Move tests to pytest

README.rst

@@ -49,8 +49,28 @@ Tests
 -----
 
 There's a simple but comprehensive test scenario using
-`BATS <https://github.com/sstephenson/bats>`.  Run the
+`pytest <https://pypi.org/p/pytest>`_ and
-file in the `tests` directory to run it.
+`pytest-order <https://pypi.org/p/pytest-order>`.
+
+Install::
+
+  $ python3 -m venv .venv
+  $ . .venv/bin/activate
+  (.venv)$ pip install -e .
+  (.venv)$ pip install -r tests/test_requirements.txt
+
+Run::
+
+  (.venv)$ pytest -x
+  ==================== test session starts ====================
+  platform darwin -- Python 3.10.12, pytest-7.4.0, pluggy-1.2.0
+  rootdir: /Users/ambv/Documents/Python/bitrot
+  plugins: order-1.1.0
+  collected 12 items
+
+  tests/test_bitrot.py ............                      [100%]
+
+  ==================== 12 passed in 15.05s ====================
 
 Change Log
 ----------

tests/test-bitrot.bats

@@ -1,212 +0,0 @@
-#!/usr/bin/env bats
-
-LC_ALL=en_US.UTF-8
-LANG=en_US.UTF-8
-
-cmd='python -m bitrot'
-test_dir=/tmp/bitrot_dir-$USER
-mkdir -p $test_dir
-cd $test_dir || exit
-
-@test "bitrot command exists" {
-    run $cmd --help
-
-    [ "$status" -eq 0 ]
-}
-
-@test "bitrot detects new files in a tree dir" {
-    mkdir -p nonemptydirs/dir2/
-    touch nonemptydirs/dir2/new-file-{a,b}.txt
-    echo $RANDOM >> nonemptydirs/dir2/new-file-b.txt
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    # [[ ${lines[0]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[1]}   = "2 entries in the database. 2 entries new:" ]]
-    [[ ${lines[2]}   = "  ./nonemptydirs/dir2/new-file-a.txt" ]]
-    [[ ${lines[3]}   = "  ./nonemptydirs/dir2/new-file-b.txt" ]]
-    [[ ${lines[4]}   = "Updating bitrot.sha512... done." ]]
-}
-
-@test "bitrot detects modified files in a tree dir" {
-    sleep 2
-    echo $RANDOM >> nonemptydirs/dir2/new-file-a.txt
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    [[ ${lines[0]}   = "Checking bitrot.db integrity... ok." ]]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "2 entries in the database. 1 entries updated:" ]]
-    [[ ${lines[3]}   = "  ./nonemptydirs/dir2/new-file-a.txt" ]]
-    [[ ${lines[4]}   = "Updating bitrot.sha512... done." ]]
-}
-
-@test "bitrot detects renamed files in a tree dir" {
-    sleep 1
-    mv nonemptydirs/dir2/new-file-a.txt nonemptydirs/dir2/new-file-a.txt2
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    [[ ${lines[0]}   = "Checking bitrot.db integrity... ok." ]]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "2 entries in the database. 1 entries renamed:" ]]
-    [[ ${lines[3]}   = " from ./nonemptydirs/dir2/new-file-a.txt to ./nonemptydirs/dir2/new-file-a.txt2" ]]
-    [[ ${lines[4]}   = "Updating bitrot.sha512... done." ]]
-}
-
-@test "bitrot detects delete files in a tree dir" {
-    sleep 1
-    rm  nonemptydirs/dir2/new-file-a.txt2
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    [[ ${lines[0]}   = "Checking bitrot.db integrity... ok." ]]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "1 entries in the database. 1 entries missing:" ]]
-    [[ ${lines[3]}   = "  ./nonemptydirs/dir2/new-file-a.txt2" ]]
-    [[ ${lines[4]}   = "Updating bitrot.sha512... done." ]]
-}
-
-
-@test "bitrot detects new files and modified in a tree dir " {
-    sleep 1
-    touch more-files-{a,b,c,d,e,f,g}.txt
-    echo $RANDOM >> nonemptydirs/dir2/new-file-b.txt
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "8 entries in the database. 7 entries new:" ]]
-    [[ ${lines[3]}   = "  ./more-files-a.txt" ]]
-    [[ ${lines[4]}   = "  ./more-files-b.txt" ]]
-    [[ ${lines[5]}   = "  ./more-files-c.txt" ]]
-    [[ ${lines[6]}   = "  ./more-files-d.txt" ]]
-    [[ ${lines[7]}   = "  ./more-files-e.txt" ]]
-    [[ ${lines[8]}   = "  ./more-files-f.txt" ]]
-    [[ ${lines[9]}   = "  ./more-files-g.txt" ]]
-    [[ ${lines[10]}  = "1 entries updated:" ]]
-    [[ ${lines[11]}  = "  ./nonemptydirs/dir2/new-file-b.txt" ]]
-    [[ ${lines[12]}  = "Updating bitrot.sha512... done." ]]
-}
-
-@test "bitrot detects new files, modified, deleted and moved in a tree dir " {
-    sleep 1
-    for fil in {a,b,c,d,e,f,g}; do
-        echo  $RANDOM >> nonemptydirs/pl-more-files-$fil.txt
-    done
-    echo $RANDOM >> nonemptydirs/dir2/new-file-b.txt
-    mv more-files-a.txt more-files-a.txt2
-    rm more-files-g.txt
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "14 entries in the database. 7 entries new:" ]]
-    [[ ${lines[3]}   = "  ./nonemptydirs/pl-more-files-a.txt" ]]
-    [[ ${lines[4]}   = "  ./nonemptydirs/pl-more-files-b.txt" ]]
-    [[ ${lines[5]}   = "  ./nonemptydirs/pl-more-files-c.txt" ]]
-    [[ ${lines[6]}   = "  ./nonemptydirs/pl-more-files-d.txt" ]]
-    [[ ${lines[7]}   = "  ./nonemptydirs/pl-more-files-e.txt" ]]
-    [[ ${lines[8]}   = "  ./nonemptydirs/pl-more-files-f.txt" ]]
-    [[ ${lines[9]}   = "  ./nonemptydirs/pl-more-files-g.txt" ]]
-    [[ ${lines[10]}  = "1 entries updated:" ]]
-    [[ ${lines[11]}  = "  ./nonemptydirs/dir2/new-file-b.txt" ]]
-    [[ ${lines[12]}  = "1 entries renamed:" ]]
-    [[ ${lines[13]}  = " from ./more-files-a.txt to ./more-files-a.txt2" ]]
-    [[ ${lines[14]}  = "1 entries missing:" ]]
-    [[ ${lines[15]}  = "  ./more-files-g.txt" ]]
-    [[ ${lines[16]}  = "Updating bitrot.sha512... done." ]]
-}
-
-
-@test "bitrot detects new files, modified, deleted and moved in a tree dir 2" {
-    sleep 1
-    for fil in {a,b,c,d,e,f,g}; do
-        echo  $RANDOM >> nonemptydirs/pl2-more-files-$fil.txt
-    done
-    echo  $RANDOM >> nonemptydirs/pl-more-files-a.txt
-    mv nonemptydirs/pl-more-files-b.txt  nonemptydirs/pl-more-files-b.txt2
-    cp nonemptydirs/pl-more-files-g.txt  nonemptydirs/pl2-more-files-g.txt2
-    cp nonemptydirs/pl-more-files-d.txt  nonemptydirs/pl2-more-files-d.txt2
-    rm more-files-f.txt nonemptydirs/pl-more-files-c.txt
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "21 entries in the database. 9 entries new:" ]]
-    [[ ${lines[3]}   = "  ./nonemptydirs/pl2-more-files-a.txt" ]]
-    [[ ${lines[4]}   = "  ./nonemptydirs/pl2-more-files-b.txt" ]]
-    [[ ${lines[5]}   = "  ./nonemptydirs/pl2-more-files-c.txt" ]]
-    [[ ${lines[6]}   = "  ./nonemptydirs/pl2-more-files-d.txt" ]]
-    [[ ${lines[7]}   = "  ./nonemptydirs/pl2-more-files-d.txt2" ]]
-    [[ ${lines[8]}   = "  ./nonemptydirs/pl2-more-files-e.txt" ]]
-    [[ ${lines[9]}   = "  ./nonemptydirs/pl2-more-files-f.txt" ]]
-    [[ ${lines[10]}  = "  ./nonemptydirs/pl2-more-files-g.txt" ]]
-    [[ ${lines[11]}  = "  ./nonemptydirs/pl2-more-files-g.txt2" ]]
-    [[ ${lines[12]}  = "1 entries updated:" ]]
-    [[ ${lines[13]}  = "  ./nonemptydirs/pl-more-files-a.txt" ]]
-    [[ ${lines[14]}  = "1 entries renamed:" ]]
-    [[ ${lines[15]}  = " from ./nonemptydirs/pl-more-files-b.txt to ./nonemptydirs/pl-more-files-b.txt2" ]]
-    [[ ${lines[16]}  = "2 entries missing:" ]]
-    [[ ${lines[17]}  = "  ./more-files-f.txt" ]]
-    [[ ${lines[18]}  = "  ./nonemptydirs/pl-more-files-c.txt" ]]
-    [[ ${lines[19]}  = "Updating bitrot.sha512... done." ]]
-}
-
-
-@test "bitrot can operate with 3278 files easily in a dir (1)" {
-    sleep 1
-    mkdir -p alotfiles/here; cd alotfiles/here
-    # create a 320KB file
-    dd if=/dev/urandom of=masterfile bs=1 count=327680
-    # split it in 3277 files (instantly) + masterfile = 3278
-    split -b 100 -a 10 masterfile
-    cd $test_dir
-    run $cmd
-
-    [ "$status" -eq 0 ]
-    [[ ${lines[2]} = "3299 entries in the database, 3278 new, 0 updated, 0 renamed, 0 missing." ]]
-}
-
-@test "bitrot can operate with 3278 files easily in a dir (2)" {
-    sleep 1
-    mv alotfiles/here alotfiles/here-moved
-    run $cmd
-
-    [ "$status" -eq 0 ]
-    [[ ${lines[2]}   = "3299 entries in the database, 0 new, 0 updated, 3278 renamed, 0 missing." ]]
-}
-
-@test "bitrot can detect rotten bits in a dir (1)" {
-    sleep 1
-    touch non-rotten-file
-    dd if=/dev/zero of=rotten-file bs=1k count=1000 &>/dev/null
-    # let's make sure they share the same timestamp
-    touch -r non-rotten-file rotten-file
-    run $cmd -v
-
-    [ "$status" -eq 0 ]
-    [[ ${lines[0]}   = "Checking bitrot.db integrity... ok." ]]
-    # [[ ${lines[1]}   = "Finished. 0.00 MiB of data read. 0 errors found." ]]
-    [[ ${lines[2]}   = "3301 entries in the database, 2 entries new:" ]]
-    [[ ${lines[3]}   = "  ./non-rotten-file" ]]
-    [[ ${lines[4]}   = "  ./rotten-file" ]]
-}
-
-@test "bitrot can detect rotten bits in a dir (2)" {
-    sleep 1
-    # modify the rotten file...
-    dd if=/dev/urandom of=rotten-file bs=1k count=10 seek=1k conv=notrunc &>/dev/null
-    # ...but revert the modification date
-    touch -r non-rotten-file rotten-file
-    run $cmd -q
-
-    [ "$status" -eq 1 ]
-    [[ ${lines[0]} = *"error: SHA1 mismatch for ./rotten-file: expected"* ]]
-    [[ ${lines[1]} = "error: There were 1 errors found." ]]
-}
-
-@test "Clean everything" {
-    run chmod -Rf a+w $test_dir
-    run rm -rf $test_dir
-}

tests/test_bitrot.py

@@ -0,0 +1,337 @@
+"""
+NOTE: those tests are ordered and require pytest-order to run correctly.
+"""
+
+import getpass
+import os
+from pathlib import Path
+import shlex
+import shutil
+import subprocess
+import sys
+from textwrap import dedent
+
+import pytest
+
+
+TMP = Path("/tmp/")
+
+
+ReturnCode = int
+StdOut = list[str]
+StdErr = list[str]
+
+
+def bitrot(*args: str) -> tuple[ReturnCode, StdOut, StdErr]:
+    cmd = [sys.executable, "-m", "bitrot"]
+    cmd.extend(args)
+    res = subprocess.run(shlex.join(cmd), shell=True, capture_output=True)
+    stdout = (res.stdout or b"").decode("utf8")
+    stderr = (res.stderr or b"").decode("utf8")
+    return res.returncode, lines(stdout), lines(stderr)
+
+
+def bash(script, empty_dir: bool = False) -> bool:
+    username = getpass.getuser()
+    test_dir = TMP / f"bitrot-dir-{username}"
+    if empty_dir and test_dir.is_dir():
+        os.chdir(TMP)
+        shutil.rmtree(test_dir)
+    test_dir.mkdir(exist_ok=True)
+    os.chdir(test_dir)
+
+    preamble = """
+        set -euxo pipefail
+        LC_ALL=en_US.UTF-8
+        LANG=en_US.UTF-8
+        """
+
+    if script:
+        # We need to wait a second for modification timestamps to differ so that
+        # the ordering of the output stays the same every run of the tests.
+        preamble += """
+        sleep 1
+        """
+
+    script_path = TMP / "bitrot-test.bash"
+    script_path.write_text(dedent(preamble + script))
+    script_path.chmod(0o755)
+
+    out = subprocess.run(["bash", str(script_path)], capture_output=True)
+    if out.returncode:
+        print(f"Non-zero return code {out.returncode} when running {script_path}")
+        if out.stdout:
+            print(out.stdout)
+        if out.stderr:
+            print(out.stderr)
+        return False
+    return True
+
+
+def lines(s: str) -> list[str]:
+    r"""Only return non-empty lines that weren't killed by \r."""
+    return [
+        line.rstrip()
+        for line in s.splitlines(keepends=True)
+        if line and line.rstrip() and line[-1] != "\r"
+    ]
+
+
+@pytest.mark.order(1)
+def test_command_exists() -> None:
+    rc, out, err = bitrot("--help")
+    assert rc == 0
+    assert not err
+    assert out[0].startswith("usage:")
+
+    assert bash("", empty_dir=True)
+
+
+@pytest.mark.order(2)
+def test_new_files_in_a_tree_dir() -> None:
+    assert bash(
+        """
+        mkdir -p nonemptydirs/dir2/
+        touch nonemptydirs/dir2/new-file-{a,b}.txt
+        echo $RANDOM >> nonemptydirs/dir2/new-file-b.txt
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    # assert out[0] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[1] == "2 entries in the database. 2 entries new:"
+    assert out[2] == "  ./nonemptydirs/dir2/new-file-a.txt"
+    assert out[3] == "  ./nonemptydirs/dir2/new-file-b.txt"
+    assert out[4] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(3)
+def test_modified_files_in_a_tree_dir() -> None:
+    assert bash(
+        """
+        echo $RANDOM >> nonemptydirs/dir2/new-file-a.txt
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "2 entries in the database. 1 entries updated:"
+    assert out[3] == "  ./nonemptydirs/dir2/new-file-a.txt"
+    assert out[4] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(4)
+def test_renamed_files_in_a_tree_dir() -> None:
+    assert bash(
+        """
+        mv nonemptydirs/dir2/new-file-a.txt nonemptydirs/dir2/new-file-a.txt2
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "2 entries in the database. 1 entries renamed:"
+    o3 = " from ./nonemptydirs/dir2/new-file-a.txt to ./nonemptydirs/dir2/new-file-a.txt2"
+    assert out[3] == o3
+    assert out[4] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(5)
+def test_deleted_files_in_a_tree_dir() -> None:
+    assert bash(
+        """
+        rm  nonemptydirs/dir2/new-file-a.txt2
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "1 entries in the database. 1 entries missing:"
+    assert out[3] == "  ./nonemptydirs/dir2/new-file-a.txt2"
+    assert out[4] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(5)
+def test_new_files_and_modified_files_in_a_tree_dir() -> None:
+    assert bash(
+        """
+        for fil in {a,b,c,d,e,f,g}; do
+            echo $fil >> more-files-$fil.txt
+        done
+        echo $RANDOM >> nonemptydirs/dir2/new-file-b.txt
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "8 entries in the database. 7 entries new:"
+    assert out[3] == "  ./more-files-a.txt"
+    assert out[4] == "  ./more-files-b.txt"
+    assert out[5] == "  ./more-files-c.txt"
+    assert out[6] == "  ./more-files-d.txt"
+    assert out[7] == "  ./more-files-e.txt"
+    assert out[8] == "  ./more-files-f.txt"
+    assert out[9] == "  ./more-files-g.txt"
+    assert out[10] == "1 entries updated:"
+    assert out[11] == "  ./nonemptydirs/dir2/new-file-b.txt"
+    assert out[12] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(6)
+def test_new_files_modified_deleted_and_moved_in_a_tree_dir() -> None:
+    assert bash(
+        """
+        for fil in {a,b,c,d,e,f,g}; do
+            echo $fil $RANDOM >> nonemptydirs/pl-more-files-$fil.txt
+        done
+        echo $RANDOM >> nonemptydirs/dir2/new-file-b.txt
+        mv more-files-a.txt more-files-a.txt2
+        rm more-files-g.txt
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "14 entries in the database. 7 entries new:"
+    assert out[3] == "  ./nonemptydirs/pl-more-files-a.txt"
+    assert out[4] == "  ./nonemptydirs/pl-more-files-b.txt"
+    assert out[5] == "  ./nonemptydirs/pl-more-files-c.txt"
+    assert out[6] == "  ./nonemptydirs/pl-more-files-d.txt"
+    assert out[7] == "  ./nonemptydirs/pl-more-files-e.txt"
+    assert out[8] == "  ./nonemptydirs/pl-more-files-f.txt"
+    assert out[9] == "  ./nonemptydirs/pl-more-files-g.txt"
+    assert out[10] == "1 entries updated:"
+    assert out[11] == "  ./nonemptydirs/dir2/new-file-b.txt"
+    assert out[12] == "1 entries renamed:"
+    assert out[13] == " from ./more-files-a.txt to ./more-files-a.txt2"
+    assert out[14] == "1 entries missing:"
+    assert out[15] == "  ./more-files-g.txt"
+    assert out[16] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(7)
+def test_new_files_modified_deleted_and_moved_in_a_tree_dir_2() -> None:
+    assert bash(
+        """
+        for fil in {a,b,c,d,e,f,g}; do
+            echo  $RANDOM >> nonemptydirs/pl2-more-files-$fil.txt
+        done
+        echo  $RANDOM >> nonemptydirs/pl-more-files-a.txt
+        mv nonemptydirs/pl-more-files-b.txt  nonemptydirs/pl-more-files-b.txt2
+        cp nonemptydirs/pl-more-files-g.txt  nonemptydirs/pl2-more-files-g.txt2
+        cp nonemptydirs/pl-more-files-d.txt  nonemptydirs/pl2-more-files-d.txt2
+        rm more-files-f.txt nonemptydirs/pl-more-files-c.txt
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "21 entries in the database. 9 entries new:"
+    assert out[3] == "  ./nonemptydirs/pl2-more-files-a.txt"
+    assert out[4] == "  ./nonemptydirs/pl2-more-files-b.txt"
+    assert out[5] == "  ./nonemptydirs/pl2-more-files-c.txt"
+    assert out[6] == "  ./nonemptydirs/pl2-more-files-d.txt"
+    assert out[7] == "  ./nonemptydirs/pl2-more-files-d.txt2"
+    assert out[8] == "  ./nonemptydirs/pl2-more-files-e.txt"
+    assert out[9] == "  ./nonemptydirs/pl2-more-files-f.txt"
+    assert out[10] == "  ./nonemptydirs/pl2-more-files-g.txt"
+    assert out[11] == "  ./nonemptydirs/pl2-more-files-g.txt2"
+    assert out[12] == "1 entries updated:"
+    assert out[13] == "  ./nonemptydirs/pl-more-files-a.txt"
+    assert out[14] == "1 entries renamed:"
+    o15 = " from ./nonemptydirs/pl-more-files-b.txt to ./nonemptydirs/pl-more-files-b.txt2"
+    assert out[15] == o15
+    assert out[16] == "2 entries missing:"
+    assert out[17] == "  ./more-files-f.txt"
+    assert out[18] == "  ./nonemptydirs/pl-more-files-c.txt"
+    assert out[19] == "Updating bitrot.sha512... done."
+
+
+@pytest.mark.order(8)
+def test_3278_files() -> None:
+    assert bash(
+        """
+        mkdir -p alotfiles/here; cd alotfiles/here
+        # create a 320KB file
+        dd if=/dev/urandom of=masterfile bs=1 count=327680
+        # split it in 3277 files (instantly) + masterfile = 3278
+        split -b 100 -a 10 masterfile
+        """
+    )
+    rc, out, err = bitrot()
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    o2 = "3299 entries in the database, 3278 new, 0 updated, 0 renamed, 0 missing."
+    assert out[2] == o2
+
+
+@pytest.mark.order(9)
+def test_3278_files_2() -> None:
+    assert bash(
+        """
+        mv alotfiles/here alotfiles/here-moved
+        """
+    )
+    rc, out, err = bitrot()
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    o2 = "3299 entries in the database, 0 new, 0 updated, 3278 renamed, 0 missing."
+    assert out[2] == o2
+
+
+@pytest.mark.order(10)
+def test_rotten_file() -> None:
+    assert bash(
+        """
+        touch non-rotten-file
+        dd if=/dev/zero of=rotten-file bs=1k count=1000 &>/dev/null
+        # let's make sure they share the same timestamp
+        touch -r non-rotten-file rotten-file
+        """
+    )
+    rc, out, err = bitrot("-v")
+    assert rc == 0
+    assert not err
+    assert out[0] == "Checking bitrot.db integrity... ok."
+    # assert out[1] == "Finished. 0.00 MiB of data read. 0 errors found."
+    assert out[2] == "3301 entries in the database. 2 entries new:"
+    assert out[3] == "  ./non-rotten-file"
+    assert out[4] == "  ./rotten-file"
+
+
+@pytest.mark.order(11)
+def test_rotten_file_2() -> None:
+    assert bash(
+        """
+        # modify the rotten file...
+        dd if=/dev/urandom of=rotten-file bs=1k count=10 seek=1k conv=notrunc &>/dev/null
+        # ...but revert the modification date
+        touch -r non-rotten-file rotten-file
+        """
+    )
+    rc, out, err = bitrot("-q")
+    assert rc == 1
+    assert not out
+    e = (
+        "error: SHA1 mismatch for ./rotten-file: expected"
+        " 8fee1653e234fee8513245d3cb3e3c06d071493e, got"
+    )
+    assert err[0].startswith(e)
+    assert err[1] == "error: There were 1 errors found."

tests/test_requirements.txt

@@ -0,0 +1,2 @@
+pytest
+pytest-order