1 files changed, 94 insertions, 0 deletions
diff --git a/test/defs.test.js b/test/defs.test.js
new file mode 100644
index 0000000..4cc0ad9
--- /dev/null
+++ b/test/defs.test.js
@@ -0,0 +1,94 @@
+const defs = require('../src/defs.js');
+
+
+const unicode_tests = [
+    {
+        description: "Convert normal ascii string",
+        literal: "foo",
+        byte_array: defs.luastring_of("f".charCodeAt(0), "o".charCodeAt(0), "o".charCodeAt(0))
+    },
+    {
+        description: "Convert ascii string containing null byte",
+        literal: "fo\0o",
+        byte_array: defs.luastring_of("f".charCodeAt(0), "o".charCodeAt(0), 0, "o".charCodeAt(0))
+    },
+    {
+        description: "Convert string with BMP unicode chars",
+        literal: "Café",
+        byte_array: defs.luastring_of(67, 97, 102, 195, 169)
+    },
+    {
+        description: "Convert string with codepoint in PUA (U+E000 to U+F8FF)",
+        literal: "",
+        byte_array: defs.luastring_of(239, 163, 191)
+    },
+    {
+        description: "Convert string with surrogate pair",
+        literal: "❤️🍾",
+        byte_array: defs.luastring_of(226, 157, 164, 239, 184, 143, 240, 159, 141, 190)
+    },
+    {
+        description: "Convert string with broken surrogate pair",
+        literal: "\uD800a",
+        byte_array: defs.luastring_of(237, 160, 128, 97)
+    },
+    {
+        description: "Convert string with broken surrogate pair at end of string",
+        literal: "\uD823",
+        byte_array: defs.luastring_of(237, 160, 163)
+    }
+];
+
+describe('to_luastring', () => {
+    unicode_tests.forEach((v) => {
+        test(v.description, () => {
+            expect(defs.to_luastring(v.literal)).toEqual(v.byte_array);
+        });
+    });
+});
+
+describe('to_jsstring', () => {
+    unicode_tests.forEach((v) => {
+        test(v.description, () => {
+            expect(defs.to_jsstring(v.byte_array)).toEqual(v.literal);
+        });
+    });
+});
+
+
+describe('to_jsstring fails on invalid unicode', () => {
+    test("non-utf8 char", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(165)))
+            .toThrowError(RangeError);
+    });
+
+    test("invalid continuation byte", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(208, 60)))
+            .toThrowError(RangeError);
+    });
+
+    test("invalid continuation byte", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(225, 60, 145)))
+            .toThrowError(RangeError);
+    });
+
+    test("invalid continuation byte", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(225, 145, 60)))
+            .toThrowError(RangeError);
+    });
+
+    test("invalid continuation byte", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(242, 60, 145, 145)))
+            .toThrowError(RangeError);
+    });
+
+    test("invalid continuation byte", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(242, 145, 60, 145)))
+            .toThrowError(RangeError);
+    });
+
+    test("invalid continuation byte", () => {
+        expect(() => defs.to_jsstring(defs.luastring_of(242, 145, 145, 60)))
+            .toThrowError(RangeError);
+    });
+});