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https://github.com/TwiN/gatus.git
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feat(alerting): Add support for n8n alerts (#1309)
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TwiN
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364
alerting/provider/n8n/n8n_test.go
Normal file
364
alerting/provider/n8n/n8n_test.go
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@@ -0,0 +1,364 @@
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package n8n
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import (
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"encoding/json"
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"net/http"
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"testing"
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/client"
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"github.com/TwiN/gatus/v5/config/endpoint"
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"github.com/TwiN/gatus/v5/test"
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)
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func TestAlertProvider_Validate(t *testing.T) {
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invalidProvider := AlertProvider{DefaultConfig: Config{WebhookURL: ""}}
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if err := invalidProvider.Validate(); err == nil {
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t.Error("provider shouldn't have been valid")
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}
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validProvider := AlertProvider{DefaultConfig: Config{WebhookURL: "https://example.com"}}
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if err := validProvider.Validate(); err != nil {
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t.Error("provider should've been valid")
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}
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}
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func TestAlertProvider_ValidateWithOverride(t *testing.T) {
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providerWithInvalidOverrideGroup := AlertProvider{
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Overrides: []Override{
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{
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Config: Config{WebhookURL: "http://example.com"},
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Group: "",
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},
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},
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}
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if err := providerWithInvalidOverrideGroup.Validate(); err == nil {
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t.Error("provider Group shouldn't have been valid")
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}
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providerWithInvalidOverrideTo := AlertProvider{
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Overrides: []Override{
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{
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Config: Config{WebhookURL: ""},
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Group: "group",
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},
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},
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}
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if err := providerWithInvalidOverrideTo.Validate(); err == nil {
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t.Error("provider webhook URL shouldn't have been valid")
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}
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providerWithValidOverride := AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: []Override{
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{
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Config: Config{WebhookURL: "http://example.com"},
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Group: "group",
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},
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},
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}
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if err := providerWithValidOverride.Validate(); err != nil {
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t.Error("provider should've been valid")
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}
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}
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func TestAlertProvider_Send(t *testing.T) {
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defer client.InjectHTTPClient(nil)
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firstDescription := "description-1"
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secondDescription := "description-2"
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scenarios := []struct {
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Name string
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Provider AlertProvider
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Alert alert.Alert
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Resolved bool
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MockRoundTripper test.MockRoundTripper
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ExpectedError bool
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}{
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{
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Name: "triggered",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
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}),
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ExpectedError: false,
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},
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{
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Name: "triggered-error",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
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}),
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ExpectedError: true,
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},
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{
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Name: "resolved",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
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}),
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ExpectedError: false,
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},
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{
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Name: "resolved-error",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
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}),
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ExpectedError: true,
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},
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}
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for _, scenario := range scenarios {
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t.Run(scenario.Name, func(t *testing.T) {
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client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
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err := scenario.Provider.Send(
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&endpoint.Endpoint{Name: "endpoint-name"},
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&scenario.Alert,
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&endpoint.Result{
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ConditionResults: []*endpoint.ConditionResult{
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{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
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{Condition: "[STATUS] == 200", Success: scenario.Resolved},
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},
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},
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scenario.Resolved,
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)
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if scenario.ExpectedError && err == nil {
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t.Error("expected error, got none")
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}
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if !scenario.ExpectedError && err != nil {
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t.Error("expected no error, got", err.Error())
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}
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})
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}
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}
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func TestAlertProvider_buildRequestBody(t *testing.T) {
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firstDescription := "description-1"
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secondDescription := "description-2"
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scenarios := []struct {
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Name string
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Provider AlertProvider
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Endpoint endpoint.Endpoint
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Alert alert.Alert
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Resolved bool
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ExpectedBody Body
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}{
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{
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Name: "triggered",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Endpoint: endpoint.Endpoint{Name: "name", URL: "https://example.org"},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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ExpectedBody: Body{
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Title: "Gatus",
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EndpointName: "name",
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EndpointURL: "https://example.org",
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AlertDescription: "description-1",
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Resolved: false,
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Message: "An alert for name has been triggered due to having failed 3 time(s) in a row",
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ConditionResults: []ConditionResult{
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{Condition: "[CONNECTED] == true", Success: false},
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{Condition: "[STATUS] == 200", Success: false},
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},
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},
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},
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{
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Name: "triggered-with-group",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Endpoint: endpoint.Endpoint{Name: "name", Group: "group", URL: "https://example.org"},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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ExpectedBody: Body{
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Title: "Gatus",
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EndpointName: "name",
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EndpointGroup: "group",
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EndpointURL: "https://example.org",
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AlertDescription: "description-1",
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Resolved: false,
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Message: "An alert for group/name has been triggered due to having failed 3 time(s) in a row",
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ConditionResults: []ConditionResult{
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{Condition: "[CONNECTED] == true", Success: false},
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{Condition: "[STATUS] == 200", Success: false},
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},
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},
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},
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{
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Name: "resolved",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
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Endpoint: endpoint.Endpoint{Name: "name", URL: "https://example.org"},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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ExpectedBody: Body{
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Title: "Gatus",
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EndpointName: "name",
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EndpointURL: "https://example.org",
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AlertDescription: "description-2",
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Resolved: true,
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Message: "An alert for name has been resolved after passing successfully 5 time(s) in a row",
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ConditionResults: []ConditionResult{
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{Condition: "[CONNECTED] == true", Success: true},
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{Condition: "[STATUS] == 200", Success: true},
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},
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},
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},
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{
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Name: "resolved-with-custom-title",
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Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com", Title: "Custom Title"}},
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Endpoint: endpoint.Endpoint{Name: "name", URL: "https://example.org"},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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ExpectedBody: Body{
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Title: "Custom Title",
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EndpointName: "name",
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EndpointURL: "https://example.org",
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AlertDescription: "description-2",
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Resolved: true,
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Message: "An alert for name has been resolved after passing successfully 5 time(s) in a row",
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ConditionResults: []ConditionResult{
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{Condition: "[CONNECTED] == true", Success: true},
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{Condition: "[STATUS] == 200", Success: true},
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},
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},
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},
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}
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for _, scenario := range scenarios {
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t.Run(scenario.Name, func(t *testing.T) {
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cfg, err := scenario.Provider.GetConfig(scenario.Endpoint.Group, &scenario.Alert)
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if err != nil {
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t.Fatal("couldn't get config:", err.Error())
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}
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body := scenario.Provider.buildRequestBody(
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cfg,
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&scenario.Endpoint,
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&scenario.Alert,
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&endpoint.Result{
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ConditionResults: []*endpoint.ConditionResult{
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{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
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{Condition: "[STATUS] == 200", Success: scenario.Resolved},
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},
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},
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scenario.Resolved,
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)
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var actualBody Body
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if err := json.Unmarshal(body, &actualBody); err != nil {
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t.Error("expected body to be valid JSON, got error:", err.Error())
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}
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if actualBody.Title != scenario.ExpectedBody.Title {
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t.Errorf("expected title to be %s, got %s", scenario.ExpectedBody.Title, actualBody.Title)
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}
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if actualBody.EndpointName != scenario.ExpectedBody.EndpointName {
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t.Errorf("expected endpoint name to be %s, got %s", scenario.ExpectedBody.EndpointName, actualBody.EndpointName)
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}
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if actualBody.Resolved != scenario.ExpectedBody.Resolved {
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t.Errorf("expected resolved to be %v, got %v", scenario.ExpectedBody.Resolved, actualBody.Resolved)
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}
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if actualBody.Message != scenario.ExpectedBody.Message {
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t.Errorf("expected message to be %s, got %s", scenario.ExpectedBody.Message, actualBody.Message)
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}
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})
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}
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}
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func TestAlertProvider_GetDefaultAlert(t *testing.T) {
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if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
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t.Error("expected default alert to be not nil")
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}
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if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
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t.Error("expected default alert to be nil")
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}
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}
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func TestAlertProvider_GetConfig(t *testing.T) {
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scenarios := []struct {
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Name string
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Provider AlertProvider
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InputGroup string
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InputAlert alert.Alert
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ExpectedOutput Config
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}{
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{
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Name: "provider-no-override-specify-no-group-should-default",
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Provider: AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: nil,
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},
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InputGroup: "",
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InputAlert: alert.Alert{},
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ExpectedOutput: Config{WebhookURL: "http://example.com"},
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},
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{
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Name: "provider-no-override-specify-group-should-default",
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Provider: AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: nil,
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},
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InputGroup: "group",
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InputAlert: alert.Alert{},
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ExpectedOutput: Config{WebhookURL: "http://example.com"},
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},
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{
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Name: "provider-with-override-specify-no-group-should-default",
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Provider: AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: []Override{
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{
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Group: "group",
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Config: Config{WebhookURL: "http://example01.com"},
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},
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},
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},
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InputGroup: "",
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InputAlert: alert.Alert{},
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ExpectedOutput: Config{WebhookURL: "http://example.com"},
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},
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{
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Name: "provider-with-override-specify-group-should-override",
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Provider: AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: []Override{
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{
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Group: "group",
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Config: Config{WebhookURL: "http://group-example.com"},
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},
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},
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},
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InputGroup: "group",
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InputAlert: alert.Alert{},
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ExpectedOutput: Config{WebhookURL: "http://group-example.com"},
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},
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{
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Name: "provider-with-group-override-and-alert-override--alert-override-should-take-precedence",
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Provider: AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: []Override{
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{
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Group: "group",
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Config: Config{WebhookURL: "http://group-example.com"},
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},
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},
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},
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InputGroup: "group",
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InputAlert: alert.Alert{ProviderOverride: map[string]any{"webhook-url": "http://alert-example.com"}},
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ExpectedOutput: Config{WebhookURL: "http://alert-example.com"},
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},
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}
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for _, scenario := range scenarios {
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t.Run(scenario.Name, func(t *testing.T) {
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got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
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if err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if got.WebhookURL != scenario.ExpectedOutput.WebhookURL {
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t.Errorf("expected webhook URL to be %s, got %s", scenario.ExpectedOutput.WebhookURL, got.WebhookURL)
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}
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// Test ValidateOverrides as well, since it really just calls GetConfig
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if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
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t.Errorf("unexpected error: %s", err)
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}
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})
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}
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}
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