Merge pull request #245 from vdemeester/more-info-unit-tests

Add error unit tests for Info

client/info_test.go

@@ -13,6 +13,31 @@ import (
 	"golang.org/x/net/context"
 )
 
+func TestInfoServerError(t *testing.T) {
+	client := &Client{
+		transport: newMockClient(nil, errorMock(http.StatusInternalServerError, "Server error")),
+	}
+	_, err := client.Info(context.Background())
+	if err == nil || err.Error() != "Error response from daemon: Server error" {
+		t.Fatalf("expected a Server Error, got %v", err)
+	}
+}
+
+func TestInfoInvalidResponseJSONError(t *testing.T) {
+	client := &Client{
+		transport: newMockClient(nil, func(req *http.Request) (*http.Response, error) {
+			return &http.Response{
+				StatusCode: http.StatusOK,
+				Body:       ioutil.NopCloser(bytes.NewReader([]byte("invalid json"))),
+			}, nil
+		}),
+	}
+	_, err := client.Info(context.Background())
+	if err == nil || !strings.Contains(err.Error(), "invalid character") {
+		t.Fatalf("expected a 'invalid character' error, got %v", err)
+	}
+}
+
 func TestInfo(t *testing.T) {
 	expectedURL := "/info"
 	client := &Client{