Add unit tests for flux logs

Signed-off-by: Somtochi Onyekwere <somtochionyekwere@gmail.com>

cmd/flux/logs.go

@@ -277,15 +277,15 @@ func logRequest(ctx context.Context, request rest.ResponseWrapper, w io.Writer)
 }
 
 func filterPrintLog(t *template.Template, l *ControllerLogEntry, w io.Writer) {
-	if logsArgs.logLevel != "" && logsArgs.logLevel != l.Level ||
+	//fmt.
-		logsArgs.kind != "" && strings.EqualFold(logsArgs.kind, l.Kind) ||
+	if (logsArgs.logLevel == "" || logsArgs.logLevel == l.Level) &&
-		logsArgs.name != "" && strings.EqualFold(logsArgs.name, l.Name) ||
+		(logsArgs.kind == "" || strings.EqualFold(logsArgs.kind, l.Kind)) &&
-		!logsArgs.allNamespaces && strings.EqualFold(*kubeconfigArgs.Namespace, l.Namespace) {
+		(logsArgs.name == "" || strings.EqualFold(logsArgs.name, l.Name)) &&
-		return
+		(logsArgs.allNamespaces || strings.EqualFold(*kubeconfigArgs.Namespace, l.Namespace)) {
-	}
+		err := t.Execute(w, l)
-	err := t.Execute(w, l)
+		if err != nil {
-	if err != nil {
+			logger.Failuref("log template error: %s", err)
-		logger.Failuref("log template error: %s", err)
+		}
 	}
 }
 

cmd/flux/logs_test.go

@@ -20,7 +20,15 @@ limitations under the License.
 package main
 
 import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"strings"
 	"testing"
+
+	. "github.com/onsi/gomega"
 )
 
 func TestLogsNoArgs(t *testing.T) {
@@ -78,3 +86,106 @@ func TestLogsSinceOnlyOneAllowed(t *testing.T) {
 	}
 	cmd.runTestCmd(t)
 }
+
+var testPodLogs = `{"level":"info","ts":"2022-08-02T12:55:34.419Z","logger":"controller.gitrepository","msg":"no changes since last reconcilation: observed revision","reconciler group":"source.toolkit.fluxcd.io","reconciler kind":"GitRepository","name":"podinfo","namespace":"default"}
+{"level":"error","ts":"2022-08-02T12:56:04.679Z","logger":"controller.gitrepository","msg":"no changes since last reconcilation: observed revision","reconciler group":"source.toolkit.fluxcd.io","reconciler kind":"GitRepository","name":"flux-system","namespace":"flux-system"}
+{"level":"error","ts":"2022-08-02T12:56:34.961Z","logger":"controller.kustomization","msg":"no changes since last reconcilation: observed revision","reconciler group":"kustomize.toolkit.fluxcd.io","reconciler kind":"Kustomization","name":"flux-system","namespace":"flux-system"}
+{"level":"info","ts":"2022-08-02T12:56:34.961Z","logger":"controller.kustomization","msg":"no changes since last reconcilation: observed revision","reconciler group":"kustomize.toolkit.fluxcd.io","reconciler kind":"Kustomization","name":"podinfo","namespace":"default"}
+{"level":"info","ts":"2022-08-02T12:56:34.961Z","logger":"controller.gitrepository","msg":"no changes since last reconcilation: observed revision","reconciler group":"source.toolkit.fluxcd.io","reconciler kind":"GitRepository","name":"podinfo","namespace":"default"}
+{"level":"error","ts":"2022-08-02T12:56:34.961Z","logger":"controller.kustomization","msg":"no changes since last reconcilation: observed revision","reconciler group":"kustomize.toolkit.fluxcd.io","reconciler kind":"Kustomization","name":"podinfo","namespace":"flux-system"}`
+
+type testResponseMapper struct {
+}
+
+func (t *testResponseMapper) DoRaw(_ context.Context) ([]byte, error) {
+	return nil, nil
+}
+
+func (t *testResponseMapper) Stream(_ context.Context) (io.ReadCloser, error) {
+	return io.NopCloser(strings.NewReader(testPodLogs)), nil
+}
+
+func TestLogRequest(t *testing.T) {
+	mapper := &testResponseMapper{}
+	tests := []struct {
+		name       string
+		namespace  string
+		flags      *logsFlags
+		assertFile string
+	}{
+		{
+			name: "all logs",
+			flags: &logsFlags{
+				tail:          -1,
+				allNamespaces: true,
+			},
+			assertFile: "testdata/logs/all-logs.txt",
+		},
+		{
+			name:      "filter by namespace",
+			namespace: "default",
+			flags: &logsFlags{
+				tail: -1,
+			},
+			assertFile: "testdata/logs/namespace.txt",
+		},
+		{
+			name: "filter by kind and namespace",
+			flags: &logsFlags{
+				tail: -1,
+				kind: "Kustomization",
+			},
+			assertFile: "testdata/logs/kind.txt",
+		},
+		{
+			name: "filter by loglevel",
+			flags: &logsFlags{
+				tail:          -1,
+				logLevel:      "error",
+				allNamespaces: true,
+			},
+			assertFile: "testdata/logs/log-level.txt",
+		},
+		{
+			name:      "filter by namespace, name, loglevel and kind",
+			namespace: "flux-system",
+			flags: &logsFlags{
+				tail:     -1,
+				logLevel: "error",
+				kind:     "Kustomization",
+				name:     "podinfo",
+			},
+			assertFile: "testdata/logs/multiple-filters.txt",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			g := NewWithT(t)
+
+			logsArgs = tt.flags
+			if tt.namespace != "" {
+				*kubeconfigArgs.Namespace = tt.namespace
+			}
+			w := bytes.NewBuffer([]byte{})
+			err := logRequest(context.Background(), mapper, w)
+			g.Expect(err).To(BeNil())
+
+			got := make([]byte, w.Len())
+			_, err = w.Read(got)
+			g.Expect(err).To(BeNil())
+
+			expected, err := os.ReadFile(tt.assertFile)
+			g.Expect(err).To(BeNil())
+
+			fmt.Printf("'%s'\n", got)
+			g.Expect(string(got)).To(Equal(string(expected)))
+
+			// reset flags to default
+			*kubeconfigArgs.Namespace = rootArgs.defaults.Namespace
+			logsArgs = &logsFlags{
+				tail: -1,
+			}
+		})
+	}
+}

cmd/flux/testdata/logs/all-logs.txt

@@ -0,0 +1,6 @@
+2022-08-02T12:55:34.419Z info GitRepository/podinfo.default - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:04.679Z error GitRepository/flux-system.flux-system - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z error Kustomization/flux-system.flux-system - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z info Kustomization/podinfo.default - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z info GitRepository/podinfo.default - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z error Kustomization/podinfo.flux-system - no changes since last reconcilation: observed revision 

cmd/flux/testdata/logs/kind.txt

@@ -0,0 +1,2 @@
+2022-08-02T12:56:34.961Z error Kustomization/flux-system.flux-system - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z error Kustomization/podinfo.flux-system - no changes since last reconcilation: observed revision 

cmd/flux/testdata/logs/log-level.txt

@@ -0,0 +1,3 @@
+2022-08-02T12:56:04.679Z error GitRepository/flux-system.flux-system - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z error Kustomization/flux-system.flux-system - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z error Kustomization/podinfo.flux-system - no changes since last reconcilation: observed revision 

cmd/flux/testdata/logs/multiple-filters.txt

@@ -0,0 +1 @@
+2022-08-02T12:56:34.961Z error Kustomization/podinfo.flux-system - no changes since last reconcilation: observed revision 

cmd/flux/testdata/logs/namespace.txt

@@ -0,0 +1,3 @@
+2022-08-02T12:55:34.419Z info GitRepository/podinfo.default - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z info Kustomization/podinfo.default - no changes since last reconcilation: observed revision 
+2022-08-02T12:56:34.961Z info GitRepository/podinfo.default - no changes since last reconcilation: observed revision 

go.mod

@@ -31,6 +31,7 @@ require (
 	github.com/manifoldco/promptui v0.9.0
 	github.com/mattn/go-shellwords v1.0.12
 	github.com/olekukonko/tablewriter v0.0.5
+	github.com/onsi/gomega v1.19.0
 	github.com/spf13/cobra v1.4.0
 	github.com/spf13/pflag v1.0.5
 	github.com/theckman/yacspin v0.13.12
@@ -131,7 +132,6 @@ require (
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/onsi/gomega v1.19.0 // indirect
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/client_golang v1.12.1 // indirect