Add asdf shim-versions command (#380)

For example `asdf shim-versions npm` will list the plugins and their
versions on which the `npm` command is available.

Based on #432

CHANGELOG.md

@@ -16,6 +16,8 @@ Features
   slower `get_preset_version_for` which takes legacy formats into account.
 * Shim exec recommends which plugins or versions to set when command is not found.
 * `asdf reshim` without arguments now reshims all installed plugins (#407)
+* Add `asdf shim-versions <executable>` to list on which plugins and versions is a command
+  available. (#380)
 
 Fixed Bugs
 

bin/asdf

@@ -17,6 +17,8 @@ source "$(dirname "$(dirname "$0")")/lib/commands/current.sh"
 source "$(dirname "$(dirname "$0")")/lib/commands/where.sh"
 # shellcheck source=lib/commands/which.sh
 source "$(dirname "$(dirname "$0")")/lib/commands/which.sh"
+# shellcheck source=lib/commands/shim_versions.sh
+source "$(dirname "$(dirname "$0")")/lib/commands/shim_versions.sh"
 # shellcheck source=lib/commands/version_commands.sh
 source "$(dirname "$(dirname "$0")")/lib/commands/version_commands.sh"
 # shellcheck source=lib/commands/list.sh
@@ -83,9 +85,6 @@ case $1 in
 "list-all")
     list_all_command $callback_args;;
 
-"shim")
-    shim_command $callback_args;;
-
 "reshim")
     reshim_command $callback_args;;
 
@@ -111,6 +110,8 @@ case $1 in
 "plugin-test")
     plugin_test_command $callback_args;;
 
+"shim-versions")
+    shim_versions_command $callback_args;;
 *)
   help_command
   exit 1;;

help.txt

@@ -17,7 +17,7 @@ MANAGE PACKAGES
   asdf current                         Display current version set or being used for all packages
   asdf current <name>                  Display current version set or being used for package
   asdf where <name> [<version>]        Display install path for an installed or current version
-  asdf which <name>                    Display install path for current version
+  asdf which <executable>              Display the path to an executable
   asdf local <name> <version>          Set the package local version
   asdf global <name> <version>         Set the package global version
   asdf list <name>                     List installed versions of a package
@@ -26,6 +26,7 @@ MANAGE PACKAGES
 
 UTILS
   asdf reshim <name> <version>         Recreate shims for version of a package
+  asdf shim-versions <executable>      List on which plugins and versions is an executable provided.
   asdf update                          Update asdf to the latest stable release
   asdf update --head                   Update asdf to the latest on the master branch
 

lib/commands/shim_versions.sh

@@ -0,0 +1,4 @@
+shim_versions_command() {
+  local shim_name=$1
+  shim_plugin_versions "$shim_name"
+}

test/shim_versions_command.bats

@@ -0,0 +1,33 @@
+#!/usr/bin/env bats
+
+load test_helpers
+
+. $(dirname $BATS_TEST_DIRNAME)/lib/commands/shim_versions.sh
+. $(dirname $BATS_TEST_DIRNAME)/lib/commands/reshim.sh
+. $(dirname $BATS_TEST_DIRNAME)/lib/commands/install.sh
+
+setup() {
+  setup_asdf_dir
+  install_dummy_plugin
+
+  PROJECT_DIR=$HOME/project
+  mkdir -p $PROJECT_DIR
+  cd $PROJECT_DIR
+}
+
+teardown() {
+  clean_asdf_dir
+}
+
+@test "shim_versions_command should list plugins and versions where command is available" {
+  cd $PROJECT_DIR
+  run install_command dummy 3.0
+  run install_command dummy 1.0
+  run reshim_command dummy
+
+  run shim_versions_command dummy
+  [ "$status" -eq 0 ]
+
+  echo "$output" | grep "dummy 3.0"
+  echo "$output" | grep "dummy 1.0"
+}