chore(all): move sub-packages to internal/provider

internal/provider/ivpn/updater/servers_test.go

@@ -0,0 +1,141 @@
+package ivpn
+
+import (
+	"context"
+	"errors"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	"github.com/qdm12/gluetun/internal/constants/vpn"
+	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/updater/resolver"
+	"github.com/qdm12/gluetun/internal/updater/resolver/mock_resolver"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_GetServers(t *testing.T) {
+	t.Parallel()
+
+	testCases := map[string]struct {
+		// Inputs
+		minServers int
+
+		// From API
+		responseBody   string
+		responseStatus int
+
+		// Resolution
+		expectResolve   bool
+		hostsToResolve  []string
+		resolveSettings resolver.ParallelSettings
+		hostToIPs       map[string][]net.IP
+		resolveWarnings []string
+		resolveErr      error
+
+		// Output
+		servers  []models.Server
+		warnings []string
+		err      error
+	}{
+		"http response error": {
+			responseStatus: http.StatusNoContent,
+			err:            errors.New("failed fetching API: HTTP status code not OK: 204 No Content"),
+		},
+		"resolve error": {
+			responseBody: `{"servers":[
+				{"hostnames":{"openvpn":"hosta"}}
+			]}`,
+			responseStatus:  http.StatusOK,
+			expectResolve:   true,
+			hostsToResolve:  []string{"hosta"},
+			resolveSettings: getResolveSettings(0),
+			resolveWarnings: []string{"resolve warning"},
+			resolveErr:      errors.New("dummy"),
+			warnings:        []string{"resolve warning"},
+			err:             errors.New("dummy"),
+		},
+		"not enough servers": {
+			minServers: 2,
+			responseBody: `{"servers":[
+				{"hostnames":{"openvpn":"hosta"}}
+			]}`,
+			responseStatus: http.StatusOK,
+			err:            errors.New("not enough servers found: 1 and expected at least 2"),
+		},
+		"success": {
+			minServers: 1,
+			responseBody: `{"servers":[
+				{"country":"Country1","city":"City A","hostnames":{"openvpn":"hosta"}},
+				{"country":"Country2","city":"City B","hostnames":{"openvpn":"hostb"},"wg_public_key":"xyz"},
+				{"country":"Country3","city":"City C","hostnames":{"wireguard":"hostc"},"wg_public_key":"xyz"}
+			]}`,
+			responseStatus:  http.StatusOK,
+			expectResolve:   true,
+			hostsToResolve:  []string{"hosta", "hostb", "hostc"},
+			resolveSettings: getResolveSettings(1),
+			hostToIPs: map[string][]net.IP{
+				"hosta": {{1, 1, 1, 1}, {2, 2, 2, 2}},
+				"hostb": {{3, 3, 3, 3}, {4, 4, 4, 4}},
+				"hostc": {{5, 5, 5, 5}, {6, 6, 6, 6}},
+			},
+			resolveWarnings: []string{"resolve warning"},
+			servers: []models.Server{
+				{VPN: vpn.OpenVPN, Country: "Country1",
+					City: "City A", Hostname: "hosta", TCP: true, UDP: true,
+					IPs: []net.IP{{1, 1, 1, 1}, {2, 2, 2, 2}}},
+				{VPN: vpn.OpenVPN, Country: "Country2",
+					City: "City B", Hostname: "hostb", TCP: true, UDP: true,
+					IPs: []net.IP{{3, 3, 3, 3}, {4, 4, 4, 4}}},
+				{VPN: vpn.Wireguard,
+					Country: "Country3", City: "City C",
+					Hostname: "hostc", UDP: true,
+					WgPubKey: "xyz",
+					IPs:      []net.IP{{5, 5, 5, 5}, {6, 6, 6, 6}}},
+			},
+			warnings: []string{"resolve warning"},
+		},
+	}
+	for name, testCase := range testCases {
+		testCase := testCase
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+			ctrl := gomock.NewController(t)
+
+			ctx := context.Background()
+
+			client := &http.Client{
+				Transport: roundTripFunc(func(r *http.Request) (*http.Response, error) {
+					assert.Equal(t, http.MethodGet, r.Method)
+					assert.Equal(t, r.URL.String(), "https://api.ivpn.net/v4/servers/stats")
+					return &http.Response{
+						StatusCode: testCase.responseStatus,
+						Status:     http.StatusText(testCase.responseStatus),
+						Body:       ioutil.NopCloser(strings.NewReader(testCase.responseBody)),
+					}, nil
+				}),
+			}
+
+			presolver := mock_resolver.NewMockParallel(ctrl)
+			if testCase.expectResolve {
+				presolver.EXPECT().Resolve(ctx, testCase.hostsToResolve, testCase.resolveSettings).
+					Return(testCase.hostToIPs, testCase.resolveWarnings, testCase.resolveErr)
+			}
+
+			servers, warnings, err := GetServers(ctx, client, presolver, testCase.minServers)
+
+			assert.Equal(t, testCase.servers, servers)
+			assert.Equal(t, testCase.warnings, warnings)
+			if testCase.err != nil {
+				require.Error(t, err)
+				assert.Equal(t, testCase.err.Error(), err.Error())
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}