From 50328747687d8742795de28bee41f8d42eb64924 Mon Sep 17 00:00:00 2001
From: Kitson Kelly <me@kitsonkelly.com>
Date: Thu, 18 Nov 2021 10:52:00 +1100
Subject: [PATCH] test private_field_presence

---
 cli/tests/integration/run_tests.rs            | 10 ++++++++++
 cli/tests/testdata/import_type.ts             |  5 +++++
 cli/tests/testdata/import_type.ts.out         |  2 ++
 cli/tests/testdata/private_field_presence.ts  | 20 +++++++++++++++++++
 .../testdata/private_field_presence.ts.out    |  3 +++
 cli/tests/testdata/subdir/export_types.ts     | 11 ++++++++++
 6 files changed, 51 insertions(+)
 create mode 100644 cli/tests/testdata/import_type.ts
 create mode 100644 cli/tests/testdata/import_type.ts.out
 create mode 100644 cli/tests/testdata/private_field_presence.ts
 create mode 100644 cli/tests/testdata/private_field_presence.ts.out
 create mode 100644 cli/tests/testdata/subdir/export_types.ts

diff --git a/cli/tests/integration/run_tests.rs b/cli/tests/integration/run_tests.rs
index 33c1507c84018a..47ad7841e70fec 100644
--- a/cli/tests/integration/run_tests.rs
+++ b/cli/tests/integration/run_tests.rs
@@ -573,6 +573,16 @@ itest!(import_type_no_check {
   output: "import_type.ts.out",
 });
 
+itest!(private_field_presence {
+  args: "run --reload private_field_presence.ts",
+  output: "private_field_presence.ts.out",
+});
+
+itest!(private_field_presence_no_check {
+  args: "run --reload --no-check private_field_presence.ts",
+  output: "private_field_presence.ts.out",
+});
+
 itest!(lock_write_requires_lock {
   args: "run --lock-write some_file.ts",
   output: "lock_write_requires_lock.out",
diff --git a/cli/tests/testdata/import_type.ts b/cli/tests/testdata/import_type.ts
new file mode 100644
index 00000000000000..851ebad86ac43e
--- /dev/null
+++ b/cli/tests/testdata/import_type.ts
@@ -0,0 +1,5 @@
+import { type B, create } from "./subdir/export_types.ts";
+
+const b: B = create();
+
+console.log(b);
diff --git a/cli/tests/testdata/import_type.ts.out b/cli/tests/testdata/import_type.ts.out
new file mode 100644
index 00000000000000..188c5e25db796e
--- /dev/null
+++ b/cli/tests/testdata/import_type.ts.out
@@ -0,0 +1,2 @@
+[WILDCARD]
+B { a: "a" }
diff --git a/cli/tests/testdata/private_field_presence.ts b/cli/tests/testdata/private_field_presence.ts
new file mode 100644
index 00000000000000..7ce2840d8e3edd
--- /dev/null
+++ b/cli/tests/testdata/private_field_presence.ts
@@ -0,0 +1,20 @@
+export class Person {
+  #name: string;
+  constructor(name: string) {
+    this.#name = name;
+  }
+
+  equals(other: unknown) {
+    return other &&
+      typeof other === "object" &&
+      #name in other &&
+      this.#name === other.#name;
+  }
+}
+
+const a = new Person("alice");
+const b = new Person("bob");
+const c = new Person("alice");
+
+console.log(a.equals(b));
+console.log(a.equals(c));
diff --git a/cli/tests/testdata/private_field_presence.ts.out b/cli/tests/testdata/private_field_presence.ts.out
new file mode 100644
index 00000000000000..f582fb47ad4388
--- /dev/null
+++ b/cli/tests/testdata/private_field_presence.ts.out
@@ -0,0 +1,3 @@
+[WILDCARD]
+false
+true
diff --git a/cli/tests/testdata/subdir/export_types.ts b/cli/tests/testdata/subdir/export_types.ts
new file mode 100644
index 00000000000000..18c8ed8810f7aa
--- /dev/null
+++ b/cli/tests/testdata/subdir/export_types.ts
@@ -0,0 +1,11 @@
+export interface A {
+  a: string;
+}
+
+export class B implements A {
+  a = "a";
+}
+
+export function create(): B {
+  return new B();
+}