show always detail-float on <cr>

README.md

@@ -83,6 +83,7 @@ Additional keymaps:
 - Press `<cr>` on a `[ FAIL ] ...` line in the listing to open/update the **Detail-Float** as a 20/80 split (left 20% listing, right 80% detail).
 - ANSI color translation is only applied in the **Detail-Float**; the **Test-Listing-Float** shows raw text without ANSI translation.
 - `<esc><esc>` hides the floating window; `TSamShowOutput` reopens it.
+- If no output is captured for a test, the **Detail-Float** shows `No output captured`.
 
 ## Runner architecture
 

doc/test-samurai.txt

@@ -77,7 +77,8 @@ Detail-Float: right subwindow showing detailed output for a test.
 After running a test command, the UI opens in listing mode (only the
 Test-Listing-Float is visible). Press <cr> on a [ FAIL ] entry to open
 the Detail-Float with a 20/80 split. ANSI colors are translated only
-inside the Detail-Float.
+inside the Detail-Float. If no output is captured for a test, the
+Detail-Float shows "No output captured".
 
 
 RUNNER ARCHITECTURE                                       *test-samurai-runners*

lua/test-samurai/core.lua

@@ -88,6 +88,9 @@ local function help_lines()
     "  <leader>z    Toggle Detail-Float full width",
     "  <C-c>        Close Detail-Float",
     "  ?            Show this help",
+    "",
+    "Notes:",
+    "  No output captured -> shows placeholder text",
   }
 end
 
@@ -1329,7 +1332,7 @@ function M.open_test_output_at_cursor()
     end
   end
   if type(output) ~= "table" or #output == 0 then
-    vim.notify("[test-samurai] No output captured for " .. test_name, vim.log.levels.WARN)
+    open_detail_split({ "", "No output captured" }, "default")
     return
   end
   local border_kind = status and status:lower() or nil

tests/test_samurai_core_spec.lua

@@ -554,4 +554,95 @@ describe("test-samurai core (no bundled runners)", function()
     assert.equals("TestC", build_specs[2].full_name)
     assert.equals("Suite TestC", build_specs[2].mocha_full_title)
   end)
+
+  it("opens detail float with placeholder when no output captured", function()
+    local runner = {
+      name = "test-runner-no-output",
+    }
+
+    function runner.is_test_file(_bufnr)
+      return true
+    end
+
+    function runner.find_nearest(bufnr, _row, _col)
+      return { file = vim.api.nvim_buf_get_name(bufnr), cwd = vim.loop.cwd(), test_name = "TestA" }
+    end
+
+    function runner.build_command(spec)
+      return { cmd = { "echo", "nearest" }, cwd = spec.cwd }
+    end
+
+    function runner.build_file_command(_bufnr)
+      return { cmd = { "echo", "file" } }
+    end
+
+    function runner.build_all_command(_bufnr)
+      return { cmd = { "echo", "all" } }
+    end
+
+    function runner.build_failed_command(last_command, _failures, _scope_kind)
+      return { cmd = { "echo", "failed" }, cwd = last_command and last_command.cwd or nil }
+    end
+
+    function runner.parse_results(_output)
+      return { passes = {}, failures = { "TestMissingOutput" }, skips = {} }
+    end
+
+    function runner.output_parser()
+      return {
+        on_line = function(_line, _state)
+          return nil
+        end,
+        on_complete = function(output, _state)
+          return runner.parse_results(output)
+        end,
+      }
+    end
+
+    function runner.parse_test_output(_output)
+      return {}
+    end
+
+    function runner.collect_failed_locations(_failures, _command, _scope_kind)
+      return {}
+    end
+
+    package.loaded["test-samurai-no-output-runner"] = runner
+    test_samurai.setup({ runner_modules = { "test-samurai-no-output-runner" } })
+
+    local bufnr = vim.api.nvim_create_buf(false, true)
+    vim.api.nvim_buf_set_name(bufnr, "/tmp/test_samurai_no_output.go")
+    vim.bo[bufnr].filetype = "go"
+    vim.api.nvim_set_current_buf(bufnr)
+
+    local orig_jobstart = vim.fn.jobstart
+    vim.fn.jobstart = function(_cmd, opts)
+      if opts.on_exit then
+        opts.on_exit(nil, 0, nil)
+      end
+      return 1
+    end
+
+    core.run_nearest()
+
+    local listing_buf = vim.api.nvim_get_current_buf()
+    local lines = vim.api.nvim_buf_get_lines(listing_buf, 0, -1, false)
+    local target = nil
+    for i, line in ipairs(lines) do
+      if line:match("^%[ FAIL %] %- TestMissingOutput") then
+        target = i
+        break
+      end
+    end
+    assert.is_true(target ~= nil)
+
+    vim.api.nvim_win_set_cursor(0, { target, 0 })
+    core.open_test_output_at_cursor()
+
+    local detail_buf = vim.api.nvim_get_current_buf()
+    local detail_lines = vim.api.nvim_buf_get_lines(detail_buf, 0, -1, false)
+    assert.same({ "", "No output captured" }, detail_lines)
+
+    vim.fn.jobstart = orig_jobstart
+  end)
 end)