Update tests and add more test cases

Update the existing tests based on new behavior/output format.
Add additional tests to cover scenarios that were not previously tested.

Author: samdoran

test/virtualenvs.bats

@@ -10,57 +10,131 @@ setup() {
   ln -s "${PYENV_ROOT}/versions/3.3.3/envs/venv33" "${PYENV_ROOT}/versions/venv33"
 }
 
-@test "list virtual environments only" {
+@test "list virtual environments" {
   stub pyenv-version-name ": echo system"
-  stub pyenv-virtualenv-prefix "2.7.6 : false"
-  stub pyenv-virtualenv-prefix "3.3.3 : false"
-  stub pyenv-virtualenv-prefix "venv27 : echo \"${PYENV_ROOT}/versions/2.7.6\""
-  stub pyenv-virtualenv-prefix "venv33 : echo \"${PYENV_ROOT}/versions/3.3.3\""
+  stub pyenv-version-origin ""
 
   run pyenv-virtualenvs
 
   assert_success
   assert_output <<OUT
   2.7.6/envs/venv27
   3.3.3/envs/venv33
+  venv27 --> ${PYENV_ROOT}/versions/2.7.6/envs/venv27
+  venv33 --> ${PYENV_ROOT}/versions/3.3.3/envs/venv33
 OUT
 
-  # unstub pyenv-version-name
-  # unstub pyenv-virtualenv-prefix
+  unstub pyenv-version-name
 }
 
 @test "list virtual environments with hit prefix" {
-  stub pyenv-version-name ": echo venv33"
-  stub pyenv-virtualenv-prefix "2.7.6 : false"
-  stub pyenv-virtualenv-prefix "3.3.3 : false"
-  stub pyenv-virtualenv-prefix "venv27 : echo \"${PYENV_ROOT}/versions/2.7.6\""
-  stub pyenv-virtualenv-prefix "venv33 : echo \"${PYENV_ROOT}/versions/3.3.3\""
+  stub pyenv-version-name ": echo 3.3.3/envs/venv33"
+  stub pyenv-version-origin ": echo PYENV_VERSION"
 
   run pyenv-virtualenvs
 
   assert_success
   assert_output <<OUT
   2.7.6/envs/venv27
-* 3.3.3/envs/venv33
+* 3.3.3/envs/venv33 (set by PYENV_VERSION)
+  venv27 --> ${PYENV_ROOT}/versions/2.7.6/envs/venv27
+  venv33 --> ${PYENV_ROOT}/versions/3.3.3/envs/venv33
 OUT
 
-  # unstub pyenv-version-name
-  # unstub pyenv-virtualenv-prefix
+  unstub pyenv-version-name
+  unstub pyenv-version-origin
 }
 
-@test "list virtual environments with --bare" {
+@test "list bare virtual environments" {
   stub pyenv-virtualenv-prefix "2.7.6 : false"
   stub pyenv-virtualenv-prefix "3.3.3 : false"
   stub pyenv-virtualenv-prefix "venv27 : echo \"${PYENV_ROOT}/versions/2.7.6\""
   stub pyenv-virtualenv-prefix "venv33 : echo \"${PYENV_ROOT}/versions/3.3.3\""
 
-  run pyenv-virtualenvs --bare --only-aliases
+  run pyenv-virtualenvs --bare
 
   assert_success
   assert_output <<OUT
+2.7.6/envs/venv27
+3.3.3/envs/venv33
 venv27
 venv33
 OUT
+}
+
+@test "list bare virtual environments without aliases" {
+  run pyenv-virtualenvs --bare --skip-aliases
+
+  assert_success
+  assert_output <<OUT
+2.7.6/envs/venv27
+3.3.3/envs/venv33
+OUT
+}
+
+@test "list virtual environments without aliases" {
+  stub pyenv-version-name ": echo system"
+  stub pyenv-version-origin ""
+
+  run pyenv-virtualenvs --skip-aliases
+
+  assert_success
+  assert_output <<OUT
+  2.7.6/envs/venv27
+  3.3.3/envs/venv33
+OUT
+
+  unstub pyenv-version-name
+}
+
+@test "hit prefix matches alias version name" {
+  stub pyenv-version-name ": echo venv27"
+  stub pyenv-version-origin ": echo PYENV_VERSION"
 
-  unstub pyenv-virtualenv-prefix
+  run pyenv-virtualenvs
+
+  assert_success
+  assert_output <<OUT
+  2.7.6/envs/venv27
+  3.3.3/envs/venv33
+* venv27 --> ${PYENV_ROOT}/versions/2.7.6/envs/venv27 (set by PYENV_VERSION)
+  venv33 --> ${PYENV_ROOT}/versions/3.3.3/envs/venv33
+OUT
+
+  unstub pyenv-version-name
+  unstub pyenv-version-origin
+}
+
+@test "no virtualenvs warning" {
+  rm -rf "${PYENV_ROOT}/versions"
+  mkdir -p "${PYENV_ROOT}/versions"
+  stub pyenv-version-name ": echo system"
+  stub pyenv-version-origin ""
+
+  run pyenv-virtualenvs
+
+  assert_failure
+  assert_output "Warning: no Python virtualenv detected on the system"
+
+  unstub pyenv-version-name
+}
+
+@test "no warning with --bare and no virtualenvs" {
+  rm -rf "${PYENV_ROOT}/versions"
+  mkdir -p "${PYENV_ROOT}/versions"
+
+  run pyenv-virtualenvs --bare
+
+  assert_success
+  assert_output ""
+}
+
+@test "completions output" {
+  run pyenv-virtualenvs --complete
+
+  assert_success
+  assert_output <<OUT
+--bare
+--skip-aliases
+OUT
 }