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@ -5,8 +5,11 @@ package prober
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http/httptest"
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"strings"
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"sync"
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"sync/atomic"
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@ -17,6 +20,7 @@ import (
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"github.com/google/go-cmp/cmp/cmpopts"
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"github.com/prometheus/client_golang/prometheus/testutil"
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"tailscale.com/tstest"
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"tailscale.com/tsweb"
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)
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const (
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@ -461,6 +465,87 @@ func TestProbeInfoRecent(t *testing.T) {
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}
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}
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func TestProberRunHandler(t *testing.T) {
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clk := newFakeTime()
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tests := []struct {
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name string
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probeFunc func(context.Context) error
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wantResponseCode int
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wantJSONResponse RunHandlerResponse
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wantPlaintextResponse string
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}{
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{
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name: "success",
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probeFunc: func(context.Context) error { return nil },
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wantResponseCode: 200,
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wantJSONResponse: RunHandlerResponse{
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ProbeInfo: ProbeInfo{
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Name: "success",
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Interval: probeInterval,
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Result: true,
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RecentResults: []bool{true, true},
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},
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PreviousSuccessRatio: 1,
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},
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wantPlaintextResponse: "Probe succeeded",
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},
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{
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name: "failure",
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probeFunc: func(context.Context) error { return fmt.Errorf("error123") },
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wantResponseCode: 424,
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wantJSONResponse: RunHandlerResponse{
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ProbeInfo: ProbeInfo{
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Name: "failure",
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Interval: probeInterval,
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Result: false,
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Error: "error123",
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RecentResults: []bool{false, false},
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},
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},
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wantPlaintextResponse: "Probe failed",
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},
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}
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for _, tt := range tests {
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for _, reqJSON := range []bool{true, false} {
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t.Run(fmt.Sprintf("%s_json-%v", tt.name, reqJSON), func(t *testing.T) {
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p := newForTest(clk.Now, clk.NewTicker).WithOnce(true)
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probe := p.Run(tt.name, probeInterval, nil, FuncProbe(tt.probeFunc))
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defer probe.Close()
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<-probe.stopped // wait for the first run.
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w := httptest.NewRecorder()
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req := httptest.NewRequest("GET", "/prober/run/?name="+tt.name, nil)
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if reqJSON {
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req.Header.Set("Accept", "application/json")
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}
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tsweb.StdHandler(tsweb.ReturnHandlerFunc(p.RunHandler), tsweb.HandlerOptions{}).ServeHTTP(w, req)
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if w.Result().StatusCode != tt.wantResponseCode {
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t.Errorf("unexpected response code: got %d, want %d", w.Code, tt.wantResponseCode)
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}
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if reqJSON {
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var gotJSON RunHandlerResponse
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if err := json.Unmarshal(w.Body.Bytes(), &gotJSON); err != nil {
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t.Fatalf("failed to unmarshal JSON response: %v; body: %s", err, w.Body.String())
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}
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if diff := cmp.Diff(tt.wantJSONResponse, gotJSON, cmpopts.IgnoreFields(ProbeInfo{}, "Start", "End", "Labels", "RecentLatencies")); diff != "" {
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t.Errorf("unexpected JSON response (-want +got):\n%s", diff)
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}
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} else {
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body, _ := io.ReadAll(w.Result().Body)
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if !strings.Contains(string(body), tt.wantPlaintextResponse) {
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t.Errorf("unexpected response body: got %q, want to contain %q", body, tt.wantPlaintextResponse)
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}
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}
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})
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}
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}
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}
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type fakeTicker struct {
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ch chan time.Time
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interval time.Duration
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