diff --git a/test/abyss/theme_spec.lua b/test/abyss/theme_spec.lua
new file mode 100644
index 0000000..fbcb1b7
--- /dev/null
+++ b/test/abyss/theme_spec.lua
@@ -0,0 +1,58 @@
+local abyss = require("abyss")
+local config = require("abyss.config")
+
+describe("Abyss.nvim", function ()
+  before_each(function ()
+    vim.cmd.colorscheme "abyss"
+  end)
+
+  it("works with default setup", function ()
+    abyss.setup()
+    assert.are.same(config.default_options, config.options)
+  end)
+
+  it("has correct colors_name", function ()
+    assert.are.same("abyss", vim.g.colors_name)
+  end)
+
+  it("should change the config", function ()
+    local expected = {
+      italic_comments = false,
+      italic = false,
+      bold = true,
+      transparent_background = true,
+      treesitter = not vim.fn.has("nvim") ~= 1,
+      overrides = nil,
+    }
+
+    abyss.setup({ italic_comments = false, bold = true, transparent_background = true })
+    assert.are.same(expected, config.options)
+  end)
+
+  it("has nil overrides", function ()
+    abyss.setup()
+    assert.are.are_nil(config.options.overrides, "Overrides property should be a nil value.")
+  end)
+
+  it("has overrides", function ()
+    abyss.setup({
+      overrides = {
+        String = { fg = "#fffa0c" }
+      }
+    })
+
+    assert.are.not_nil(config.options.overrides, "Overrides property must not be a nil value.")
+  end)
+
+  describe("Treesitter option", function ()
+    it("should check if vim or neovim is running", function ()
+      abyss.setup()
+      local is_vim = vim.fn.has("nvim") ~= 1
+      if is_vim then
+        assert.are.equals(is_vim, config.options.treesitter, "Treesitter must be disabled for Vim.")
+      else
+        assert.are.equals(not is_vim, config.options.treesitter, "Treesitter must be enabled for Neovim.")
+      end
+    end)
+  end)
+end)
diff --git a/test/minimal_init.vim b/test/minimal_init.vim
new file mode 100644
index 0000000..acaac2e
--- /dev/null
+++ b/test/minimal_init.vim
@@ -0,0 +1,3 @@
+set rtp+=.
+set rtp+=./test/plenary
+runtime! plugin/plenary.vim
\ No newline at end of file