todo: one sorted list of open work; library suggestions without naming libraries

TODO.md ticks the items verified done (namespaces, actor and icon libraries
and their coverage, the genome embed, the bootstrap ownership limits, the
docs and fixtures sweep) and lists everything still open, including the
newly requested language features, sorted easiest first.

the compiler no longer names actor: file libraries for suggestions come from
src/lib/modules.txt, and lib.name before its include reports the missing
include. icon gains fixtures for reading globals while stepping and for
begin_function on a non-function, and the suite checks that nothing the
compiler reads by default mentions actors. bf.zc, the web sample and std's
capture example use qualified runtime names; LEARN.md uses build/bin paths.

4 files changed, 32 insertions, 0 deletions

diff --git a/tests/icon/accept/step_globals.expected b/tests/icon/accept/step_globals.expected
new file mode 100644
index 0000000..8c5e263
--- /dev/null
+++ b/tests/icon/accept/step_globals.expected
@@ -0,0 +1 @@
+5 10 11 11 11 0 2
diff --git a/tests/icon/accept/step_globals.zc b/tests/icon/accept/step_globals.zc
new file mode 100644
index 0000000..c584772
--- /dev/null
+++ b/tests/icon/accept/step_globals.zc
@@ -0,0 +1,19 @@
+include rt;
+include run;
+include icon;
+int total = 1;
+fn main() {
+	// step a fragment that writes an isolated global and a bound one, reading both after each step
+	let q = run.tokens("int n = 5; scale = scale * n; total = total + scale; return total;");
+	let frame = icon.begin(q);
+	icon.set_global(frame, "scale", 2);
+	icon.bind_global(frame, "total");
+	icon.step(frame); rt.put_n(icon.local(frame, "n")); rt.put_c(' ');
+	icon.step(frame); rt.put_n(icon.global(frame, "scale")); rt.put_c(' ');
+	icon.step(frame); rt.put_n(icon.global(frame, "total")); rt.put_c(' '); rt.put_n(total); rt.put_c(' ');
+	icon.step(frame); rt.put_n(icon.result(frame)); rt.put_c(' ');
+	// a name the frame never bound reads as 0 with error status 2
+	rt.put_n(icon.global(frame, "missing")); rt.put_c(' '); rt.put_n(icon.error()); rt.put_c(10);
+	icon.close(d*frame);
+	return 0;
+}
diff --git a/tests/icon/reject/begin_unknown_function.expected b/tests/icon/reject/begin_unknown_function.expected
new file mode 100644
index 0000000..1f338fc
--- /dev/null
+++ b/tests/icon/reject/begin_unknown_function.expected
@@ -0,0 +1 @@
+1 4 0
diff --git a/tests/icon/reject/begin_unknown_function.zc b/tests/icon/reject/begin_unknown_function.zc
new file mode 100644
index 0000000..6a8e5b3
--- /dev/null
+++ b/tests/icon/reject/begin_unknown_function.zc
@@ -0,0 +1,11 @@
+include rt;
+include run;
+include icon;
+fn main() {
+	// an address that is no function has no tokens to step: no frame, error status 4
+	let frame = icon.begin_function(12345);
+	rt.put_n(frame == 0); rt.put_c(' '); rt.put_n(icon.error()); rt.put_c(' ');
+	// stepping or reading a missing frame does nothing
+	rt.put_n(icon.step(0)); rt.put_c(10);
+	return 0;
+}