Make CoreDNS a server type plugin for Caddy (#220)

* Make CoreDNS a server type plugin for Caddy

Remove code we don't need and port all middleware over. Fix all tests
and rework the documentation.

Also make `go generate` build a caddy binary which we then copy into
our directory. This means `go build`-builds remain working as-is.

And new etc instances in each etcd test for better isolation.
Fix more tests and rework test.Server with the newer support Caddy offers.

Fix Makefile to support new mode of operation.

1 files changed, 0 insertions, 234 deletions

diff --git a/core/setup/rewrite_test.go b/core/setup/rewrite_test.go
deleted file mode 100644
index 5345c4bf6..000000000
--- a/core/setup/rewrite_test.go
+++ /dev/null
@@ -1,234 +0,0 @@
-package setup
-
-/*
-func TestRewrite(t *testing.T) {
-	c := NewTestController(`rewrite /from /to`)
-
-	mid, err := Rewrite(c)
-	if err != nil {
-		t.Errorf("Expected no errors, but got: %v", err)
-	}
-	if mid == nil {
-		t.Fatal("Expected middleware, was nil instead")
-	}
-
-	handler := mid(EmptyNext)
-	myHandler, ok := handler.(rewrite.Rewrite)
-	if !ok {
-		t.Fatalf("Expected handler to be type Rewrite, got: %#v", handler)
-	}
-
-	if !SameNext(myHandler.Next, EmptyNext) {
-		t.Error("'Next' field of handler was not set properly")
-	}
-
-	if len(myHandler.Rules) != 1 {
-		t.Errorf("Expected handler to have %d rule, has %d instead", 1, len(myHandler.Rules))
-	}
-}
-
-func TestRewriteParse(t *testing.T) {
-	simpleTests := []struct {
-		input     string
-		shouldErr bool
-		expected  []rewrite.Rule
-	}{
-		{`rewrite /from /to`, false, []rewrite.Rule{
-			rewrite.SimpleRule{From: "/from", To: "/to"},
-		}},
-		{`rewrite /from /to
-		  rewrite a b`, false, []rewrite.Rule{
-			rewrite.SimpleRule{From: "/from", To: "/to"},
-			rewrite.SimpleRule{From: "a", To: "b"},
-		}},
-		{`rewrite a`, true, []rewrite.Rule{}},
-		{`rewrite`, true, []rewrite.Rule{}},
-		{`rewrite a b c`, false, []rewrite.Rule{
-			rewrite.SimpleRule{From: "a", To: "b c"},
-		}},
-	}
-
-	for i, test := range simpleTests {
-		c := NewTestController(test.input)
-		actual, err := rewriteParse(c)
-
-		if err == nil && test.shouldErr {
-			t.Errorf("Test %d didn't error, but it should have", i)
-		} else if err != nil && !test.shouldErr {
-			t.Errorf("Test %d errored, but it shouldn't have; got '%v'", i, err)
-		} else if err != nil && test.shouldErr {
-			continue
-		}
-
-		if len(actual) != len(test.expected) {
-			t.Fatalf("Test %d expected %d rules, but got %d",
-				i, len(test.expected), len(actual))
-		}
-
-		for j, e := range test.expected {
-			actualRule := actual[j].(rewrite.SimpleRule)
-			expectedRule := e.(rewrite.SimpleRule)
-
-			if actualRule.From != expectedRule.From {
-				t.Errorf("Test %d, rule %d: Expected From=%s, got %s",
-					i, j, expectedRule.From, actualRule.From)
-			}
-
-			if actualRule.To != expectedRule.To {
-				t.Errorf("Test %d, rule %d: Expected To=%s, got %s",
-					i, j, expectedRule.To, actualRule.To)
-			}
-		}
-	}
-
-	regexpTests := []struct {
-		input     string
-		shouldErr bool
-		expected  []rewrite.Rule
-	}{
-		{`rewrite {
-			r	.*
-			to	/to /index.php?
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", To: "/to /index.php?", Regexp: regexp.MustCompile(".*")},
-		}},
-		{`rewrite {
-			regexp	.*
-			to		/to
-			ext		/ html txt
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", To: "/to", Exts: []string{"/", "html", "txt"}, Regexp: regexp.MustCompile(".*")},
-		}},
-		{`rewrite /path {
-			r	rr
-			to	/dest
-		 }
-		 rewrite / {
-		 	regexp	[a-z]+
-		 	to 		/to /to2
-		 }
-		 `, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/path", To: "/dest", Regexp: regexp.MustCompile("rr")},
-			&rewrite.ComplexRule{Base: "/", To: "/to /to2", Regexp: regexp.MustCompile("[a-z]+")},
-		}},
-		{`rewrite {
-			r	.*
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite {
-
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite /`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite {
-			to	/to
-			if {path} is a
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", To: "/to", Ifs: []rewrite.If{{A: "{path}", Operator: "is", B: "a"}}},
-		}},
-		{`rewrite {
-			status 500
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite {
-			status 400
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", Status: 400},
-		}},
-		{`rewrite {
-			to /to
-			status 400
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", To: "/to", Status: 400},
-		}},
-		{`rewrite {
-			status 399
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite {
-			status 200
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", Status: 200},
-		}},
-		{`rewrite {
-			to /to
-			status 200
-		 }`, false, []rewrite.Rule{
-			&rewrite.ComplexRule{Base: "/", To: "/to", Status: 200},
-		}},
-		{`rewrite {
-			status 199
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite {
-			status 0
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-		{`rewrite {
-			to /to
-			status 0
-		 }`, true, []rewrite.Rule{
-			&rewrite.ComplexRule{},
-		}},
-	}
-
-	for i, test := range regexpTests {
-		c := NewTestController(test.input)
-		actual, err := rewriteParse(c)
-
-		if err == nil && test.shouldErr {
-			t.Errorf("Test %d didn't error, but it should have", i)
-		} else if err != nil && !test.shouldErr {
-			t.Errorf("Test %d errored, but it shouldn't have; got '%v'", i, err)
-		} else if err != nil && test.shouldErr {
-			continue
-		}
-
-		if len(actual) != len(test.expected) {
-			t.Fatalf("Test %d expected %d rules, but got %d",
-				i, len(test.expected), len(actual))
-		}
-
-		for j, e := range test.expected {
-			actualRule := actual[j].(*rewrite.ComplexRule)
-			expectedRule := e.(*rewrite.ComplexRule)
-
-			if actualRule.Base != expectedRule.Base {
-				t.Errorf("Test %d, rule %d: Expected Base=%s, got %s",
-					i, j, expectedRule.Base, actualRule.Base)
-			}
-
-			if actualRule.To != expectedRule.To {
-				t.Errorf("Test %d, rule %d: Expected To=%s, got %s",
-					i, j, expectedRule.To, actualRule.To)
-			}
-
-			if fmt.Sprint(actualRule.Exts) != fmt.Sprint(expectedRule.Exts) {
-				t.Errorf("Test %d, rule %d: Expected Ext=%v, got %v",
-					i, j, expectedRule.To, actualRule.To)
-			}
-
-			if actualRule.Regexp != nil {
-				if actualRule.String() != expectedRule.String() {
-					t.Errorf("Test %d, rule %d: Expected Pattern=%s, got %s",
-						i, j, expectedRule.String(), actualRule.String())
-				}
-			}
-
-			if fmt.Sprint(actualRule.Ifs) != fmt.Sprint(expectedRule.Ifs) {
-				t.Errorf("Test %d, rule %d: Expected Pattern=%s, got %s",
-					i, j, fmt.Sprint(expectedRule.Ifs), fmt.Sprint(actualRule.Ifs))
-			}
-
-		}
-	}
-}
-*/