Add internal provider

Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>

pkg/provider/traefik/internal_test.go

@@ -0,0 +1,199 @@
+package traefik
+
+import (
+	"encoding/json"
+	"flag"
+	"io/ioutil"
+	"path/filepath"
+	"testing"
+
+	"github.com/containous/traefik/v2/pkg/config/static"
+	"github.com/containous/traefik/v2/pkg/ping"
+	"github.com/containous/traefik/v2/pkg/provider/rest"
+	"github.com/containous/traefik/v2/pkg/types"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+var updateExpected = flag.Bool("update_expected", false, "Update expected files in fixtures")
+
+func Test_createConfiguration(t *testing.T) {
+	testCases := []struct {
+		desc      string
+		staticCfg static.Configuration
+	}{
+		{
+			desc: "full_configuration.json",
+			staticCfg: static.Configuration{
+				API: &static.API{
+					Insecure:  true,
+					Dashboard: true,
+				},
+				Ping: &ping.Handler{
+					EntryPoint:    "test",
+					ManualRouting: false,
+				},
+				Providers: &static.Providers{
+					Rest: &rest.Provider{
+						Insecure: true,
+					},
+				},
+				Metrics: &types.Metrics{
+					Prometheus: &types.Prometheus{
+						EntryPoint:    "test",
+						ManualRouting: false,
+					},
+				},
+			},
+		},
+		{
+			desc: "full_configuration_secure.json",
+			staticCfg: static.Configuration{
+				API: &static.API{
+					Insecure:  false,
+					Dashboard: true,
+				},
+				Ping: &ping.Handler{
+					EntryPoint:    "test",
+					ManualRouting: true,
+				},
+				Providers: &static.Providers{
+					Rest: &rest.Provider{
+						Insecure: false,
+					},
+				},
+				Metrics: &types.Metrics{
+					Prometheus: &types.Prometheus{
+						EntryPoint:    "test",
+						ManualRouting: true,
+					},
+				},
+			},
+		},
+		{
+			desc: "api_insecure_with_dashboard.json",
+			staticCfg: static.Configuration{
+				API: &static.API{
+					Insecure:  true,
+					Dashboard: true,
+				},
+			},
+		},
+		{
+			desc: "api_insecure_without_dashboard.json",
+			staticCfg: static.Configuration{
+				API: &static.API{
+					Insecure:  true,
+					Dashboard: false,
+				},
+			},
+		},
+		{
+			desc: "api_secure_with_dashboard.json",
+			staticCfg: static.Configuration{
+				API: &static.API{
+					Insecure:  false,
+					Dashboard: true,
+				},
+			},
+		},
+		{
+			desc: "api_secure_without_dashboard.json",
+			staticCfg: static.Configuration{
+				API: &static.API{
+					Insecure:  false,
+					Dashboard: false,
+				},
+			},
+		},
+		{
+			desc: "ping_simple.json",
+			staticCfg: static.Configuration{
+				Ping: &ping.Handler{
+					EntryPoint:    "test",
+					ManualRouting: false,
+				},
+			},
+		},
+		{
+			desc: "ping_custom.json",
+			staticCfg: static.Configuration{
+				Ping: &ping.Handler{
+					EntryPoint:    "test",
+					ManualRouting: true,
+				},
+			},
+		},
+		{
+			desc: "rest_insecure.json",
+			staticCfg: static.Configuration{
+				Providers: &static.Providers{
+					Rest: &rest.Provider{
+						Insecure: true,
+					},
+				},
+			},
+		},
+		{
+			desc: "rest_secure.json",
+			staticCfg: static.Configuration{
+				Providers: &static.Providers{
+					Rest: &rest.Provider{
+						Insecure: false,
+					},
+				},
+			},
+		},
+		{
+			desc: "prometheus_simple.json",
+			staticCfg: static.Configuration{
+				Metrics: &types.Metrics{
+					Prometheus: &types.Prometheus{
+						EntryPoint:    "test",
+						ManualRouting: false,
+					},
+				},
+			},
+		},
+		{
+			desc: "prometheus_custom.json",
+			staticCfg: static.Configuration{
+				Metrics: &types.Metrics{
+					Prometheus: &types.Prometheus{
+						EntryPoint:    "test",
+						ManualRouting: true,
+					},
+				},
+			},
+		},
+	}
+
+	for _, test := range testCases {
+		test := test
+		t.Run(test.desc, func(t *testing.T) {
+			t.Parallel()
+
+			provider := Provider{staticCfg: test.staticCfg}
+
+			cfg := provider.createConfiguration()
+
+			filename := filepath.Join("fixtures", test.desc)
+
+			if *updateExpected {
+				newJSON, err := json.MarshalIndent(cfg, "", "  ")
+				require.NoError(t, err)
+
+				err = ioutil.WriteFile(filename, newJSON, 0644)
+				require.NoError(t, err)
+			}
+
+			expectedJSON, err := ioutil.ReadFile(filename)
+			require.NoError(t, err)
+
+			actualJSON, err := json.MarshalIndent(cfg, "", "  ")
+			require.NoError(t, err)
+
+			assert.JSONEq(t, string(expectedJSON), string(actualJSON))
+		})
+	}
+}