Add hooks for plugin uninstall

CHANGELOG.md

@@ -17,6 +17,9 @@ Features
     
     pre_foo_bar = echo about to execute command bar from foo with args: ${@}
     post_foo_bar = echo just executed command bar from foo with args: ${@}
+
+    pre_asdf_uninstall_foo = echo will remove foo version ${1}
+    post_asdf_uninstall_foo = echo removed foo version ${1}
     ```
 * New shim version meta-data allows shims to not depend on a particular plugin
   nor on its relative executable path (#431)

lib/commands/uninstall.sh

@@ -23,6 +23,7 @@ uninstall_command() {
     exit 1
   fi
 
+  asdf_run_hook "pre_asdf_uninstall_${plugin_name}" "$full_version"
   remove_shims_for_version "$plugin_name" "$full_version"
 
   if [ -f "${plugin_path}/bin/uninstall" ]; then
@@ -35,4 +36,6 @@ uninstall_command() {
   else
     rm -rf "$install_path"
   fi
+
+  asdf_run_hook "post_asdf_uninstall_${plugin_name}" "$full_version"
 }

test/uninstall_command.bats

@@ -86,3 +86,24 @@ teardown() {
   run uninstall_command dummy 1.0
   [ -f $ASDF_DIR/shims/gummy ]
 }
+
+@test "uninstall command executes configured pre hook" {
+  cat > $HOME/.asdfrc <<-'EOM'
+pre_asdf_uninstall_dummy = echo will uninstall dummy $1
+EOM
+
+  run install_command dummy 1.0
+  run uninstall_command dummy 1.0
+  [ "$output" == "will uninstall dummy 1.0" ]
+}
+
+@test "uninstall command executes configured post hook" {
+  cat > $HOME/.asdfrc <<-'EOM'
+post_asdf_uninstall_dummy = echo removed dummy $1
+EOM
+
+  run install_command dummy 1.0
+  run uninstall_command dummy 1.0
+  echo $output
+  [ "$output" == "removed dummy 1.0" ]
+}