1 files changed, 9 insertions, 0 deletions
diff --git a/lambda-calcul/javascript/test/printer.test.js b/lambda-calcul/javascript/test/printer.test.js
new file mode 100644
index 0000000..1684d31
--- /dev/null
+++ b/lambda-calcul/javascript/test/printer.test.js
@@ -0,0 +1,9 @@
+const { σ } = require('../src/internals');
+const { print } = require('../src/printer');
+
+describe('A printer', () => {
+  it('prints symbols', () => {
+    expect(print(σ('x'))).toEqual('x');
+    expect(print(σ('y'))).toEqual('y');
+  });
+});