1 files changed, 9 insertions, 0 deletions
diff --git a/lambda-calcul/javascript/test/interpreter.test.js b/lambda-calcul/javascript/test/interpreter.test.js
new file mode 100644
index 0000000..a859bfe
--- /dev/null
+++ b/lambda-calcul/javascript/test/interpreter.test.js
@@ -0,0 +1,9 @@
+const { σ } = require('../src/internals');
+const { evaluate } = require('../src/interpreter');
+
+describe('An interpreter', () => {
+  it('evaluates symbols', () => {
+    expect(evaluate(σ('x'))).toEqual(σ('x'));
+    expect(evaluate(σ('y'))).toEqual(σ('y'));
+  });
+});