Function TestWebInterface

internal/driver/webui_test.go:68–154

(t *testing.T)

}

func TestWebInterface(t *testing.T) {
	prof := makeFakeProfile()
	server := makeTestServer(t, prof)
	haveDot := false
	if _, err := exec.LookPath("dot"); err == nil {
		haveDot = true
	}

	type testCase struct {
		path    string
		want    []string
		needDot bool
	}
	testcases := []testCase{
		{"/", []string{"F1", "F2", "F3", "testbin", "cpu"}, true},
		{"/top", []string{`"Name":"F2","InlineLabel":"","Flat":200,"Cum":300,"FlatFormat":"200ms","CumFormat":"300ms"}`}, false},
		{"/source?f=" + url.QueryEscape("F[12]"), []string{
			"F1",
			"F2",
			`\. +300ms .*f1:asm`,    // Cumulative count for F1
			"200ms +300ms .*f2:asm", // Flat + cumulative count for F2
		}, false},
		{"/peek?f=" + url.QueryEscape("F[12]"),
			[]string{"300ms.*F1", "200ms.*300ms.*F2"}, false},
		{"/disasm?f=" + url.QueryEscape("F[12]"),
			[]string{"f1:asm", "f2:asm"}, false},
		{"/flamegraph", []string{
			"File: testbin",
			// Check that interesting frames are included.
			`\bF1\b`,
			`\bF2\b`,
			// Check new view JS is included.
			`function stackViewer`,
			// Check new view CSS is included.
			"#stack-chart {",
		}, false},
	}
	for _, c := range testcases {
		if c.needDot && !haveDot {
			t.Log("skipping", c.path, "since dot (graphviz) does not seem to be installed")
			continue
		}
		res, err := http.Get(server.URL + c.path)
		if err != nil {
			t.Error("could not fetch", c.path, err)
			continue
		}
		data, err := io.ReadAll(res.Body)
		if err != nil {
			t.Error("could not read response", c.path, err)
			continue
		}
		result := string(data)
		for _, w := range c.want {
			if match, _ := regexp.MatchString(w, result); !match {
				t.Errorf("response for %s does not match "+
					"expected pattern '%s'; "+
					"actual result:\n%s", c.path, w, result)