3 files changed, 12 insertions, 0 deletions
diff --git a/tests/014_duplicate_import.ts b/tests/014_duplicate_import.ts
new file mode 100644
index 000000000..88f934526
--- /dev/null
+++ b/tests/014_duplicate_import.ts
@@ -0,0 +1,9 @@
+// with all the imports of the same module, the module should only be
+// instantiated once
+import "./subdir/auto_print_hello.ts";
+
+import "./subdir/auto_print_hello.ts";
+
+(async () => {
+  await import("./subdir/auto_print_hello.ts");
+})();
diff --git a/tests/014_duplicate_import.ts.out b/tests/014_duplicate_import.ts.out
new file mode 100644
index 000000000..4effa19f4
--- /dev/null
+++ b/tests/014_duplicate_import.ts.out
@@ -0,0 +1 @@
+hello!
diff --git a/tests/subdir/auto_print_hello.ts b/tests/subdir/auto_print_hello.ts
new file mode 100644
index 000000000..a00040281
--- /dev/null
+++ b/tests/subdir/auto_print_hello.ts
@@ -0,0 +1,2 @@
+console.log("hello!");
+export = {};