textproto: fix invalid header error and move tests (denoland/deno_std#369)

Original: https://github.com/denoland/deno_std/commit/b6aaddbcc060287e8c349a875a19df8fcd0620f3

1 files changed, 167 insertions, 0 deletions

diff --git a/textproto/reader_test.ts b/textproto/reader_test.ts
new file mode 100644
index 000000000..b319e7809
--- /dev/null
+++ b/textproto/reader_test.ts
@@ -0,0 +1,167 @@
+// Based on https://github.com/golang/go/blob/master/src/net/textproto/reader_test.go
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+import { BufReader } from "../io/bufio.ts";
+import { TextProtoReader, ProtocolError } from "./mod.ts";
+import { stringsReader } from "../io/util.ts";
+import { assert, assertEquals, assertThrows } from "../testing/asserts.ts";
+import { test } from "../testing/mod.ts";
+
+function reader(s: string): TextProtoReader {
+  return new TextProtoReader(new BufReader(stringsReader(s)));
+}
+// test({
+//   name: "[textproto] Reader : DotBytes",
+//   async fn(): Promise<void> {
+//     const input =
+//       "dotlines\r\n.foo\r\n..bar\n...baz\nquux\r\n\r\n.\r\nanot.her\r\n";
+//   }
+// });
+
+test(async function textprotoReadEmpty(): Promise<void> {
+  let r = reader("");
+  let [, err] = await r.readMIMEHeader();
+  // Should not crash!
+  assertEquals(err, "EOF");
+});
+
+test(async function textprotoReader(): Promise<void> {
+  let r = reader("line1\nline2\n");
+  let [s, err] = await r.readLine();
+  assertEquals(s, "line1");
+  assert(err == null);
+
+  [s, err] = await r.readLine();
+  assertEquals(s, "line2");
+  assert(err == null);
+
+  [s, err] = await r.readLine();
+  assertEquals(s, "");
+  assert(err == "EOF");
+});
+
+test({
+  name: "[textproto] Reader : MIME Header",
+  async fn(): Promise<void> {
+    const input =
+      "my-key: Value 1  \r\nLong-key: Even Longer Value\r\nmy-Key: Value 2\r\n\n";
+    const r = reader(input);
+    const [m, err] = await r.readMIMEHeader();
+    assertEquals(m.get("My-Key"), "Value 1, Value 2");
+    assertEquals(m.get("Long-key"), "Even Longer Value");
+    assert(!err);
+  }
+});
+
+test({
+  name: "[textproto] Reader : MIME Header Single",
+  async fn(): Promise<void> {
+    const input = "Foo: bar\n\n";
+    const r = reader(input);
+    let [m, err] = await r.readMIMEHeader();
+    assertEquals(m.get("Foo"), "bar");
+    assert(!err);
+  }
+});
+
+test({
+  name: "[textproto] Reader : MIME Header No Key",
+  async fn(): Promise<void> {
+    const input = ": bar\ntest-1: 1\n\n";
+    const r = reader(input);
+    let [m, err] = await r.readMIMEHeader();
+    assertEquals(m.get("Test-1"), "1");
+    assert(!err);
+  }
+});
+
+test({
+  name: "[textproto] Reader : Large MIME Header",
+  async fn(): Promise<void> {
+    const data = [];
+    // Go test is 16*1024. But seems it can't handle more
+    for (let i = 0; i < 1024; i++) {
+      data.push("x");
+    }
+    const sdata = data.join("");
+    const r = reader(`Cookie: ${sdata}\r\n`);
+    let [m] = await r.readMIMEHeader();
+    assertEquals(m.get("Cookie"), sdata);
+    // TODO re-enable, here err === "EOF" is has to be null
+    // assert(!err);
+  }
+});
+
+// Test that we read slightly-bogus MIME headers seen in the wild,
+// with spaces before colons, and spaces in keys.
+test({
+  name: "[textproto] Reader : MIME Header Non compliant",
+  async fn(): Promise<void> {
+    const input =
+      "Foo: bar\r\n" +
+      "Content-Language: en\r\n" +
+      "SID : 0\r\n" +
+      "Audio Mode : None\r\n" +
+      "Privilege : 127\r\n\r\n";
+    const r = reader(input);
+    let [m, err] = await r.readMIMEHeader();
+    assertEquals(m.get("Foo"), "bar");
+    assertEquals(m.get("Content-Language"), "en");
+    assertEquals(m.get("SID"), "0");
+    assertEquals(m.get("Privilege"), "127");
+    assert(!err);
+    // Not a legal http header
+    assertThrows(
+      (): void => {
+        assertEquals(m.get("Audio Mode"), "None");
+      }
+    );
+  }
+});
+
+test({
+  name: "[textproto] Reader : MIME Header Malformed",
+  async fn(): Promise<void> {
+    const input = [
+      "No colon first line\r\nFoo: foo\r\n\r\n",
+      " No colon first line with leading space\r\nFoo: foo\r\n\r\n",
+      "\tNo colon first line with leading tab\r\nFoo: foo\r\n\r\n",
+      " First: line with leading space\r\nFoo: foo\r\n\r\n",
+      "\tFirst: line with leading tab\r\nFoo: foo\r\n\r\n",
+      "Foo: foo\r\nNo colon second line\r\n\r\n"
+    ];
+    const r = reader(input.join(""));
+
+    let err;
+    try {
+      await r.readMIMEHeader();
+    } catch (e) {
+      err = e;
+    }
+    assert(err instanceof ProtocolError);
+  }
+});
+
+test({
+  name: "[textproto] Reader : MIME Header Trim Continued",
+  async fn(): Promise<void> {
+    const input =
+      "" + // for code formatting purpose.
+      "a:\n" +
+      " 0 \r\n" +
+      "b:1 \t\r\n" +
+      "c: 2\r\n" +
+      " 3\t\n" +
+      "  \t 4  \r\n\n";
+    const r = reader(input);
+    let err;
+    try {
+      await r.readMIMEHeader();
+    } catch (e) {
+      err = e;
+    }
+    assert(err instanceof ProtocolError);
+  }
+});