1 files changed, 32 insertions, 0 deletions
diff --git a/node_modules/@webassemblyjs/helper-module-context/test/index.js b/node_modules/@webassemblyjs/helper-module-context/test/index.js
new file mode 100644
index 00000000..06005d60
--- /dev/null
+++ b/node_modules/@webassemblyjs/helper-module-context/test/index.js
@@ -0,0 +1,32 @@
+const { assert } = require("chai");
+const { parse } = require("@webassemblyjs/wast-parser");
+
+const { moduleContextFromModuleAST } = require("../lib");
+
+const contextFromWast = wast => moduleContextFromModuleAST(parse(wast).body[0]);
+
+describe("module context", () => {
+  describe("start segment", () => {
+    it("should return the start function offset", () => {
+      const context = contextFromWast(`
+        (module
+          (func)
+          (func)
+          (start 1)
+        )
+      `);
+
+      assert.isOk(context.getStart());
+      assert.typeOf(context.getStart(), "number");
+      assert.equal(context.getStart(), 1);
+    });
+
+    it("should return null if no start function", () => {
+      const context = contextFromWast(`
+        (module (func))
+      `);
+
+      assert.isNull(context.getStart());
+    });
+  });
+});