Add AppLogger to test runs (#230)

* [log] Do not create a new object of `GetAppLogger()` every time

* [tests] Enable AppLogger during testing

Signed-off-by: Julian Strobl <jmastr@mailbox.org>

testutil/network/network.go

@@ -21,6 +21,7 @@ import (
 	"github.com/planetmint/planetmint-go/app"
 	"github.com/planetmint/planetmint-go/config"
 	"github.com/planetmint/planetmint-go/lib"
+	"github.com/planetmint/planetmint-go/util"
 )
 
 type (
@@ -42,6 +43,10 @@ func New(t *testing.T, configs ...Config) *Network {
 	}
 	validatorTmpDir := t.TempDir()
 
+	// enable application logger in tests
+	appLogger := util.GetAppLogger()
+	appLogger.SetTestingLogger(t)
+
 	// set the proper root dir for the test environment so that the abci.go logic works
 	appConfig := config.GetConfig()
 	appConfig.SetRoot(validatorTmpDir + "/node0/simd")

util/logger.go

@@ -1,11 +1,21 @@
 package util
 
-import sdk "github.com/cosmos/cosmos-sdk/types"
+import (
+	"sync"
+	"testing"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
 
 type AppLogger struct {
+	testingLogger *testing.T
 }
 
-var globalApplicationLoggerTag string
+var (
+	globalApplicationLoggerTag string
+	appLogger                  *AppLogger
+	initAppLogger              sync.Once
+)
 
 func init() {
 	// Initialize the package-level variable
@@ -13,17 +23,41 @@ func init() {
 }
 
 func GetAppLogger() *AppLogger {
-	return &AppLogger{}
+	initAppLogger.Do(func() {
+		appLogger = &AppLogger{
+			testingLogger: nil,
+		}
+	})
+	return appLogger
+}
+
+func (logger *AppLogger) SetTestingLogger(testingLogger *testing.T) *AppLogger {
+	logger.testingLogger = testingLogger
+	return logger
+}
+
+func (logger *AppLogger) testingLog(msg string, keyvals ...interface{}) {
+	if logger.testingLogger == nil {
+		return
+	}
+	if len(keyvals) == 0 {
+		logger.testingLogger.Log(msg)
+		return
+	}
+	logger.testingLogger.Log(msg, keyvals)
 }
 
 func (logger *AppLogger) Info(ctx sdk.Context, msg string, keyvals ...interface{}) {
+	logger.testingLog(globalApplicationLoggerTag+msg, keyvals...)
 	ctx.Logger().Info(globalApplicationLoggerTag+msg, keyvals...)
 }
 
 func (logger *AppLogger) Debug(ctx sdk.Context, msg string, keyvals ...interface{}) {
+	logger.testingLog(globalApplicationLoggerTag+msg, keyvals...)
 	ctx.Logger().Debug(globalApplicationLoggerTag+msg, keyvals...)
 }
 
 func (logger *AppLogger) Error(ctx sdk.Context, msg string, keyvals ...interface{}) {
+	logger.testingLog(globalApplicationLoggerTag+msg, keyvals...)
 	ctx.Logger().Error(globalApplicationLoggerTag+msg, keyvals...)
 }