Custom Error Pages (#1675)

* custom error pages

integration/error_pages_test.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"net/http"
+	"os"
+	"os/exec"
+	"time"
+
+	"github.com/containous/traefik/integration/try"
+	"github.com/go-check/check"
+	checker "github.com/vdemeester/shakers"
+)
+
+// ErrorPagesSuite test suites (using libcompose)
+type ErrorPagesSuite struct{ BaseSuite }
+
+func (ep *ErrorPagesSuite) SetUpSuite(c *check.C) {
+	ep.createComposeProject(c, "error_pages")
+	ep.composeProject.Start(c)
+}
+
+func (ep *ErrorPagesSuite) TestSimpleConfiguration(c *check.C) {
+
+	errorPageHost := ep.composeProject.Container(c, "nginx2").NetworkSettings.IPAddress
+	backendHost := ep.composeProject.Container(c, "nginx1").NetworkSettings.IPAddress
+
+	file := ep.adaptFile(c, "fixtures/error_pages/simple.toml", struct {
+		Server1 string
+		Server2 string
+	}{backendHost, errorPageHost})
+	defer os.Remove(file)
+	cmd := exec.Command(traefikBinary, "--configFile="+file)
+
+	err := cmd.Start()
+	c.Assert(err, checker.IsNil)
+	defer cmd.Process.Kill()
+
+	frontendReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:80", nil)
+	c.Assert(err, checker.IsNil)
+	frontendReq.Host = "test.local"
+
+	err = try.Request(frontendReq, 2*time.Second, try.BodyContains("nginx"))
+	c.Assert(err, checker.IsNil)
+}
+
+func (ep *ErrorPagesSuite) TestErrorPage(c *check.C) {
+
+	errorPageHost := ep.composeProject.Container(c, "nginx2").NetworkSettings.IPAddress
+	backendHost := ep.composeProject.Container(c, "nginx1").NetworkSettings.IPAddress
+
+	//error.toml contains a mis-configuration of the backend host
+	file := ep.adaptFile(c, "fixtures/error_pages/error.toml", struct {
+		Server1 string
+		Server2 string
+	}{backendHost, errorPageHost})
+	defer os.Remove(file)
+	cmd := exec.Command(traefikBinary, "--configFile="+file)
+
+	err := cmd.Start()
+	c.Assert(err, checker.IsNil)
+	defer cmd.Process.Kill()
+
+	frontendReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:80", nil)
+	c.Assert(err, checker.IsNil)
+	frontendReq.Host = "test.local"
+
+	err = try.Request(frontendReq, 2*time.Second, try.BodyContains("An error occurred."))
+	c.Assert(err, checker.IsNil)
+}