Add 'from json'

crates/nu-path/tests/mod.rs

@@ -0,0 +1 @@
+mod util;

crates/nu-path/tests/util.rs

@@ -0,0 +1,45 @@
+use nu_path::trim_trailing_slash;
+use std::path::MAIN_SEPARATOR;
+
+/// Helper function that joins string literals with '/' or '\', based on the host OS
+fn join_path_sep(pieces: &[&str]) -> String {
+    let sep_string = String::from(MAIN_SEPARATOR);
+    pieces.join(&sep_string)
+}
+
+#[test]
+fn trims_trailing_slash_without_trailing_slash() {
+    let path = join_path_sep(&["some", "path"]);
+
+    let actual = trim_trailing_slash(&path);
+
+    assert_eq!(actual, &path)
+}
+
+#[test]
+fn trims_trailing_slash() {
+    let path = join_path_sep(&["some", "path", ""]);
+
+    let actual = trim_trailing_slash(&path);
+    let expected = join_path_sep(&["some", "path"]);
+
+    assert_eq!(actual, &expected)
+}
+
+#[test]
+fn trims_many_trailing_slashes() {
+    let path = join_path_sep(&["some", "path", "", "", "", ""]);
+
+    let actual = trim_trailing_slash(&path);
+    let expected = join_path_sep(&["some", "path"]);
+
+    assert_eq!(actual, &expected)
+}
+
+#[test]
+fn trims_trailing_slash_empty() {
+    let path = String::from(MAIN_SEPARATOR);
+    let actual = trim_trailing_slash(&path);
+
+    assert_eq!(actual, "")
+}