add TSamFailedOnly command and change test output within the floating window

tests/test_samurai_output_spec.lua

@@ -76,4 +76,157 @@ describe("test-samurai public API", function()
 
     assert.is_true(called)
   end)
+
+  it("delegates test_failed_only to core.run_failed_only", function()
+    local called = false
+    local orig = core.run_failed_only
+
+    core.run_failed_only = function()
+      called = true
+    end
+
+    test_samurai.test_failed_only()
+
+    core.run_failed_only = orig
+
+    assert.is_true(called)
+  end)
+end)
+
+describe("test-samurai output formatting", function()
+  before_each(function()
+    test_samurai.setup()
+  end)
+
+  it("formats JSON output as PASS/FAIL lines", function()
+    local json = vim.json.encode({
+      testResults = {
+        {
+          assertionResults = {
+            { status = "passed", title = "inner 1", fullName = "outer inner 1" },
+            { status = "skipped", title = "inner skip", fullName = "outer inner skip" },
+            { status = "failed", title = "inner 2", fullName = "outer inner 2" },
+          },
+        },
+      },
+    })
+
+    local orig_jobstart = vim.fn.jobstart
+    vim.fn.jobstart = function(_cmd, opts)
+      if opts and opts.on_stdout then
+        opts.on_stdout(1, { json }, nil)
+      end
+      if opts and opts.on_exit then
+        opts.on_exit(1, 1, nil)
+      end
+      return 1
+    end
+
+    local bufnr = vim.api.nvim_create_buf(false, true)
+    vim.api.nvim_buf_set_name(bufnr, "/tmp/output_format.test.ts")
+    vim.bo[bufnr].filetype = "typescript"
+    vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, {
+      'describe("outer", function() {',
+      '  it("inner 1", function() {',
+      "    -- inside 1",
+      "  })",
+      "",
+      '  it("inner 2", function() {',
+      "    -- inside 2",
+      "  })",
+      "})",
+    })
+
+    vim.api.nvim_set_current_buf(bufnr)
+    vim.api.nvim_win_set_cursor(0, { 7, 0 })
+
+    core.run_nearest()
+
+    local out_buf = vim.api.nvim_get_current_buf()
+    local lines = vim.api.nvim_buf_get_lines(out_buf, 0, -1, false)
+
+    vim.fn.jobstart = orig_jobstart
+
+    local has_pass = false
+    local has_skip = false
+    local has_fail = false
+    for _, line in ipairs(lines) do
+      if line == "[ PASS ] - outer inner 1" then
+        has_pass = true
+      elseif line == "[ SKIP ] - outer inner skip" then
+        has_skip = true
+      elseif line == "[ FAIL ] - outer inner 2" then
+        has_fail = true
+      end
+    end
+    assert.is_true(has_pass)
+    assert.is_true(has_skip)
+    assert.is_true(has_fail)
+  end)
+
+  it("formats TAP output as PASS/FAIL lines", function()
+    test_samurai.setup({
+      runner_modules = {
+        "test-samurai.runners.js-vitest",
+      },
+    })
+
+    local orig_jobstart = vim.fn.jobstart
+    vim.fn.jobstart = function(_cmd, opts)
+      if opts and opts.on_stdout then
+        opts.on_stdout(1, {
+          "TAP version 13",
+          "1..2",
+          "ok 1 - outer inner 1 # time=1.00ms",
+          "ok 2 - outer inner skip # SKIP not now",
+          "not ok 2 - outer inner 2 # time=2.00ms",
+        }, nil)
+      end
+      if opts and opts.on_exit then
+        opts.on_exit(1, 1, nil)
+      end
+      return 1
+    end
+
+    local bufnr = vim.api.nvim_create_buf(false, true)
+    vim.api.nvim_buf_set_name(bufnr, "/tmp/output_format.tap.test.ts")
+    vim.bo[bufnr].filetype = "typescript"
+    vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, {
+      'describe("outer", function() {',
+      '  it("inner 1", function() {',
+      "    -- inside 1",
+      "  })",
+      "",
+      '  it("inner 2", function() {',
+      "    -- inside 2",
+      "  })",
+      "})",
+    })
+
+    vim.api.nvim_set_current_buf(bufnr)
+    vim.api.nvim_win_set_cursor(0, { 7, 0 })
+
+    core.run_nearest()
+
+    local out_buf = vim.api.nvim_get_current_buf()
+    local lines = vim.api.nvim_buf_get_lines(out_buf, 0, -1, false)
+
+    vim.fn.jobstart = orig_jobstart
+
+    local has_pass = false
+    local has_skip = false
+    local has_fail = false
+    for _, line in ipairs(lines) do
+      if line == "[ PASS ] - outer inner 1" then
+        has_pass = true
+      elseif line == "[ SKIP ] - outer inner skip" then
+        has_skip = true
+      elseif line == "[ FAIL ] - outer inner 2" then
+        has_fail = true
+      end
+    end
+    assert.is_true(has_pass)
+    assert.is_true(has_skip)
+    assert.is_true(has_fail)
+  end)
 end)