diff --git a/e2e/binary/bc/BUILD.bazel b/e2e/binary/bc/BUILD.bazel
index a8f7850e4bd126466d089f4e5160b5646ba8b93b..6d937132b7f53c8b0606494dba2deb56c835c15a 100644
--- a/e2e/binary/bc/BUILD.bazel
+++ b/e2e/binary/bc/BUILD.bazel
@@ -1,11 +1,32 @@
-load("@bazel_skylib//rules:build_test.bzl", "build_test")
+load("@rules_python_pytest//python_pytest:defs.bzl", "py_pytest_test")
+load("@bazel_skylib//rules:native_binary.bzl", "native_test")
 
-# TODO: write an _actual_ test for `bc`
+py_pytest_test(
+    name = "pytest",
+    size = "small",
+    srcs = ["calculate.py"],
+    data = [
+        "@ape//ape:bc",
+        "fixture.txt",
+        "expected.txt",
+    ],
+    deps = [
+        "//binary:pytest"
+    ],
+)
 
-build_test(
-    name = "bc",
+native_test(
+    name = "version",
     size = "small",
-    tags = ["stub"],
-    targets = ["@ape//ape:bc"],
+    src = "@ape//ape:bc",
+    visibility = ["//:__subpackages__"],
+)
+
+test_suite(
+    name = "bc",
+    tests = [
+        "pytest",
+        "version",
+    ],
     visibility = ["//:__subpackages__"],
 )
diff --git a/e2e/binary/bc/calculate.py b/e2e/binary/bc/calculate.py
new file mode 100644
index 0000000000000000000000000000000000000000..a08c23c574a7679e15545fd435043780416642e3
--- /dev/null
+++ b/e2e/binary/bc/calculate.py
@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from pathlib import Path
+from subprocess import run
+
+from binary import Tool, Relative, Diff
+
+
+def test_copy(tool: Tool, relative: Relative, tmp_path: Path) -> None:
+    binary = tool("bc")
+    fixture = relative("fixture.txt")
+    expected = relative("expected.txt")
+    output = tmp_path / "output.txt"
+
+    cmd = (binary, fixture)
+    with open(output, "w") as stream:
+        run(cmd, check=True, timeout=30, stdout=stream)
+
+    assert Diff(expected) == Diff(output)
diff --git a/e2e/binary/bc/expected.txt b/e2e/binary/bc/expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..60d3b2f4a4cd5f1637eba020358bfe5ecb5edcf2
--- /dev/null
+++ b/e2e/binary/bc/expected.txt
@@ -0,0 +1 @@
+15
diff --git a/e2e/binary/bc/fixture.txt b/e2e/binary/bc/fixture.txt
new file mode 100644
index 0000000000000000000000000000000000000000..701bda205741402d53ad9c96a1d45a544d049025
--- /dev/null
+++ b/e2e/binary/bc/fixture.txt
@@ -0,0 +1 @@
+5 + 10