5 files changed, 27 insertions, 0 deletions
diff --git a/tests/specs/test/default_ts/__test__.jsonc b/tests/specs/test/default_ts/__test__.jsonc
new file mode 100644
index 000000000..778fca5c5
--- /dev/null
+++ b/tests/specs/test/default_ts/__test__.jsonc
@@ -0,0 +1,13 @@
+{
+  "tempDir": true,
+  "tests": {
+    "ext_flag": {
+      "args": "test --ext=ts as_ts.js",
+      "output": "ext.out"
+    },
+    "extensionless": {
+      "args": "test extensionless",
+      "output": "extensionless.out"
+    }
+  }
+}
diff --git a/tests/specs/test/default_ts/as_ts.js b/tests/specs/test/default_ts/as_ts.js
new file mode 100644
index 000000000..52cb8eacc
--- /dev/null
+++ b/tests/specs/test/default_ts/as_ts.js
@@ -0,0 +1,3 @@
+Deno.test(function foo() {
+  const x: string = "foo";
+});
diff --git a/tests/specs/test/default_ts/ext.out b/tests/specs/test/default_ts/ext.out
new file mode 100644
index 000000000..55f7526a5
--- /dev/null
+++ b/tests/specs/test/default_ts/ext.out
@@ -0,0 +1,4 @@
+Check file:///[WILDCARD]/as_ts.js
+running 1 test from ./as_ts.js
+[WILDCARD]
+
diff --git a/tests/specs/test/default_ts/extensionless b/tests/specs/test/default_ts/extensionless
new file mode 100644
index 000000000..52cb8eacc
--- /dev/null
+++ b/tests/specs/test/default_ts/extensionless
@@ -0,0 +1,3 @@
+Deno.test(function foo() {
+  const x: string = "foo";
+});
diff --git a/tests/specs/test/default_ts/extensionless.out b/tests/specs/test/default_ts/extensionless.out
new file mode 100644
index 000000000..20d4ee2cb
--- /dev/null
+++ b/tests/specs/test/default_ts/extensionless.out
@@ -0,0 +1,4 @@
+Check file:///[WILDCARD]/extensionless
+running 1 test from ./extensionless
+[WILDCARD]
+