new: Fix load environment path for --test

Previously tests created at the top-level of `_GO_TEST_DIR` would
contain the line `load ../environment` when it should've been `load
environment`.

Also updates a misnamed test case in the same file.

Author: mbland

libexec/new

@@ -226,7 +226,9 @@ _@go.new_test() {
   local parent_dir="${test_relpath%/*}"
   local impl
 
-  if [[ -n "$parent_dir" ]]; then
+  if [[ "$parent_dir" == "${test_path##*/}" ]]; then
+    parent_dir=''
+  else
     parent_dir="${parent_dir//[^\/]}/"
   fi
 

tests/new.bats

@@ -431,7 +431,14 @@ assert_command_script_is_executable() {
     $'\n@test "\$SUITE: short description of your first test case" \{\n'
 }
 
-@test "$SUITE: --test fails if public module already exists" {
+@test "$SUITE: no '../' in environment load path for top-level test" {
+  run "$TEST_GO_SCRIPT" new --test foo
+  assert_success "EDITING: $TEST_GO_ROOTDIR/$_GO_TEST_DIR/foo.bats"
+  assert_file_matches "$TEST_GO_ROOTDIR/$_GO_TEST_DIR/foo.bats" \
+    $'\nload environment\n'
+}
+
+@test "$SUITE: --test fails if test already exists" {
   run "$TEST_GO_SCRIPT" new --test foo/bar/baz
   assert_success "EDITING: $TEST_GO_ROOTDIR/$_GO_TEST_DIR/foo/bar/baz.bats"
   run "$TEST_GO_SCRIPT" new --test foo/bar/baz