#!/usr/bin/env bats

setup() {
  set -euo pipefail

  bats_load_library bats-support
  bats_load_library bats-assert

  DIR="$(cd "$(dirname "$BATS_TEST_FILENAME")" >/dev/null 2>&1 && pwd)"
  PATH="$DIR/../bin:$PATH"
}

@test "keeps hunk when replacement matches" {
  run bash -c 'cat <<"EOF" | mechanicaldiff.py foo bar
diff --git a/file.txt b/file.txt
index 1111111..2222222 100644
--- a/file.txt
+++ b/file.txt
@@ -1,1 +1,1 @@
-foo
+bar
EOF'
  assert_success
  expected="$(
    cat <<'EOF'
diff --git a/file.txt b/file.txt
index 1111111..2222222 100644
--- a/file.txt
+++ b/file.txt
@@ -1,1 +1,1 @@
-foo
+bar
EOF
  )"
  assert_output "$expected"
}

@test "drops diff when replacement does not match" {
  run bash -c 'cat <<"EOF" | mechanicaldiff.py foo bar
diff --git a/file.txt b/file.txt
index 1111111..2222222 100644
--- a/file.txt
+++ b/file.txt
@@ -1,1 +1,1 @@
-foo
+baz
EOF'
  assert_success
  assert_output ""
}