_put(echo_st, 1.5)
echo_put(echo_st, 2.0)
echo_put(echo_st, 0.25)
expect(echo_sum(echo_st) == 3.75)
}
test "what C would have called back arrives as facts, in order" (echo_st: mut EchoState) {
echo_put(echo_st, 1.0)
echo_put(echo_st, 9.0)
echo_put(echo_st, 2.0)
echo_put(echo_st, 7.5)
expect(echo_scan(echo_st, 5.0) == 2)
let fs = q_drain(echo_facts(echo_st))
expect(len(fs) == 2)
expect(fs[0].index == 1)
expect(fs[0].value == 9.0)
expect(fs[1].index == 3)
expect(fs[1].value == 7.5)
expect(echo_scan(echo_st, 100.0) == 0)
expect(q_len(echo_facts(echo_st)) == 0)
expect(echo_lost() == 0)
}
test "a long crosses whole" {
expect(echo_twice(long(3000000000)) == long(6000000000))
}
test "the slice holds what it was made for and no more" (echo_st: mut EchoState) {
for i in 0 .. ECHO_CAP { expect(echo_put(echo_st, 1.0)) }
expect(not echo_put(echo_st, 1.0))
expect(echo_sum(echo_st) == float(ECHO_CAP))
}
}