From ac745dd4a6c134e3961042a904304c020aaf53e2 Mon Sep 17 00:00:00 2001
From: KeshavAnandCode <keshavanand.dev@gmail.com>
Date: Fri, 15 May 2026 18:53:00 -0500
Subject: [PATCH] v1 done

---
 README.md                |   1 +
 pyproject.toml           |   1 -
 tests/test_transpiler.py | 104 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 105 insertions(+), 1 deletion(-)
 create mode 100644 README.md

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..ddf7cda
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+# foreignthon
diff --git a/pyproject.toml b/pyproject.toml
index 8705b67..7a74077 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,6 @@ build-backend = "hatchling.build"
 name = "foreignthon"
 version = "0.1.0"
 description = "Write Python in any language. Transpiles foreign-language .xx.py files to standard Python."
-readme = "README.md"
 license = { text = "MIT" }
 requires-python = ">=3.9"
 authors = [
diff --git a/tests/test_transpiler.py b/tests/test_transpiler.py
index e69de29..b67a4b1 100644
--- a/tests/test_transpiler.py
+++ b/tests/test_transpiler.py
@@ -0,0 +1,104 @@
+from __future__ import annotations
+
+import ast
+from pathlib import Path
+
+import pytest
+
+from foreignthon.transpiler import transpile, _detect_lang, _check_shebang
+
+# ---------------------------------------------------------------------------
+# All tests use the real foreignthon-es pack — no mocks
+# ---------------------------------------------------------------------------
+
+def es(source: str) -> str:
+    return transpile(source, "es")
+
+
+# ---------------------------------------------------------------------------
+# Keywords
+# ---------------------------------------------------------------------------
+
+def test_if_else():
+    out = es("si x > 0:\n    imprimir(x)\nsino:\n    pasar")
+    assert "if" in out and "else" in out and "pass" in out
+    assert "si" not in out and "sino" not in out
+
+def test_for_loop():
+    out = es("para i en rango(10):\n    imprimir(i)")
+    assert "for" in out and "in" in out and "range" in out
+
+def test_function_def():
+    out = es("definir saludar(nombre):\n    retornar nombre")
+    assert "def" in out and "return" in out
+
+def test_class_def():
+    out = es("clase Animal:\n    pasar")
+    assert "class" in out and "pass" in out
+
+def test_booleans_and_none():
+    out = es("x = Verdadero\ny = Falso\nz = Nada")
+    assert "True" in out and "False" in out and "None" in out
+
+def test_try_except():
+    out = es(
+        "intentar:\n"
+        "    imprimir(x)\n"
+        "excepto ErrorDeValor:\n"
+        "    pasar\n"
+        "finalmente:\n"
+        "    pasar"
+    )
+    assert "try" in out and "except" in out and "finally" in out
+    assert "ValueError" in out
+
+# ---------------------------------------------------------------------------
+# Safety — strings and comments must never be touched
+# ---------------------------------------------------------------------------
+
+def test_strings_not_transpiled():
+    out = es('x = "si esto es para mientras definir"')
+    assert '"si esto es para mientras definir"' in out
+
+def test_comments_not_transpiled():
+    out = es("# si para mientras\nx = 1")
+    assert "# si para mientras" in out
+
+def test_fstring_not_touched():
+    out = es('imprimir(f"si {x} para")')
+    assert "si" in out  # inside the string, untouched
+
+# ---------------------------------------------------------------------------
+# Output is always valid Python
+# ---------------------------------------------------------------------------
+
+def test_output_is_valid_python():
+    out = es(
+        "definir sumar(a, b):\n"
+        "    retornar a + b\n\n"
+        "para i en rango(5):\n"
+        "    imprimir(sumar(i, 1))\n"
+    )
+    ast.parse(out)  # raises if invalid
+
+# ---------------------------------------------------------------------------
+# Language detection
+# ---------------------------------------------------------------------------
+
+def test_detect_lang_from_extension():
+    assert _detect_lang(Path("script.es.py")) == "es"
+    assert _detect_lang(Path("script.ta.py")) == "ta"
+
+def test_detect_lang_bad_extension():
+    with pytest.raises(ValueError):
+        _detect_lang(Path("script.py"))
+
+# ---------------------------------------------------------------------------
+# Shebang override
+# ---------------------------------------------------------------------------
+
+def test_shebang_override():
+    assert _check_shebang("# foreignthon: fr\nsi x:\n    pasar", "es") == "fr"
+
+def test_shebang_default_when_absent():
+    assert _check_shebang("si x:\n    pasar", "es") == "es"