diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 856e0f4..7b101b8 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -23,7 +23,8 @@ jobs:
           version: 3.x
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: actions/checkout@v3
+      - name: Install Go
+        uses: actions/setup-go@v5
 
       - name: Cache .tests
         uses: actions/cache@v4
@@ -37,6 +38,11 @@ jobs:
           neovim: true
           version: ${{ matrix.version }}
 
+      - uses: actions/checkout@v3
+
+      - name: Install Go bins
+        run: nvim --headless -u "./scripts/minimal_init.lua" -c "GoInstallDeps" -c "qa!"
+
       - name: Run Tests
         run: |
           nvim --version
diff --git a/spec/fixtures/iferr/iferr_input.go b/spec/fixtures/iferr/iferr_input.go
new file mode 100644
index 0000000..b94f158
--- /dev/null
+++ b/spec/fixtures/iferr/iferr_input.go
@@ -0,0 +1,9 @@
+package main
+
+func test() error {
+	return nil
+}
+
+func main() {
+	err := test()
+}
diff --git a/spec/fixtures/iferr/iferr_output.go b/spec/fixtures/iferr/iferr_output.go
new file mode 100644
index 0000000..8ab181a
--- /dev/null
+++ b/spec/fixtures/iferr/iferr_output.go
@@ -0,0 +1,12 @@
+package main
+
+func test() error {
+	return nil
+}
+
+func main() {
+	err := test()
+	if err != nil {
+		return
+	}
+}
diff --git a/spec/integration/iferr_test.lua b/spec/integration/iferr_test.lua
new file mode 100644
index 0000000..f61e179
--- /dev/null
+++ b/spec/integration/iferr_test.lua
@@ -0,0 +1,27 @@
+local t = require "spec.testutils"
+
+local child = MiniTest.new_child_neovim()
+local T = MiniTest.new_set {
+  hooks = {
+    post_once = child.stop,
+    pre_case = function()
+      child.restart { "-u", "scripts/minimal_init.lua" }
+    end,
+  },
+}
+T["iferr"] = MiniTest.new_set {}
+T["iferr"]["works"] = function()
+  local tmp = vim.env.HOME .. "/test.go"
+
+  local fixtures = t.fixtures.read "iferr/iferr"
+  t.fixtures.write(tmp, fixtures.input)
+
+  child.cmd("silent edit " .. tmp)
+  child.fn.setpos(".", { child.fn.bufnr "%", 8, 2, 0 })
+  child.cmd "GoIfErr"
+  child.cmd "write"
+
+  t.eq(t.readfile(tmp), fixtures.output)
+end
+
+return T
diff --git a/spec/integration/struct_tags_test.lua b/spec/integration/struct_tags_test.lua
index 9d09971..4100b9a 100644
--- a/spec/integration/struct_tags_test.lua
+++ b/spec/integration/struct_tags_test.lua
@@ -1,9 +1,27 @@
 local t = require "spec.testutils"
 
-local T = MiniTest.new_set {}
+local child = MiniTest.new_child_neovim()
+local T = MiniTest.new_set {
+  hooks = {
+    post_once = child.stop,
+    pre_case = function()
+      child.restart { "-u", "scripts/minimal_init.lua" }
+    end,
+  },
+}
 T["struct_tags"] = MiniTest.new_set {}
-T["struct_tags"]["fuck it"] = function()
-  t.eq(1, 1)
+T["struct_tags"][".add"] = function()
+  local tmp = vim.env.HOME .. "/test.go"
+
+  local fixtures = t.fixtures.read "tags/add"
+  t.fixtures.write(tmp, fixtures.input)
+
+  child.cmd("silent edit " .. tmp)
+  child.fn.setpos(".", { child.fn.bufnr "%", 3, 6, 0 })
+  child.cmd "GoTagAdd json"
+  child.cmd "write"
+
+  t.eq(t.readfile(tmp), fixtures.output)
 end
 
 return T
diff --git a/spec/testutils.lua b/spec/testutils.lua
index e931820..b4ed3c1 100644
--- a/spec/testutils.lua
+++ b/spec/testutils.lua
@@ -12,7 +12,32 @@ function testutils.eq(a, b)
   return MiniTest.expect.equality(a, b)
 end
 
--- TODO: continue with writing fixtures helpers
--- https://github.com/olexsmir/gopher.nvim/pull/71/files
+---@return string
+function testutils.tmpfile()
+  return vim.fn.tempname() .. ".go"
+end
+
+---@param path string
+---@return string
+function testutils.readfile(path)
+  return vim.fn.join(vim.fn.readfile(path), "\n")
+end
+
+testutils.fixtures = {}
+
+---@param fixture string
+---@return {input: string, output: string}
+function testutils.fixtures.read(fixture)
+  return {
+    input = testutils.readfile(fixtures_dir .. fixture .. "_input.go"),
+    output = testutils.readfile(fixtures_dir .. fixture .. "_output.go"),
+  }
+end
+
+---@param fpath string
+---@param fixture string
+function testutils.fixtures.write(fpath, fixture)
+  vim.fn.writefile(vim.split(fixture, "\n"), fpath)
+end
 
 return testutils