Initial Dever 0.0.1

test/rust/native/standard.rs

@@ -0,0 +1,73 @@
+use super::{Directory, fixture};
+use dever::compiler::{build, project::Project};
+
+#[test]
+fn native_text_numeric_and_math_interfaces_execute_without_a_runtime() {
+    let directory = Directory::new();
+    let project = Project::load(&fixture().with_file_name("standard.dever")).unwrap();
+    let program = project.check().unwrap();
+    for entry in ["textVerify", "numericVerify"] {
+        let index = program
+            .functions
+            .iter()
+            .position(|function| function.signature.name == entry)
+            .unwrap();
+        assert!(build::runtime_features(&program, &program.reachable([index])).is_empty());
+        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(),
+            "{entry}: {}",
+            String::from_utf8_lossy(&result.stderr)
+        );
+        assert_eq!(result.stdout, b"true\n", "{entry}");
+    }
+}
+
+#[test]
+fn decimal_round_fault_keeps_the_original_library_position() {
+    let directory = Directory::new();
+    let project = Project::load(&fixture().with_file_name("standard.dever")).unwrap();
+    let program = project.check().unwrap();
+    let binary = build::build(
+        &program,
+        &project.sources,
+        "invalidRound",
+        &directory.0.join("invalid"),
+    )
+    .unwrap();
+    let result = std::process::Command::new(binary).output().unwrap();
+    assert!(!result.status.success());
+    let error = String::from_utf8(result.stderr).unwrap();
+    assert!(error.contains("Decimal rounding fault"), "{error}");
+    let source = project
+        .sources
+        .iter()
+        .find(|source| source.path.ends_with("lib/decimal.dever"))
+        .unwrap();
+    let (line, column) = source.position(
+        source
+            .text
+            .find("dever.system.decimalRound(value, places)")
+            .unwrap(),
+    );
+    assert!(
+        error.contains(&format!("{}:{line}:{column}:", source.path.display())),
+        "{error}"
+    );
+}
+
+#[test]
+fn user_packages_cannot_claim_standard_namespaces() {
+    for name in ["text", "int", "decimal", "float", "math", "uuid"] {
+        let directory = Directory::new();
+        std::fs::write(directory.0.join(format!("{name}.dever")), "unused").unwrap();
+        let result = Project::load(&directory.0);
+        let error = match result {
+            Ok(_) => panic!("reserved package accepted"),
+            Err(error) => error,
+        };
+        assert!(error.contains("reserved standard namespace"), "{error}");
+    }
+}