Improve console and stringify.

1 files changed, 71 insertions, 0 deletions

diff --git a/tests.ts b/tests.ts
index 406ac76e8..f1412e152 100644
--- a/tests.ts
+++ b/tests.ts
@@ -55,3 +55,74 @@ test(async function tests_writeFileSync() {
   const actual = dec.decode(dataRead);
   assertEqual("Hello", actual);
 });
+
+test(function tests_console_assert() {
+  console.assert(true);
+
+  let hasThrown = false;
+  try {
+    console.assert(false);
+  } catch {
+    hasThrown = true;
+  }
+  assertEqual(hasThrown, true);
+});
+
+test(function tests_console_stringify_circular() {
+  class Base {
+    a = 1;
+    m1() {}
+  }
+
+  class Extended extends Base {
+    b = 2;
+    m2() {}
+  }
+
+  // tslint:disable-next-line:no-any
+  const nestedObj: any = {
+    num: 1,
+    bool: true,
+    str: "a",
+    method() {},
+    un: undefined,
+    nu: null,
+    arrowFunc: () => {},
+    extendedClass: new Extended(),
+    nFunc: new Function(),
+    extendedCstr: Extended,
+  };
+
+  const circularObj = {
+    num: 2,
+    bool: false,
+    str: "b",
+    method() {},
+    un: undefined,
+    nu: null,
+    nested: nestedObj,
+    emptyObj: {},
+    arr: [1, "s", false, null, nestedObj],
+    baseClass: new Base(),
+  };
+
+  nestedObj.o = circularObj;
+
+  try {
+    console.log(1);
+    console.log("s");
+    console.log(false);
+    console.log(Symbol(1));
+    console.log(null);
+    console.log(undefined);
+    console.log(new Extended());
+    console.log(function f() {});
+    console.log(nestedObj);
+    console.log(JSON);
+    console.log(console);
+  } catch {
+    throw new Error(
+      "Expected no crash on circular object"
+    );
+  }
+});