Add response body to log (#192)

* Add response body to log

* Update filedownloader.go

* pribt whole request

* pr change requests

* changed variables because of the linter

filedownloader/filedownloader.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/http/httputil"
 	"os"
 
 	"github.com/bitrise-io/go-utils/log"
@@ -108,6 +109,10 @@ func download(context context.Context, client HTTPClient, source string, destina
 	}()
 
 	if resp.StatusCode != http.StatusOK {
+		responseBytes, err := httputil.DumpResponse(resp, true)
+		if err == nil {
+			return fmt.Errorf("unable to download file from: %s. Status code: %d. Response: %s", source, resp.StatusCode, string(responseBytes))
+		}
 		return fmt.Errorf("unable to download file from: %s. Status code: %d", source, resp.StatusCode)
 	}
 

filedownloader/filedownloader_test.go

@@ -3,6 +3,7 @@ package filedownloader
 import (
 	"errors"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
@@ -35,12 +36,12 @@ func Test_get_Success(t *testing.T) {
 	assertFileContent(t, path, "filecontent1")
 }
 
-func Test_get_InvalidStatusCode(t *testing.T) {
+func Test_get_InvalidStatusCode_NoBody(t *testing.T) {
 	// Given
 	path := givenTempPath(t)
 	url := "http://url.com"
 	statusCode := 404
-	expectedErr := fmt.Errorf("unable to download file from: %s. Status code: %d", url, statusCode)
+	expectedErrString := fmt.Sprintf("unable to download file from: %s. Status code: %d. Response: HTTP/0.0 404 Not Found\r\nContent-Length: 0\r\n\r\n", url, statusCode)
 	mockedHTTPClient := givenHTTPClient(
 		http.Response{
 			StatusCode: statusCode,
@@ -50,6 +51,28 @@ func Test_get_InvalidStatusCode(t *testing.T) {
 	// When
 	err := downloader.Get(path, url)
 
+	// Then
+	require.Equal(t, errors.New(expectedErrString).Error(), err.Error())
+	assertFileNotExists(t, path)
+}
+
+func Test_get_InvalidStatusCode_WithBody(t *testing.T) {
+	// Given
+	path := givenTempPath(t)
+	url := "http://url.com"
+	statusCode := 404
+	expectedErr := fmt.Errorf("unable to download file from: %s. Status code: %d. Response: HTTP/0.0 404 Not Found\r\ntest-header: test-header-value\r\n\r\ntest-body", url, statusCode)
+	mockedHTTPClient := givenHTTPClient(
+		http.Response{
+			StatusCode: statusCode,
+			Header:     http.Header{"test-header": []string{"test-header-value"}},
+			Body:       io.NopCloser(strings.NewReader("test-body")),
+		})
+	downloader := givenFileDownloader(mockedHTTPClient)
+
+	// When
+	err := downloader.Get(path, url)
+
 	// Then
 	require.Equal(t, expectedErr, err)
 	assertFileNotExists(t, path)