build http client with default configuration if there's no client con…

…figuration in the config (#20)

core/engine.go

@@ -14,6 +14,15 @@ import (
 	"golang.org/x/text/language"
 )
 
+var boolTrue = true
+
+// DefaultHTTPClientConfig is a default config for HTTP client. It will be used by Engine for building HTTP client
+// if HTTP client config is not present in the configuration.
+var DefaultHTTPClientConfig = &HTTPClientConfig{
+	Timeout:         30,
+	SSLVerification: &boolTrue,
+}
+
 // Engine struct
 type Engine struct {
 	Localizer
@@ -180,24 +189,31 @@ func (e *Engine) SetLogger(l LoggerInterface) *Engine {
 
 // BuildHTTPClient builds HTTP client with provided configuration
 func (e *Engine) BuildHTTPClient(certs *x509.CertPool, replaceDefault ...bool) *Engine {
-	if e.Config.GetHTTPClientConfig() != nil {
-		client, err := NewHTTPClientBuilder().
-			WithLogger(e.Logger()).
-			SetLogging(e.Config.IsDebug()).
-			SetCertPool(certs).
-			FromEngine(e).
-			Build(replaceDefault...)
-
-		if err != nil {
-			panic(err)
-		} else {
-			e.httpClient = client
-		}
+	client, err := NewHTTPClientBuilder().
+		WithLogger(e.Logger()).
+		SetLogging(e.Config.IsDebug()).
+		SetCertPool(certs).
+		FromEngine(e).
+		Build(replaceDefault...)
+
+	if err != nil {
+		panic(err)
+	} else {
+		e.httpClient = client
 	}
 
 	return e
 }
 
+// GetHTTPClientConfig returns configuration for HTTP client
+func (e *Engine) GetHTTPClientConfig() *HTTPClientConfig {
+	if e.Config.GetHTTPClientConfig() != nil {
+		return e.Config.GetHTTPClientConfig()
+	}
+
+	return DefaultHTTPClientConfig
+}
+
 // SetHTTPClient sets HTTP client to engine
 func (e *Engine) SetHTTPClient(client *http.Client) *Engine {
 	if client != nil {

core/engine_test.go

@@ -10,6 +10,7 @@ import (
 	"net/url"
 	"os"
 	"testing"
+	"time"
 
 	"github.com/DATA-DOG/go-sqlmock"
 	"github.com/gin-gonic/gin"
@@ -177,6 +178,37 @@ func (e *EngineTest) Test_BuildHTTPClient() {
 	e.engine.BuildHTTPClient(x509.NewCertPool())
 
 	assert.NotNil(e.T(), e.engine.httpClient)
+	assert.NotNil(e.T(), e.engine.httpClient.Transport)
+
+	transport := e.engine.httpClient.Transport.(*http.Transport)
+	assert.NotNil(e.T(), transport.TLSClientConfig)
+	assert.NotNil(e.T(), transport.TLSClientConfig.RootCAs)
+}
+
+func (e *EngineTest) Test_BuildHTTPClient_NoConfig() {
+	e.engine.Config = &Config{}
+	e.engine.BuildHTTPClient(x509.NewCertPool())
+
+	assert.NotNil(e.T(), e.engine.httpClient)
+	assert.NotNil(e.T(), e.engine.httpClient.Transport)
+
+	transport := e.engine.httpClient.Transport.(*http.Transport)
+	assert.NotNil(e.T(), transport.TLSClientConfig)
+	assert.NotNil(e.T(), transport.TLSClientConfig.RootCAs)
+}
+
+func (e *EngineTest) Test_GetHTTPClientConfig() {
+	e.engine.Config = &Config{}
+	assert.Equal(e.T(), DefaultHTTPClientConfig, e.engine.GetHTTPClientConfig())
+
+	e.engine.Config = &Config{
+		HTTPClientConfig: &HTTPClientConfig{
+			Timeout:         10,
+			SSLVerification: boolPtr(true),
+		},
+	}
+	assert.NotEqual(e.T(), DefaultHTTPClientConfig, e.engine.GetHTTPClientConfig())
+	assert.Equal(e.T(), time.Duration(10), e.engine.GetHTTPClientConfig().Timeout)
 }
 
 func (e *EngineTest) Test_WithCookieSessions() {

core/http_client_builder.go

@@ -155,7 +155,7 @@ func (b *HTTPClientBuilder) FromConfig(config *HTTPClientConfig) *HTTPClientBuil
 
 // FromEngine fulfills mock configuration from ConfigInterface inside Engine
 func (b *HTTPClientBuilder) FromEngine(engine *Engine) *HTTPClientBuilder {
-	return b.FromConfig(engine.Config.GetHTTPClientConfig())
+	return b.FromConfig(engine.GetHTTPClientConfig())
 }
 
 // buildDialer initializes dialer with provided timeout