Fix use when passed a latest

Author: Zordrak

libexec/tfenv-resolve-version

@@ -118,6 +118,11 @@ if [[ "${version_requested}" =~ ^min-required$ ]]; then
   min_required="$(tfenv-min-required)" \
     || log 'error' 'tfenv-min-required failed';
 
+  if [ -z "${min_required}" ]; then
+    log 'debug' 'It was not possible to detect a minimum-required version. Do you have a required_version line present?';
+    exit;
+  fi;
+
   log 'debug' "Minimum required version detected: ${min_required}";
   version_requested="${min_required}";
 fi;

libexec/tfenv-use

@@ -89,6 +89,8 @@ fi;
 
 log debug "Resolving version with: tfenv-resolve-version ${requested_arg}";
 declare resolved="$(tfenv-resolve-version ${requested_arg})";
+[ -z "${resolved}" ] && log 'error' "Failure to resolve version from ${requested_arg}";
+
 log debug "Resolved to: ${resolved}";
 
 declare version="${resolved%%\:*}";
@@ -111,7 +113,11 @@ if [ -n "${installed_version}" ]; then
 else
   if [ "${auto_install}" == 'true' ]; then
     log 'info' "No installed versions of terraform matched '${resolved}'. Trying to install a matching version since TFENV_AUTO_INSTALL=true";
-    tfenv-install "${resolved}" || log 'error' 'Installing a matching version failed';
+
+    declare install_version='';
+    [ "${version}" == 'latest' ] && install_version="${version}:${regex}" || install_version="${version}";
+
+    tfenv-install "${install_version}" || log 'error' 'Installing a matching version failed';
 
     installed_version="$(\find "${TFENV_CONFIG_DIR}/versions/" -type d -exec basename {} \; \
       | tail -n +2 \

test/test_install_and_use.sh

@@ -196,14 +196,24 @@ if [ -f "${HOME}/.terraform-version.bup" ]; then
   mv "${HOME}/.terraform-version.bup" "${HOME}/.terraform-version";
 fi;
 
-log 'info' 'Use with no input and TFENV_AUTO_INSTALL:';
+log 'info' '## Use Auto-Install Test 1/2: (No Input)';
 cleanup || log 'error' 'Cleanup failed?!';
 
 (
   tfenv use || exit 1;
   check_default_version "$(tfenv list-remote | grep -e "^[0-9]\+\.[0-9]\+\.[0-9]\+$" | head -n 1)" || exit 1;
-) && log info '## Use (No Input) Test 1/1: succeeded' \
-  || error_and_proceed '## Use (No Input) Test 1/1: failed';
+) && log info '## Use Auto-Install Test 1/2: (No Input) succeeded' \
+  || error_and_proceed '## Use Auto-Install Test 1/2: (No Input) failed';
+
+log 'info' '## Use Auto-Install Test 2/2: (Specific version)';
+cleanup || log 'error' 'Cleanup failed?!';
+
+(
+  tfenv use 1.0.1 || exit 1;
+  check_default_version 1.0.1 || exit 1;
+) && log info '## Use Auto-Install Test 2/2: (Specific version) succeeded' \
+  || error_and_proceed '## Use Auto-Install Test 2/2: (Specific version) failed';
+
 
 log 'info' 'Install invalid specific version';
 cleanup || log 'error' 'Cleanup failed?!';