1 files changed, 163 insertions, 0 deletions
diff --git a/cli/js/copy_file_test.ts b/cli/js/copy_file_test.ts
new file mode 100644
index 000000000..72ae43f3e
--- /dev/null
+++ b/cli/js/copy_file_test.ts
@@ -0,0 +1,163 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { testPerm, assert, assertEquals } from "./test_util.ts";
+
+function readFileString(filename: string): string {
+  const dataRead = Deno.readFileSync(filename);
+  const dec = new TextDecoder("utf-8");
+  return dec.decode(dataRead);
+}
+
+function writeFileString(filename: string, s: string): void {
+  const enc = new TextEncoder();
+  const data = enc.encode(s);
+  Deno.writeFileSync(filename, data, { perm: 0o666 });
+}
+
+function assertSameContent(filename1: string, filename2: string): void {
+  const data1 = Deno.readFileSync(filename1);
+  const data2 = Deno.readFileSync(filename2);
+  assertEquals(data1, data2);
+}
+
+testPerm({ read: true, write: true }, function copyFileSyncSuccess(): void {
+  const tempDir = Deno.makeTempDirSync();
+  const fromFilename = tempDir + "/from.txt";
+  const toFilename = tempDir + "/to.txt";
+  writeFileString(fromFilename, "Hello world!");
+  Deno.copyFileSync(fromFilename, toFilename);
+  // No change to original file
+  assertEquals(readFileString(fromFilename), "Hello world!");
+  // Original == Dest
+  assertSameContent(fromFilename, toFilename);
+});
+
+testPerm({ write: true, read: true }, function copyFileSyncFailure(): void {
+  const tempDir = Deno.makeTempDirSync();
+  const fromFilename = tempDir + "/from.txt";
+  const toFilename = tempDir + "/to.txt";
+  // We skip initial writing here, from.txt does not exist
+  let err;
+  try {
+    Deno.copyFileSync(fromFilename, toFilename);
+  } catch (e) {
+    err = e;
+  }
+  assert(!!err);
+  assertEquals(err.kind, Deno.ErrorKind.NotFound);
+  assertEquals(err.name, "NotFound");
+});
+
+testPerm({ write: true, read: false }, function copyFileSyncPerm1(): void {
+  let caughtError = false;
+  try {
+    Deno.copyFileSync("/from.txt", "/to.txt");
+  } catch (e) {
+    caughtError = true;
+    assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+    assertEquals(e.name, "PermissionDenied");
+  }
+  assert(caughtError);
+});
+
+testPerm({ write: false, read: true }, function copyFileSyncPerm2(): void {
+  let caughtError = false;
+  try {
+    Deno.copyFileSync("/from.txt", "/to.txt");
+  } catch (e) {
+    caughtError = true;
+    assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+    assertEquals(e.name, "PermissionDenied");
+  }
+  assert(caughtError);
+});
+
+testPerm({ read: true, write: true }, function copyFileSyncOverwrite(): void {
+  const tempDir = Deno.makeTempDirSync();
+  const fromFilename = tempDir + "/from.txt";
+  const toFilename = tempDir + "/to.txt";
+  writeFileString(fromFilename, "Hello world!");
+  // Make Dest exist and have different content
+  writeFileString(toFilename, "Goodbye!");
+  Deno.copyFileSync(fromFilename, toFilename);
+  // No change to original file
+  assertEquals(readFileString(fromFilename), "Hello world!");
+  // Original == Dest
+  assertSameContent(fromFilename, toFilename);
+});
+
+testPerm({ read: true, write: true }, async function copyFileSuccess(): Promise<
+  void
+> {
+  const tempDir = Deno.makeTempDirSync();
+  const fromFilename = tempDir + "/from.txt";
+  const toFilename = tempDir + "/to.txt";
+  writeFileString(fromFilename, "Hello world!");
+  await Deno.copyFile(fromFilename, toFilename);
+  // No change to original file
+  assertEquals(readFileString(fromFilename), "Hello world!");
+  // Original == Dest
+  assertSameContent(fromFilename, toFilename);
+});
+
+testPerm({ read: true, write: true }, async function copyFileFailure(): Promise<
+  void
+> {
+  const tempDir = Deno.makeTempDirSync();
+  const fromFilename = tempDir + "/from.txt";
+  const toFilename = tempDir + "/to.txt";
+  // We skip initial writing here, from.txt does not exist
+  let err;
+  try {
+    await Deno.copyFile(fromFilename, toFilename);
+  } catch (e) {
+    err = e;
+  }
+  assert(!!err);
+  assertEquals(err.kind, Deno.ErrorKind.NotFound);
+  assertEquals(err.name, "NotFound");
+});
+
+testPerm(
+  { read: true, write: true },
+  async function copyFileOverwrite(): Promise<void> {
+    const tempDir = Deno.makeTempDirSync();
+    const fromFilename = tempDir + "/from.txt";
+    const toFilename = tempDir + "/to.txt";
+    writeFileString(fromFilename, "Hello world!");
+    // Make Dest exist and have different content
+    writeFileString(toFilename, "Goodbye!");
+    await Deno.copyFile(fromFilename, toFilename);
+    // No change to original file
+    assertEquals(readFileString(fromFilename), "Hello world!");
+    // Original == Dest
+    assertSameContent(fromFilename, toFilename);
+  }
+);
+
+testPerm({ read: false, write: true }, async function copyFilePerm1(): Promise<
+  void
+> {
+  let caughtError = false;
+  try {
+    await Deno.copyFile("/from.txt", "/to.txt");
+  } catch (e) {
+    caughtError = true;
+    assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+    assertEquals(e.name, "PermissionDenied");
+  }
+  assert(caughtError);
+});
+
+testPerm({ read: true, write: false }, async function copyFilePerm2(): Promise<
+  void
+> {
+  let caughtError = false;
+  try {
+    await Deno.copyFile("/from.txt", "/to.txt");
+  } catch (e) {
+    caughtError = true;
+    assertEquals(e.kind, Deno.ErrorKind.PermissionDenied);
+    assertEquals(e.name, "PermissionDenied");
+  }
+  assert(caughtError);
+});