feat(hurl.nvim): add support for fixture variables

This is a workaround until built-in from hurl

README.md

@@ -20,6 +20,10 @@
 - 🚀 Execute HTTP requests directly from `.hurl` files.
 - 👁‍🗨 Multiple display modes for API response: popup or split.
 - 🌈 Highly customizable through settings.
+- 📦 Environment file support for managing environment variables.
+- 🛠 Set environment variables with `HurlSetVariable` command.
+- 📝 View and manage environment variables with `HurlManageVariable` command.
+- 📜 View the response of your last HTTP request with `HurlShowLastResponse` command.
 
 ## Usage
 
@@ -126,6 +130,46 @@ To change the environment file name, use the `HurlSetEnvFile` command followed b
 - Ensure that the new environment file exists in the directories where the plugin searches for it, as outlined in the [File Location](#file-location) section.
 - This change will apply globally for the current session of Neovim. If you restart Neovim, it will revert to the default `vars.env` unless you change it again.
 
+## Test fixtures
+
+This is a feature that allows you to define custom variables in your `.hurl` files. You can define a list of custom variables with a name and a callback function that returns the value of the variable. The callback function is executed every time the variable is used in the `.hurl` file.
+
+> Note
+> This is a workaround to inject dynamic variables into the hurl command, refer https://github.com/Orange-OpenSource/hurl/issues?q=sort:updated-desc+is:open+label:%22topic:+generators%22
+> -- This is a workaround to inject dynamic variables into the hurl command, refer https://github.com/Orange-OpenSource/hurl/issues?q=sort:updated-desc+is:open+label:%22topic:+generators%22
+
+```lua
+  -- Custom below to add your own fixture variables
+  fixture_vars = {
+    {
+      name = 'random_int_number',
+      callback = function()
+        return math.random(1, 1000)
+      end,
+    },
+    {
+      name = 'random_float_number',
+      callback = function()
+        local result = math.random() * 10
+        return string.format('%.2f', result)
+      end,
+    },
+  }
+```
+
+Then you can use `{{random_int_number}}` and `{{random_float_number}}` in your `.hurl` files.
+
+```hurl
+POST https://api.example.com
+Content-Type: application/json
+
+{
+  "name": "Product ID {{random_int_number}}",
+  "price": {{random_float_number}}
+}
+
+```
+
 ## Demo
 
 Check out the following demos to see `hurl.nvim` in action:
@@ -225,47 +269,70 @@ These key mappings are active within the popup windows that `hurl.nvim` displays
 
 `hurl.nvim` can be customized with the following default configurations:
 
+<details><summary>Default Options</summary>
+
+</details>
 ```lua
 local default_config = {
   -- Toggle debugging information
   debug = false, -- If true, logs will be saved at ~/.local/state/nvim/hurl.nvim.log
 
-  -- Set the display mode for the response: 'split' or 'popup'
-  mode = 'split',
+-- Set the display mode for the response: 'split' or 'popup'
+mode = 'split',
 
-  -- Split settings
-  split_position = "right",
-  split_size = "50%",
+-- Split settings
+split_position = "right",
+split_size = "50%",
 
-  -- Popup settings
-  popup_position = '50%',
-  popup_size = {
-    width = 80,
-    height = 40,
-  },
+-- Popup settings
+popup_position = '50%',
+popup_size = {
+width = 80,
+height = 40,
+},
 
-  -- Default environment file name
-  env_file = {
-      'vars.env',
-  },
+-- Default environment file name
+env_file = {
+'vars.env',
+},
 
-  -- Specify formatters for different response types
-  formatters = {
-    json = { 'jq' },  -- Uses jq to format JSON responses
-    html = {
-      'prettier',     -- Uses prettier to format HTML responses
-      '--parser',
-      'html',
-    },
-    xml = {
-      'tidy',         -- Uses tidy to format XML responses
-      '-xml',
-      '-i',
-      '-q',
-    },
-  },
+-- Default test fixtures
+fixture_vars = {
+{
+name = 'random_int_number',
+callback = function()
+return math.random(1, 1000)
+end,
+},
+{
+name = 'random_float_number',
+callback = function()
+local result = math.random() \* 10
+return string.format('%.2f', result)
+end,
+},
+},
+
+-- Specify formatters for different response types
+formatters = {
+json = { 'jq' }, -- Uses jq to format JSON responses
+html = {
+'prettier', -- Uses prettier to format HTML responses
+'--parser',
+'html',
+},
+xml = {
+'tidy', -- Uses tidy to format XML responses
+'-xml',
+'-i',
+'-q',
+},
+},
 }
-```
+
+````
+
+</details>
 
 To apply these configurations, include them in your Neovim setup like this:
 
@@ -289,7 +356,7 @@ require('hurl').setup({
     },
   },
 })
-```
+````
 
 Adjust the settings as per your needs to enhance your development experience with `hurl.nvim`.
 

lua/hurl/init.lua

@@ -15,6 +15,21 @@ local default_config = {
     height = 40,
   },
   env_file = { 'vars.env' },
+  fixture_vars = {
+    {
+      name = 'random_int_number',
+      callback = function()
+        return math.random(1, 1000)
+      end,
+    },
+    {
+      name = 'random_float_number',
+      callback = function()
+        local result = math.random() * 10
+        return string.format('%.2f', result)
+      end,
+    },
+  },
   find_env_files_in_folders = utils.find_env_files_in_folders,
   formatters = {
     json = { 'jq' },

lua/hurl/main.lua

@@ -125,6 +125,15 @@ local function execute_hurl_cmd(opts, callback)
     end
   end
 
+  -- Inject fixture variables into the command
+  -- This is a workaround to inject dynamic variables into the hurl command, refer https://github.com/Orange-OpenSource/hurl/issues?q=sort:updated-desc+is:open+label:%22topic:+generators%22
+  if _HURL_GLOBAL_CONFIG.fixture_vars then
+    for _, fixture in pairs(_HURL_GLOBAL_CONFIG.fixture_vars) do
+      table.insert(opts, '--variable')
+      table.insert(opts, fixture.name .. '=' .. fixture.callback())
+    end
+  end
+
   -- Include the HTTP headers in the output and do not colorize output.
   local cmd = vim.list_extend({ 'hurl', '-i', '--no-color' }, opts)
   response = {}