1 files changed, 91 insertions, 0 deletions
diff --git a/std/archive/tar_test.ts b/std/archive/tar_test.ts
new file mode 100644
index 000000000..474e1e2d3
--- /dev/null
+++ b/std/archive/tar_test.ts
@@ -0,0 +1,91 @@
+/**
+ * Tar test
+ *
+ * **test summary**
+ * - create a tar archive in memory containing output.txt and dir/tar.ts.
+ * - read and deflate a tar archive containing output.txt
+ *
+ * **to run this test**
+ * deno run --allow-read archive/tar_test.ts
+ */
+import { test, runIfMain } from "../testing/mod.ts";
+import { assertEquals } from "../testing/asserts.ts";
+
+import { Tar, Untar } from "./tar.ts";
+import { resolve } from "../fs/path/mod.ts";
+
+const filePath = resolve("archive", "testdata", "example.txt");
+
+test(async function createTarArchive(): Promise<void> {
+  // initialize
+  const tar = new Tar();
+
+  // put data on memory
+  const content = new TextEncoder().encode("hello tar world!");
+  await tar.append("output.txt", {
+    reader: new Deno.Buffer(content),
+    contentSize: content.byteLength
+  });
+
+  // put a file
+  await tar.append("dir/tar.ts", { filePath });
+
+  // write tar data to a buffer
+  const writer = new Deno.Buffer(),
+    wrote = await Deno.copy(writer, tar.getReader());
+
+  /**
+   * 3072 = 512 (header) + 512 (content) + 512 (header) + 512 (content)
+   *       + 1024 (footer)
+   */
+  assertEquals(wrote, 3072);
+});
+
+test(async function deflateTarArchive(): Promise<void> {
+  const fileName = "output.txt";
+  const text = "hello tar world!";
+
+  // create a tar archive
+  const tar = new Tar();
+  const content = new TextEncoder().encode(text);
+  await tar.append(fileName, {
+    reader: new Deno.Buffer(content),
+    contentSize: content.byteLength
+  });
+
+  // read data from a tar archive
+  const untar = new Untar(tar.getReader());
+  const buf = new Deno.Buffer();
+  const result = await untar.extract(buf);
+  const untarText = new TextDecoder("utf-8").decode(buf.bytes());
+
+  // tests
+  assertEquals(result.fileName, fileName);
+  assertEquals(untarText, text);
+});
+
+test(async function appendFileWithLongNameToTarArchive(): Promise<void> {
+  // 9 * 15 + 13 = 148 bytes
+  const fileName = new Array(10).join("long-file-name/") + "file-name.txt";
+  const text = "hello tar world!";
+
+  // create a tar archive
+  const tar = new Tar();
+  const content = new TextEncoder().encode(text);
+  await tar.append(fileName, {
+    reader: new Deno.Buffer(content),
+    contentSize: content.byteLength
+  });
+
+  // read data from a tar archive
+  const untar = new Untar(tar.getReader());
+  const buf = new Deno.Buffer();
+  const result = await untar.extract(buf);
+  const untarText = new TextDecoder("utf-8").decode(buf.bytes());
+
+  // tests
+  assertEquals(result.fileName, fileName);
+  assertEquals(untarText, text);
+});
+
+runIfMain(import.meta);