1 files changed, 553 insertions, 0 deletions
diff --git a/std/fs/copy_test.ts b/std/fs/copy_test.ts
new file mode 100644
index 000000000..347d2532c
--- /dev/null
+++ b/std/fs/copy_test.ts
@@ -0,0 +1,553 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import {
+  assertEquals,
+  assertThrows,
+  assertThrowsAsync,
+  assert
+} from "../testing/asserts.ts";
+import { copy, copySync } from "./copy.ts";
+import { exists, existsSync } from "./exists.ts";
+import * as path from "./path/mod.ts";
+import { ensureDir, ensureDirSync } from "./ensure_dir.ts";
+import { ensureFile, ensureFileSync } from "./ensure_file.ts";
+import { ensureSymlink, ensureSymlinkSync } from "./ensure_symlink.ts";
+
+const testdataDir = path.resolve("fs", "testdata");
+
+// TODO(axetroy): Add test for Windows once symlink is implemented for Windows.
+const isWindows = Deno.build.os === "win";
+
+async function testCopy(
+  name: string,
+  cb: (tempDir: string) => Promise<void>
+): Promise<void> {
+  test({
+    name,
+    async fn(): Promise<void> {
+      const tempDir = await Deno.makeTempDir({
+        prefix: "deno_std_copy_async_test_"
+      });
+      await cb(tempDir);
+      await Deno.remove(tempDir, { recursive: true });
+    }
+  });
+}
+
+function testCopySync(name: string, cb: (tempDir: string) => void): void {
+  test({
+    name,
+    fn: (): void => {
+      const tempDir = Deno.makeTempDirSync({
+        prefix: "deno_std_copy_sync_test_"
+      });
+      cb(tempDir);
+      Deno.removeSync(tempDir, { recursive: true });
+    }
+  });
+}
+
+testCopy(
+  "[fs] copy file if it does no exist",
+  async (tempDir: string): Promise<void> => {
+    const srcFile = path.join(testdataDir, "copy_file_not_exists.txt");
+    const destFile = path.join(tempDir, "copy_file_not_exists_1.txt");
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await copy(srcFile, destFile);
+      }
+    );
+  }
+);
+
+testCopy(
+  "[fs] copy if src and dest are the same paths",
+  async (tempDir: string): Promise<void> => {
+    const srcFile = path.join(tempDir, "copy_file_same.txt");
+    const destFile = path.join(tempDir, "copy_file_same.txt");
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await copy(srcFile, destFile);
+      },
+      Error,
+      "Source and destination cannot be the same."
+    );
+  }
+);
+
+testCopy(
+  "[fs] copy file",
+  async (tempDir: string): Promise<void> => {
+    const srcFile = path.join(testdataDir, "copy_file.txt");
+    const destFile = path.join(tempDir, "copy_file_copy.txt");
+
+    const srcContent = new TextDecoder().decode(await Deno.readFile(srcFile));
+
+    assertEquals(
+      await exists(srcFile),
+      true,
+      `source should exist before copy`
+    );
+    assertEquals(
+      await exists(destFile),
+      false,
+      "destination should not exist before copy"
+    );
+
+    await copy(srcFile, destFile);
+
+    assertEquals(await exists(srcFile), true, "source should exist after copy");
+    assertEquals(
+      await exists(destFile),
+      true,
+      "destination should exist before copy"
+    );
+
+    const destContent = new TextDecoder().decode(await Deno.readFile(destFile));
+
+    assertEquals(
+      srcContent,
+      destContent,
+      "source and destination should have the same content"
+    );
+
+    // Copy again and it should throw an error.
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await copy(srcFile, destFile);
+      },
+      Error,
+      `'${destFile}' already exists.`
+    );
+
+    // Modify destination file.
+    await Deno.writeFile(destFile, new TextEncoder().encode("txt copy"));
+
+    assertEquals(
+      new TextDecoder().decode(await Deno.readFile(destFile)),
+      "txt copy"
+    );
+
+    // Copy again with overwrite option.
+    await copy(srcFile, destFile, { overwrite: true });
+
+    // Make sure the file has been overwritten.
+    assertEquals(
+      new TextDecoder().decode(await Deno.readFile(destFile)),
+      "txt"
+    );
+  }
+);
+
+testCopy(
+  "[fs] copy with preserve timestamps",
+  async (tempDir: string): Promise<void> => {
+    const srcFile = path.join(testdataDir, "copy_file.txt");
+    const destFile = path.join(tempDir, "copy_file_copy.txt");
+
+    const srcStatInfo = await Deno.stat(srcFile);
+
+    assert(typeof srcStatInfo.accessed === "number");
+    assert(typeof srcStatInfo.modified === "number");
+
+    // Copy with overwrite and preserve timestamps options.
+    await copy(srcFile, destFile, {
+      overwrite: true,
+      preserveTimestamps: true
+    });
+
+    const destStatInfo = await Deno.stat(destFile);
+
+    assert(typeof destStatInfo.accessed === "number");
+    assert(typeof destStatInfo.modified === "number");
+    assertEquals(destStatInfo.accessed, srcStatInfo.accessed);
+    assertEquals(destStatInfo.modified, srcStatInfo.modified);
+  }
+);
+
+testCopy(
+  "[fs] copy directory to its subdirectory",
+  async (tempDir: string): Promise<void> => {
+    const srcDir = path.join(tempDir, "parent");
+    const destDir = path.join(srcDir, "child");
+
+    await ensureDir(srcDir);
+
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await copy(srcDir, destDir);
+      },
+      Error,
+      `Cannot copy '${srcDir}' to a subdirectory of itself, '${destDir}'.`
+    );
+  }
+);
+
+testCopy(
+  "[fs] copy directory and destination exist and not a directory",
+  async (tempDir: string): Promise<void> => {
+    const srcDir = path.join(tempDir, "parent");
+    const destDir = path.join(tempDir, "child.txt");
+
+    await ensureDir(srcDir);
+    await ensureFile(destDir);
+
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await copy(srcDir, destDir);
+      },
+      Error,
+      `Cannot overwrite non-directory '${destDir}' with directory '${srcDir}'.`
+    );
+  }
+);
+
+testCopy(
+  "[fs] copy directory",
+  async (tempDir: string): Promise<void> => {
+    const srcDir = path.join(testdataDir, "copy_dir");
+    const destDir = path.join(tempDir, "copy_dir");
+    const srcFile = path.join(srcDir, "0.txt");
+    const destFile = path.join(destDir, "0.txt");
+    const srcNestFile = path.join(srcDir, "nest", "0.txt");
+    const destNestFile = path.join(destDir, "nest", "0.txt");
+
+    await copy(srcDir, destDir);
+
+    assertEquals(await exists(destFile), true);
+    assertEquals(await exists(destNestFile), true);
+
+    // After copy. The source and destination should have the same content.
+    assertEquals(
+      new TextDecoder().decode(await Deno.readFile(srcFile)),
+      new TextDecoder().decode(await Deno.readFile(destFile))
+    );
+    assertEquals(
+      new TextDecoder().decode(await Deno.readFile(srcNestFile)),
+      new TextDecoder().decode(await Deno.readFile(destNestFile))
+    );
+
+    // Copy again without overwrite option and it should throw an error.
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await copy(srcDir, destDir);
+      },
+      Error,
+      `'${destDir}' already exists.`
+    );
+
+    // Modify the file in the destination directory.
+    await Deno.writeFile(destNestFile, new TextEncoder().encode("nest copy"));
+    assertEquals(
+      new TextDecoder().decode(await Deno.readFile(destNestFile)),
+      "nest copy"
+    );
+
+    // Copy again with overwrite option.
+    await copy(srcDir, destDir, { overwrite: true });
+
+    // Make sure the file has been overwritten.
+    assertEquals(
+      new TextDecoder().decode(await Deno.readFile(destNestFile)),
+      "nest"
+    );
+  }
+);
+
+testCopy(
+  "[fs] copy symlink file",
+  async (tempDir: string): Promise<void> => {
+    const dir = path.join(testdataDir, "copy_dir_link_file");
+    const srcLink = path.join(dir, "0.txt");
+    const destLink = path.join(tempDir, "0_copy.txt");
+
+    if (isWindows) {
+      await assertThrowsAsync(
+        // (): Promise<void> => copy(srcLink, destLink),
+        (): Promise<void> => ensureSymlink(srcLink, destLink)
+      );
+      return;
+    }
+
+    assert(
+      (await Deno.lstat(srcLink)).isSymlink(),
+      `'${srcLink}' should be symlink type`
+    );
+
+    await copy(srcLink, destLink);
+
+    const statInfo = await Deno.lstat(destLink);
+
+    assert(statInfo.isSymlink(), `'${destLink}' should be symlink type`);
+  }
+);
+
+testCopy(
+  "[fs] copy symlink directory",
+  async (tempDir: string): Promise<void> => {
+    const srcDir = path.join(testdataDir, "copy_dir");
+    const srcLink = path.join(tempDir, "copy_dir_link");
+    const destLink = path.join(tempDir, "copy_dir_link_copy");
+
+    if (isWindows) {
+      await assertThrowsAsync(
+        // (): Promise<void> => copy(srcLink, destLink),
+        (): Promise<void> => ensureSymlink(srcLink, destLink)
+      );
+      return;
+    }
+
+    await ensureSymlink(srcDir, srcLink);
+
+    assert(
+      (await Deno.lstat(srcLink)).isSymlink(),
+      `'${srcLink}' should be symlink type`
+    );
+
+    await copy(srcLink, destLink);
+
+    const statInfo = await Deno.lstat(destLink);
+
+    assert(statInfo.isSymlink());
+  }
+);
+
+testCopySync(
+  "[fs] copy file synchronously if it does not exist",
+  (tempDir: string): void => {
+    const srcFile = path.join(testdataDir, "copy_file_not_exists_sync.txt");
+    const destFile = path.join(tempDir, "copy_file_not_exists_1_sync.txt");
+    assertThrows((): void => {
+      copySync(srcFile, destFile);
+    });
+  }
+);
+
+testCopySync(
+  "[fs] copy synchronously with preserve timestamps",
+  (tempDir: string): void => {
+    const srcFile = path.join(testdataDir, "copy_file.txt");
+    const destFile = path.join(tempDir, "copy_file_copy.txt");
+
+    const srcStatInfo = Deno.statSync(srcFile);
+
+    assert(typeof srcStatInfo.accessed === "number");
+    assert(typeof srcStatInfo.modified === "number");
+
+    // Copy with overwrite and preserve timestamps options.
+    copySync(srcFile, destFile, {
+      overwrite: true,
+      preserveTimestamps: true
+    });
+
+    const destStatInfo = Deno.statSync(destFile);
+
+    assert(typeof destStatInfo.accessed === "number");
+    assert(typeof destStatInfo.modified === "number");
+    // TODO: Activate test when https://github.com/denoland/deno/issues/2411
+    // is fixed
+    // assertEquals(destStatInfo.accessed, srcStatInfo.accessed);
+    // assertEquals(destStatInfo.modified, srcStatInfo.modified);
+  }
+);
+
+testCopySync(
+  "[fs] copy synchronously if src and dest are the same paths",
+  (): void => {
+    const srcFile = path.join(testdataDir, "copy_file_same_sync.txt");
+    assertThrows(
+      (): void => {
+        copySync(srcFile, srcFile);
+      },
+      Error,
+      "Source and destination cannot be the same."
+    );
+  }
+);
+
+testCopySync("[fs] copy file synchronously", (tempDir: string): void => {
+  const srcFile = path.join(testdataDir, "copy_file.txt");
+  const destFile = path.join(tempDir, "copy_file_copy_sync.txt");
+
+  const srcContent = new TextDecoder().decode(Deno.readFileSync(srcFile));
+
+  assertEquals(existsSync(srcFile), true);
+  assertEquals(existsSync(destFile), false);
+
+  copySync(srcFile, destFile);
+
+  assertEquals(existsSync(srcFile), true);
+  assertEquals(existsSync(destFile), true);
+
+  const destContent = new TextDecoder().decode(Deno.readFileSync(destFile));
+
+  assertEquals(srcContent, destContent);
+
+  // Copy again without overwrite option and it should throw an error.
+  assertThrows(
+    (): void => {
+      copySync(srcFile, destFile);
+    },
+    Error,
+    `'${destFile}' already exists.`
+  );
+
+  // Modify destination file.
+  Deno.writeFileSync(destFile, new TextEncoder().encode("txt copy"));
+
+  assertEquals(
+    new TextDecoder().decode(Deno.readFileSync(destFile)),
+    "txt copy"
+  );
+
+  // Copy again with overwrite option.
+  copySync(srcFile, destFile, { overwrite: true });
+
+  // Make sure the file has been overwritten.
+  assertEquals(new TextDecoder().decode(Deno.readFileSync(destFile)), "txt");
+});
+
+testCopySync(
+  "[fs] copy directory synchronously to its subdirectory",
+  (tempDir: string): void => {
+    const srcDir = path.join(tempDir, "parent");
+    const destDir = path.join(srcDir, "child");
+
+    ensureDirSync(srcDir);
+
+    assertThrows(
+      (): void => {
+        copySync(srcDir, destDir);
+      },
+      Error,
+      `Cannot copy '${srcDir}' to a subdirectory of itself, '${destDir}'.`
+    );
+  }
+);
+
+testCopySync(
+  "[fs] copy directory synchronously, and destination exist and not a " +
+    "directory",
+  (tempDir: string): void => {
+    const srcDir = path.join(tempDir, "parent_sync");
+    const destDir = path.join(tempDir, "child.txt");
+
+    ensureDirSync(srcDir);
+    ensureFileSync(destDir);
+
+    assertThrows(
+      (): void => {
+        copySync(srcDir, destDir);
+      },
+      Error,
+      `Cannot overwrite non-directory '${destDir}' with directory '${srcDir}'.`
+    );
+  }
+);
+
+testCopySync("[fs] copy directory synchronously", (tempDir: string): void => {
+  const srcDir = path.join(testdataDir, "copy_dir");
+  const destDir = path.join(tempDir, "copy_dir_copy_sync");
+  const srcFile = path.join(srcDir, "0.txt");
+  const destFile = path.join(destDir, "0.txt");
+  const srcNestFile = path.join(srcDir, "nest", "0.txt");
+  const destNestFile = path.join(destDir, "nest", "0.txt");
+
+  copySync(srcDir, destDir);
+
+  assertEquals(existsSync(destFile), true);
+  assertEquals(existsSync(destNestFile), true);
+
+  // After copy. The source and destination should have the same content.
+  assertEquals(
+    new TextDecoder().decode(Deno.readFileSync(srcFile)),
+    new TextDecoder().decode(Deno.readFileSync(destFile))
+  );
+  assertEquals(
+    new TextDecoder().decode(Deno.readFileSync(srcNestFile)),
+    new TextDecoder().decode(Deno.readFileSync(destNestFile))
+  );
+
+  // Copy again without overwrite option and it should throw an error.
+  assertThrows(
+    (): void => {
+      copySync(srcDir, destDir);
+    },
+    Error,
+    `'${destDir}' already exists.`
+  );
+
+  // Modify the file in the destination directory.
+  Deno.writeFileSync(destNestFile, new TextEncoder().encode("nest copy"));
+  assertEquals(
+    new TextDecoder().decode(Deno.readFileSync(destNestFile)),
+    "nest copy"
+  );
+
+  // Copy again with overwrite option.
+  copySync(srcDir, destDir, { overwrite: true });
+
+  // Make sure the file has been overwritten.
+  assertEquals(
+    new TextDecoder().decode(Deno.readFileSync(destNestFile)),
+    "nest"
+  );
+});
+
+testCopySync(
+  "[fs] copy symlink file synchronously",
+  (tempDir: string): void => {
+    const dir = path.join(testdataDir, "copy_dir_link_file");
+    const srcLink = path.join(dir, "0.txt");
+    const destLink = path.join(tempDir, "0_copy.txt");
+
+    if (isWindows) {
+      assertThrows(
+        // (): void => copySync(srcLink, destLink),
+        (): void => ensureSymlinkSync(srcLink, destLink)
+      );
+      return;
+    }
+
+    assert(
+      Deno.lstatSync(srcLink).isSymlink(),
+      `'${srcLink}' should be symlink type`
+    );
+
+    copySync(srcLink, destLink);
+
+    const statInfo = Deno.lstatSync(destLink);
+
+    assert(statInfo.isSymlink(), `'${destLink}' should be symlink type`);
+  }
+);
+
+testCopySync(
+  "[fs] copy symlink directory synchronously",
+  (tempDir: string): void => {
+    const originDir = path.join(testdataDir, "copy_dir");
+    const srcLink = path.join(tempDir, "copy_dir_link");
+    const destLink = path.join(tempDir, "copy_dir_link_copy");
+
+    if (isWindows) {
+      assertThrows(
+        // (): void => copySync(srcLink, destLink),
+        (): void => ensureSymlinkSync(srcLink, destLink)
+      );
+      return;
+    }
+
+    ensureSymlinkSync(originDir, srcLink);
+
+    assert(
+      Deno.lstatSync(srcLink).isSymlink(),
+      `'${srcLink}' should be symlink type`
+    );
+
+    copySync(srcLink, destLink);
+
+    const statInfo = Deno.lstatSync(destLink);
+
+    assert(statInfo.isSymlink());
+  }
+);