Initial Dever 0.0.1

test/rust/native/task/channel.rs

@@ -0,0 +1,52 @@
+use super::{Directory, fixture};
+use dever::compiler::{build, project::Project};
+
+#[test]
+fn native_channels_transfer_values_and_share_close_state() {
+    let directory = Directory::new();
+    let project = Project::load(&fixture().with_file_name("channel.dever")).unwrap();
+    let program = project.check().unwrap();
+    for (entry, expected) in [
+        ("verify", "true\n"),
+        ("creation", "Channel\n"),
+        ("nullable", "None\n"),
+    ] {
+        let binary =
+            build::build(&program, &project.sources, entry, &directory.0.join(entry)).unwrap();
+        let result = std::process::Command::new(binary).output().unwrap();
+        assert!(
+            result.status.success(),
+            "{}",
+            String::from_utf8_lossy(&result.stderr)
+        );
+        assert_eq!(result.stdout, expected.as_bytes());
+    }
+}
+
+#[test]
+fn channel_faults_keep_original_source_locations() {
+    let directory = Directory::new();
+    let project = Project::load(&fixture().with_file_name("channel.dever")).unwrap();
+    let program = project.check().unwrap();
+    for (entry, needle, message) in [
+        (
+            "invalid",
+            "channel(Int, 0)",
+            "channel capacity must be within 1..65536",
+        ),
+        ("closed", "send(values, 42)", "channel is closed"),
+    ] {
+        let binary =
+            build::build(&program, &project.sources, entry, &directory.0.join(entry)).unwrap();
+        let result = std::process::Command::new(binary).output().unwrap();
+        assert!(!result.status.success());
+        let source = &project.sources[0];
+        let (line, column) = source.position(source.text.find(needle).unwrap());
+        let error = String::from_utf8(result.stderr).unwrap();
+        assert!(error.contains(message), "{error}");
+        assert!(
+            error.contains(&format!("channel.dever:{line}:{column}:")),
+            "{error}"
+        );
+    }
+}