Import tests from rbenv with sed -e s/rbenv/pyenv/g

test/versions.bats

@@ -0,0 +1,115 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_version() {
+  mkdir -p "${PYENV_ROOT}/versions/$1"
+}
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+stub_system_python() {
+  local stub="${PYENV_TEST_DIR}/bin/python"
+  mkdir -p "$(dirname "$stub")"
+  touch "$stub" && chmod +x "$stub"
+}
+
+@test "no versions installed" {
+  stub_system_python
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-versions
+  assert_success "* system (set by ${PYENV_ROOT}/version)"
+}
+
+@test "bare output no versions installed" {
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-versions --bare
+  assert_success ""
+}
+
+@test "single version installed" {
+  stub_system_python
+  create_version "1.9"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+* system (set by ${PYENV_ROOT}/version)
+  1.9
+OUT
+}
+
+@test "single version bare" {
+  create_version "1.9"
+  run pyenv-versions --bare
+  assert_success "1.9"
+}
+
+@test "multiple versions" {
+  stub_system_python
+  create_version "1.8.7"
+  create_version "1.9.3"
+  create_version "2.0.0"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+* system (set by ${PYENV_ROOT}/version)
+  1.8.7
+  1.9.3
+  2.0.0
+OUT
+}
+
+@test "indicates current version" {
+  stub_system_python
+  create_version "1.9.3"
+  create_version "2.0.0"
+  PYENV_VERSION=1.9.3 run pyenv-versions
+  assert_success
+  assert_output <<OUT
+  system
+* 1.9.3 (set by PYENV_VERSION environment variable)
+  2.0.0
+OUT
+}
+
+@test "bare doesn't indicate current version" {
+  create_version "1.9.3"
+  create_version "2.0.0"
+  PYENV_VERSION=1.9.3 run pyenv-versions --bare
+  assert_success
+  assert_output <<OUT
+1.9.3
+2.0.0
+OUT
+}
+
+@test "globally selected version" {
+  stub_system_python
+  create_version "1.9.3"
+  create_version "2.0.0"
+  cat > "${PYENV_ROOT}/version" <<<"1.9.3"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+  system
+* 1.9.3 (set by ${PYENV_ROOT}/version)
+  2.0.0
+OUT
+}
+
+@test "per-project version" {
+  stub_system_python
+  create_version "1.9.3"
+  create_version "2.0.0"
+  cat > ".python-version" <<<"1.9.3"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+  system
+* 1.9.3 (set by ${PYENV_TEST_DIR}/.python-version)
+  2.0.0
+OUT
+}