test: add unit tests from std/node (#17794)

Adds two test files: "cli/tests/unit_node/process_test.ts" and
"cli/tests/unit_node/child_process_test.ts"

---------

Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/cli/tests/unit_node/testdata/binary_stdio.js b/cli/tests/unit_node/testdata/binary_stdio.js
new file mode 100644
index 000000000..aa370a933
--- /dev/null
+++ b/cli/tests/unit_node/testdata/binary_stdio.js
@@ -0,0 +1,11 @@
+const buffer = new Uint8Array(10);
+const nread = await Deno.stdin.read(buffer);
+
+if (nread != 10) {
+  throw new Error("Too little data read");
+}
+
+const nwritten = await Deno.stdout.write(buffer);
+if (nwritten != 10) {
+  throw new Error("Too little data written");
+}