perf(utils): linear scan is_uri (#2648)

lua/tests/automated/utils_spec.lua

@@ -1,7 +1,7 @@
 local utils = require "telescope.utils"
 
 describe("is_uri", function()
-  it("detects valid uris", function()
+  describe("detects valid uris", function()
     local uris = {
       [[https://www.example.com/index.html]],
       [[ftp://ftp.example.com/files/document.pdf]],
@@ -16,40 +16,64 @@ describe("is_uri", function()
     }
 
     for _, uri in ipairs(uris) do
-      assert.True(utils.is_uri(uri))
+      it(uri, function()
+        assert.True(utils.is_uri(uri))
+      end)
     end
   end)
 
-  it("handles windows paths", function()
+  describe("detects invalid uris/paths", function()
+    local inputs = {
+      "hello",
+      "hello:",
+      "123",
+    }
+    for _, input in ipairs(inputs) do
+      it(input, function()
+        assert.False(utils.is_uri(input))
+      end)
+    end
+  end)
+
+  describe("handles windows paths", function()
     local paths = {
       [[C:\Users\Usuario\Documents\archivo.txt]],
       [[D:\Projects\project_folder\source_code.py]],
       [[E:\Music\song.mp3]],
     }
-    for _, path in ipairs(paths) do
-      assert.False(utils.is_uri(path))
+
+    for _, uri in ipairs(paths) do
+      it(uri, function()
+        assert.False(utils.is_uri(uri))
+      end)
     end
   end)
 
-  it("handles linux paths", function()
+  describe("handles linux paths", function()
     local paths = {
       [[/home/usuario/documents/archivo.txt]],
       [[/var/www/html/index.html]],
       [[/mnt/backup/backup_file.tar.gz]],
     }
+
     for _, path in ipairs(paths) do
-      assert.False(utils.is_uri(path))
+      it(path, function()
+        assert.False(utils.is_uri(path))
+      end)
     end
   end)
 
-  it("handles macos paths", function()
+  describe("handles macos paths", function()
     local paths = {
       [[/Users/Usuario/Documents/archivo.txt]],
       [[/Applications/App.app/Contents/MacOS/app_executable]],
       [[/Volumes/ExternalDrive/Data/file.xlsx]],
     }
+
     for _, path in ipairs(paths) do
-      assert.False(utils.is_uri(path))
+      it(path, function()
+        assert.False(utils.is_uri(path))
+      end)
     end
   end)
 end)