1 files changed, 189 insertions, 0 deletions
diff --git a/cli/js/tests/form_data_test.ts b/cli/js/tests/form_data_test.ts
new file mode 100644
index 000000000..9b218547c
--- /dev/null
+++ b/cli/js/tests/form_data_test.ts
@@ -0,0 +1,189 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { unitTest, assert, assertEquals } from "./test_util.ts";
+
+unitTest(function formDataHasCorrectNameProp(): void {
+  assertEquals(FormData.name, "FormData");
+});
+
+unitTest(function formDataParamsAppendSuccess(): void {
+  const formData = new FormData();
+  formData.append("a", "true");
+  assertEquals(formData.get("a"), "true");
+});
+
+unitTest(function formDataParamsDeleteSuccess(): void {
+  const formData = new FormData();
+  formData.append("a", "true");
+  formData.append("b", "false");
+  assertEquals(formData.get("b"), "false");
+  formData.delete("b");
+  assertEquals(formData.get("a"), "true");
+  assertEquals(formData.get("b"), null);
+});
+
+unitTest(function formDataParamsGetAllSuccess(): void {
+  const formData = new FormData();
+  formData.append("a", "true");
+  formData.append("b", "false");
+  formData.append("a", "null");
+  assertEquals(formData.getAll("a"), ["true", "null"]);
+  assertEquals(formData.getAll("b"), ["false"]);
+  assertEquals(formData.getAll("c"), []);
+});
+
+unitTest(function formDataParamsGetSuccess(): void {
+  const formData = new FormData();
+  formData.append("a", "true");
+  formData.append("b", "false");
+  formData.append("a", "null");
+  // @ts-ignore
+  formData.append("d", undefined);
+  // @ts-ignore
+  formData.append("e", null);
+  assertEquals(formData.get("a"), "true");
+  assertEquals(formData.get("b"), "false");
+  assertEquals(formData.get("c"), null);
+  assertEquals(formData.get("d"), "undefined");
+  assertEquals(formData.get("e"), "null");
+});
+
+unitTest(function formDataParamsHasSuccess(): void {
+  const formData = new FormData();
+  formData.append("a", "true");
+  formData.append("b", "false");
+  assert(formData.has("a"));
+  assert(formData.has("b"));
+  assert(!formData.has("c"));
+});
+
+unitTest(function formDataParamsSetSuccess(): void {
+  const formData = new FormData();
+  formData.append("a", "true");
+  formData.append("b", "false");
+  formData.append("a", "null");
+  assertEquals(formData.getAll("a"), ["true", "null"]);
+  assertEquals(formData.getAll("b"), ["false"]);
+  formData.set("a", "false");
+  assertEquals(formData.getAll("a"), ["false"]);
+  // @ts-ignore
+  formData.set("d", undefined);
+  assertEquals(formData.get("d"), "undefined");
+  // @ts-ignore
+  formData.set("e", null);
+  assertEquals(formData.get("e"), "null");
+});
+
+unitTest(function formDataSetEmptyBlobSuccess(): void {
+  const formData = new FormData();
+  formData.set("a", new Blob([]), "blank.txt");
+  formData.get("a");
+  /* TODO Fix this test.
+  assert(file instanceof File);
+  if (typeof file !== "string") {
+    assertEquals(file.name, "blank.txt");
+  }
+  */
+});
+
+unitTest(function formDataParamsForEachSuccess(): void {
+  const init = [
+    ["a", "54"],
+    ["b", "true"]
+  ];
+  const formData = new FormData();
+  for (const [name, value] of init) {
+    formData.append(name, value);
+  }
+  let callNum = 0;
+  formData.forEach((value, key, parent): void => {
+    assertEquals(formData, parent);
+    assertEquals(value, init[callNum][1]);
+    assertEquals(key, init[callNum][0]);
+    callNum++;
+  });
+  assertEquals(callNum, init.length);
+});
+
+unitTest(function formDataParamsArgumentsCheck(): void {
+  const methodRequireOneParam = [
+    "delete",
+    "getAll",
+    "get",
+    "has",
+    "forEach"
+  ] as const;
+
+  const methodRequireTwoParams = ["append", "set"] as const;
+
+  methodRequireOneParam.forEach((method): void => {
+    const formData = new FormData();
+    let hasThrown = 0;
+    let errMsg = "";
+    try {
+      // @ts-ignore
+      formData[method]();
+      hasThrown = 1;
+    } catch (err) {
+      errMsg = err.message;
+      if (err instanceof TypeError) {
+        hasThrown = 2;
+      } else {
+        hasThrown = 3;
+      }
+    }
+    assertEquals(hasThrown, 2);
+    assertEquals(
+      errMsg,
+      `FormData.${method} requires at least 1 argument, but only 0 present`
+    );
+  });
+
+  methodRequireTwoParams.forEach((method: string): void => {
+    const formData = new FormData();
+    let hasThrown = 0;
+    let errMsg = "";
+
+    try {
+      // @ts-ignore
+      formData[method]();
+      hasThrown = 1;
+    } catch (err) {
+      errMsg = err.message;
+      if (err instanceof TypeError) {
+        hasThrown = 2;
+      } else {
+        hasThrown = 3;
+      }
+    }
+    assertEquals(hasThrown, 2);
+    assertEquals(
+      errMsg,
+      `FormData.${method} requires at least 2 arguments, but only 0 present`
+    );
+
+    hasThrown = 0;
+    errMsg = "";
+    try {
+      // @ts-ignore
+      formData[method]("foo");
+      hasThrown = 1;
+    } catch (err) {
+      errMsg = err.message;
+      if (err instanceof TypeError) {
+        hasThrown = 2;
+      } else {
+        hasThrown = 3;
+      }
+    }
+    assertEquals(hasThrown, 2);
+    assertEquals(
+      errMsg,
+      `FormData.${method} requires at least 2 arguments, but only 1 present`
+    );
+  });
+});
+
+unitTest(function toStringShouldBeWebCompatibility(): void {
+  const formData = new FormData();
+  assertEquals(formData.toString(), "[object FormData]");
+});