PT012 (micro test)

{
  "@context": "https://nxdlang.org/schema",
  "doc_id": "PT012",
  "title": "",
  "description": "NXD Compiler Testing Notes - Nim",
  "layer": "Passed Tests",
  "category": "Passed Tests",
  "keywords": [Transpilation, Compiler, Nim], 
  "doc_version": "1.0",
  "status": "active"
}

# PT012 (micro test)

### NXD Sample:

```nxd
MODULE TEST

FUNC MAIN()
    CONST LIMIT SET 10
    LET X SET 5

    PRINTLN(LIMIT)
    PRINTLN(X)
```

### Result:

COMPILER: PASS
SEMANTICS: PASS

### Expected Output:

```nim
# test

proc main() =
  let limit = 10
  var x = 5
  println(limit)
  println(x)
```

### Actual Output:

```nim
# test


proc main() =
  let limit = 10
  var x = 5
  println(limit)
  println(x)

```

### Notes:

Verified CONST statement parsing.
Verified CONST AST generation.
Verified CONST IR lowering.
Verified CONST JSON serialization.
Verified Rust deserialization of constant declarations.
Verified Nim backend correctly emits immutable values
Verified CONST and LET declarations can coexist within the same function scope.
Verified constant references survive the complete compiler pipeline.
Verified variable references survive the complete compiler pipeline.
Verified multiple function calls within a single function body.
Verified immutable and mutable storage semantics remain distinct after transpilation.

#### Technical Significance:

This test validates the first direct distinction between NXD immutable and mutable storage models through the complete compiler pipeline.

#### Observations:

The generated Nim closely mirrors the original NXD intent and remains highly readable without requiring prior Nim knowledge. This indicates that the current NXD → Nim mapping for storage declarations is predictable and transparent.

No defects were identified during this test.