From 05a7446619244278ab060d4fa272f7406e1d874b Mon Sep 17 00:00:00 2001
From: DustinChaloupka <dustin.chaloupka@banno.com>
Date: Tue, 10 Oct 2017 12:02:42 -0500
Subject: [PATCH] Add installing from a parent directory's .tool-versions

---
 lib/commands/install.sh   |  8 ++++----
 lib/utils.sh              | 11 +++++++++++
 test/install_command.bats | 16 ++++++++++++++++
 test/utils.bats           | 19 +++++++++++++++++++
 4 files changed, 50 insertions(+), 4 deletions(-)

diff --git a/lib/commands/install.sh b/lib/commands/install.sh
index 9ea36f66..a7e5ccd0 100644
--- a/lib/commands/install.sh
+++ b/lib/commands/install.sh
@@ -37,10 +37,9 @@ get_concurrency() {
 }
 
 install_local_tool_versions() {
-  if [ -f "$(pwd)/.tool-versions" ]; then
-    local asdf_versions_path
-    asdf_versions_path="$(pwd)/.tool-versions"
-
+  local asdf_versions_path
+  asdf_versions_path=$(find_tool_versions)
+  if [ -f "${asdf_versions_path}" ]; then
     while read -r tool_line; do
       IFS=' ' read -r -a tool_info <<< "$tool_line"
       local tool_name
@@ -55,6 +54,7 @@ install_local_tool_versions() {
   else
     echo "Either specify a tool & version in the command"
     echo "OR add .tool-versions file in this directory"
+    echo "or in a parent directory"
     exit 1
   fi
 }
diff --git a/lib/utils.sh b/lib/utils.sh
index 55f99789..7a89f909 100644
--- a/lib/utils.sh
+++ b/lib/utils.sh
@@ -323,3 +323,14 @@ get_plugin_source_url() {
     grep "repository" "$plugin_config" | awk -F'=' '{print $2}' | sed 's/ //'
   fi
 }
+
+find_tool_versions() {
+    local search_path=$(pwd)
+    while [ "$search_path" != "/" ]; do
+        if [ -f "$search_path/.tool-versions" ]; then
+            echo "${search_path}/.tool-versions"
+            return 0
+        fi
+        search_path=$(dirname "$search_path")
+    done
+}
diff --git a/test/install_command.bats b/test/install_command.bats
index 7d41ff4e..942db233 100644
--- a/test/install_command.bats
+++ b/test/install_command.bats
@@ -97,3 +97,19 @@ teardown() {
   [ "$output" = "You must specify a name and a version to install" ]
   [ ! -f $ASDF_DIR/installs/dummy/1.1/version ]
 }
+
+@test "install_command uses a parent directory .tool-versions file if present" {
+  # asdf lib needed to run generated shims
+  cp -rf $BATS_TEST_DIRNAME/../{bin,lib} $ASDF_DIR/
+
+  echo 'dummy 1.0' > $PROJECT_DIR/.tool-versions
+  mkdir -p $PROJECT_DIR/child
+
+  cd $PROJECT_DIR/child
+
+  run install_command
+
+  # execute the generated shim
+  [ "$($ASDF_DIR/shims/dummy world hello)" == "This is Dummy 1.0! hello world" ]
+  [ "$status" -eq 0 ]
+}
diff --git a/test/utils.bats b/test/utils.bats
index c1e2dba9..77dd82d6 100644
--- a/test/utils.bats
+++ b/test/utils.bats
@@ -207,3 +207,22 @@ teardown() {
   [ "$status" -eq 0 ]
   [ "$output" = "$executable_path" ]
 }
+
+@test "find_tool_versions will find a .tool-versions path if it exists in current directory" {
+  echo "dummy 0.1.0" > $PROJECT_DIR/.tool-versions
+  cd $PROJECT_DIR
+
+  run find_tool_versions
+  [ "$status" -eq 0 ]
+  [ "$output" = "$PROJECT_DIR/.tool-versions" ]
+}
+
+@test "find_tool_versions will find a .tool-versions path if it exists in parent directory" {
+  echo "dummy 0.1.0" > $PROJECT_DIR/.tool-versions
+  mkdir -p $PROJECT_DIR/child
+  cd $PROJECT_DIR/child
+
+  run find_tool_versions
+  [ "$status" -eq 0 ]
+  [ "$output" = "$PROJECT_DIR/.tool-versions" ]
+}