fix: enable RST integration by default

lua/image/init.lua

@@ -36,6 +36,9 @@ local default_options = {
     neorg = {
       enabled = true,
     },
+    rst = {
+      enabled = true,
+    },
     syslang = {
       enabled = true,
     },

tests/core/rst_integration_spec.lua

@@ -0,0 +1,43 @@
+local unload_image_modules = function()
+  for module_name in pairs(package.loaded) do
+    if module_name == "image" or module_name:match("^image/") then package.loaded[module_name] = nil end
+  end
+end
+
+describe("rst integration defaults", function()
+  after_each(function()
+    pcall(vim.api.nvim_del_augroup_by_name, "image.nvim")
+    local namespace = vim.api.nvim_get_namespaces()["image.nvim"]
+    if namespace then pcall(vim.api.nvim_set_decoration_provider, namespace, {}) end
+    unload_image_modules()
+  end)
+
+  it("loads rst when integration options override only its rendering settings", function()
+    local configured
+    package.loaded["image/integrations/rst"] = {
+      setup = function(_, options)
+        configured = options
+      end,
+    }
+
+    local image = require("image")
+    image.setup({
+      integrations = {
+        markdown = { enabled = false },
+        asciidoc = { enabled = false },
+        typst = { enabled = false },
+        neorg = { enabled = false },
+        syslang = { enabled = false },
+        html = { enabled = false },
+        css = { enabled = false },
+        org = { enabled = false },
+        rst = { only_render_image_at_cursor = true },
+      },
+      hijack_file_patterns = {},
+    })
+
+    assert.is_true(configured ~= nil)
+    assert.is_true(configured.enabled)
+    assert.is_true(configured.only_render_image_at_cursor)
+  end)
+end)