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Source file src/mime/mediatype_test.go

Documentation: mime

  // Copyright 2010 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package mime
  
  import (
  	"reflect"
  	"testing"
  )
  
  func TestConsumeToken(t *testing.T) {
  	tests := [...][3]string{
  		{"foo bar", "foo", " bar"},
  		{"bar", "bar", ""},
  		{"", "", ""},
  		{" foo", "", " foo"},
  	}
  	for _, test := range tests {
  		token, rest := consumeToken(test[0])
  		expectedToken := test[1]
  		expectedRest := test[2]
  		if token != expectedToken {
  			t.Errorf("expected to consume token '%s', not '%s' from '%s'",
  				expectedToken, token, test[0])
  		} else if rest != expectedRest {
  			t.Errorf("expected to have left '%s', not '%s' after reading token '%s' from '%s'",
  				expectedRest, rest, token, test[0])
  		}
  	}
  }
  
  func TestConsumeValue(t *testing.T) {
  	tests := [...][3]string{
  		{"foo bar", "foo", " bar"},
  		{"bar", "bar", ""},
  		{" bar ", "", " bar "},
  		{`"My value"end`, "My value", "end"},
  		{`"My value" end`, "My value", " end"},
  		{`"\\" rest`, "\\", " rest"},
  		{`"My \" value"end`, "My \" value", "end"},
  		{`"\" rest`, "", `"\" rest`},
  	}
  	for _, test := range tests {
  		value, rest := consumeValue(test[0])
  		expectedValue := test[1]
  		expectedRest := test[2]
  		if value != expectedValue {
  			t.Errorf("expected to consume value [%s], not [%s] from [%s]",
  				expectedValue, value, test[0])
  		} else if rest != expectedRest {
  			t.Errorf("expected to have left [%s], not [%s] after reading value [%s] from [%s]",
  				expectedRest, rest, value, test[0])
  		}
  	}
  }
  
  func TestConsumeMediaParam(t *testing.T) {
  	tests := [...][4]string{
  		{" ; foo=bar", "foo", "bar", ""},
  		{"; foo=bar", "foo", "bar", ""},
  		{";foo=bar", "foo", "bar", ""},
  		{";FOO=bar", "foo", "bar", ""},
  		{`;foo="bar"`, "foo", "bar", ""},
  		{`;foo="bar"; `, "foo", "bar", "; "},
  		{`;foo="bar"; foo=baz`, "foo", "bar", "; foo=baz"},
  		{` ; boundary=----CUT;`, "boundary", "----CUT", ";"},
  		{` ; key=value;  blah="value";name="foo" `, "key", "value", `;  blah="value";name="foo" `},
  		{`;  blah="value";name="foo" `, "blah", "value", `;name="foo" `},
  		{`;name="foo" `, "name", "foo", ` `},
  	}
  	for _, test := range tests {
  		param, value, rest := consumeMediaParam(test[0])
  		expectedParam := test[1]
  		expectedValue := test[2]
  		expectedRest := test[3]
  		if param != expectedParam {
  			t.Errorf("expected to consume param [%s], not [%s] from [%s]",
  				expectedParam, param, test[0])
  		} else if value != expectedValue {
  			t.Errorf("expected to consume value [%s], not [%s] from [%s]",
  				expectedValue, value, test[0])
  		} else if rest != expectedRest {
  			t.Errorf("expected to have left [%s], not [%s] after reading [%s/%s] from [%s]",
  				expectedRest, rest, param, value, test[0])
  		}
  	}
  }
  
  type mediaTypeTest struct {
  	in string
  	t  string
  	p  map[string]string
  }
  
  func TestParseMediaType(t *testing.T) {
  	// Convenience map initializer
  	m := func(s ...string) map[string]string {
  		sm := make(map[string]string)
  		for i := 0; i < len(s); i += 2 {
  			sm[s[i]] = s[i+1]
  		}
  		return sm
  	}
  
  	nameFoo := map[string]string{"name": "foo"}
  	tests := []mediaTypeTest{
  		{`form-data; name="foo"`, "form-data", nameFoo},
  		{` form-data ; name=foo`, "form-data", nameFoo},
  		{`FORM-DATA;name="foo"`, "form-data", nameFoo},
  		{` FORM-DATA ; name="foo"`, "form-data", nameFoo},
  		{` FORM-DATA ; name="foo"`, "form-data", nameFoo},
  
  		{`form-data; key=value;  blah="value";name="foo" `,
  			"form-data",
  			m("key", "value", "blah", "value", "name", "foo")},
  
  		{`foo; key=val1; key=the-key-appears-again-which-is-bogus`,
  			"", m()},
  
  		// From RFC 2231:
  		{`application/x-stuff; title*=us-ascii'en-us'This%20is%20%2A%2A%2Afun%2A%2A%2A`,
  			"application/x-stuff",
  			m("title", "This is ***fun***")},
  
  		{`message/external-body; access-type=URL; ` +
  			`URL*0="ftp://";` +
  			`URL*1="cs.utk.edu/pub/moore/bulk-mailer/bulk-mailer.tar"`,
  			"message/external-body",
  			m("access-type", "URL",
  				"url", "ftp://cs.utk.edu/pub/moore/bulk-mailer/bulk-mailer.tar")},
  
  		{`application/x-stuff; ` +
  			`title*0*=us-ascii'en'This%20is%20even%20more%20; ` +
  			`title*1*=%2A%2A%2Afun%2A%2A%2A%20; ` +
  			`title*2="isn't it!"`,
  			"application/x-stuff",
  			m("title", "This is even more ***fun*** isn't it!")},
  
  		// Tests from http://greenbytes.de/tech/tc2231/
  		// Note: Backslash escape handling is a bit loose, like MSIE.
  		// TODO(bradfitz): add the rest of the tests from that site.
  		{`attachment; filename="f\oo.html"`,
  			"attachment",
  			m("filename", "f\\oo.html")},
  		{`attachment; filename="\"quoting\" tested.html"`,
  			"attachment",
  			m("filename", `"quoting" tested.html`)},
  		{`attachment; filename="Here's a semicolon;.html"`,
  			"attachment",
  			m("filename", "Here's a semicolon;.html")},
  		{`attachment; foo="\"\\";filename="foo.html"`,
  			"attachment",
  			m("foo", "\"\\", "filename", "foo.html")},
  		{`attachment; filename=foo.html`,
  			"attachment",
  			m("filename", "foo.html")},
  		{`attachment; filename=foo.html ;`,
  			"attachment",
  			m("filename", "foo.html")},
  		{`attachment; filename='foo.html'`,
  			"attachment",
  			m("filename", "'foo.html'")},
  		{`attachment; filename="foo-%41.html"`,
  			"attachment",
  			m("filename", "foo-%41.html")},
  		{`attachment; filename="foo-%\41.html"`,
  			"attachment",
  			m("filename", "foo-%\\41.html")},
  		{`filename=foo.html`,
  			"", m()},
  		{`x=y; filename=foo.html`,
  			"", m()},
  		{`"foo; filename=bar;baz"; filename=qux`,
  			"", m()},
  		{`inline; attachment; filename=foo.html`,
  			"", m()},
  		{`attachment; filename="foo.html".txt`,
  			"", m()},
  		{`attachment; filename="bar`,
  			"", m()},
  		{`attachment; creation-date="Wed, 12 Feb 1997 16:29:51 -0500"`,
  			"attachment",
  			m("creation-date", "Wed, 12 Feb 1997 16:29:51 -0500")},
  		{`foobar`, "foobar", m()},
  		{`attachment; filename* =UTF-8''foo-%c3%a4.html`,
  			"attachment",
  			m("filename", "foo-ä.html")},
  		{`attachment; filename*=UTF-8''A-%2541.html`,
  			"attachment",
  			m("filename", "A-%41.html")},
  		{`attachment; filename*0="foo."; filename*1="html"`,
  			"attachment",
  			m("filename", "foo.html")},
  		{`attachment; filename*0*=UTF-8''foo-%c3%a4; filename*1=".html"`,
  			"attachment",
  			m("filename", "foo-ä.html")},
  		{`attachment; filename*0="foo"; filename*01="bar"`,
  			"attachment",
  			m("filename", "foo")},
  		{`attachment; filename*0="foo"; filename*2="bar"`,
  			"attachment",
  			m("filename", "foo")},
  		{`attachment; filename*1="foo"; filename*2="bar"`,
  			"attachment", m()},
  		{`attachment; filename*1="bar"; filename*0="foo"`,
  			"attachment",
  			m("filename", "foobar")},
  		{`attachment; filename="foo-ae.html"; filename*=UTF-8''foo-%c3%a4.html`,
  			"attachment",
  			m("filename", "foo-ä.html")},
  		{`attachment; filename*=UTF-8''foo-%c3%a4.html; filename="foo-ae.html"`,
  			"attachment",
  			m("filename", "foo-ä.html")},
  
  		// Browsers also just send UTF-8 directly without RFC 2231,
  		// at least when the source page is served with UTF-8.
  		{`form-data; firstname="Брэд"; lastname="Фицпатрик"`,
  			"form-data",
  			m("firstname", "Брэд", "lastname", "Фицпатрик")},
  
  		// Empty string used to be mishandled.
  		{`foo; bar=""`, "foo", m("bar", "")},
  
  		// Microsoft browers in intranet mode do not think they need to escape \ in file name.
  		{`form-data; name="file"; filename="C:\dev\go\robots.txt"`, "form-data", m("name", "file", "filename", `C:\dev\go\robots.txt`)},
  	}
  	for _, test := range tests {
  		mt, params, err := ParseMediaType(test.in)
  		if err != nil {
  			if test.t != "" {
  				t.Errorf("for input %#q, unexpected error: %v", test.in, err)
  				continue
  			}
  			continue
  		}
  		if g, e := mt, test.t; g != e {
  			t.Errorf("for input %#q, expected type %q, got %q",
  				test.in, e, g)
  			continue
  		}
  		if len(params) == 0 && len(test.p) == 0 {
  			continue
  		}
  		if !reflect.DeepEqual(params, test.p) {
  			t.Errorf("for input %#q, wrong params.\n"+
  				"expected: %#v\n"+
  				"     got: %#v",
  				test.in, test.p, params)
  		}
  	}
  }
  
  type badMediaTypeTest struct {
  	in  string
  	mt  string
  	err string
  }
  
  var badMediaTypeTests = []badMediaTypeTest{
  	{"bogus ;=========", "bogus", "mime: invalid media parameter"},
  	// The following example is from real email delivered by gmail (error: missing semicolon)
  	// and it is there to check behavior described in #19498
  	{"application/pdf; x-mac-type=\"3F3F3F3F\"; x-mac-creator=\"3F3F3F3F\" name=\"a.pdf\";",
  		"application/pdf", "mime: invalid media parameter"},
  	{"bogus/<script>alert</script>", "", "mime: expected token after slash"},
  	{"bogus/bogus<script>alert</script>", "", "mime: unexpected content after media subtype"},
  }
  
  func TestParseMediaTypeBogus(t *testing.T) {
  	for _, tt := range badMediaTypeTests {
  		mt, params, err := ParseMediaType(tt.in)
  		if err == nil {
  			t.Errorf("ParseMediaType(%q) = nil error; want parse error", tt.in)
  			continue
  		}
  		if err.Error() != tt.err {
  			t.Errorf("ParseMediaType(%q) = err %q; want %q", tt.in, err.Error(), tt.err)
  		}
  		if params != nil {
  			t.Errorf("ParseMediaType(%q): got non-nil params on error", tt.in)
  		}
  		if err != ErrInvalidMediaParameter && mt != "" {
  			t.Errorf("ParseMediaType(%q): got unexpected non-empty media type string", tt.in)
  		}
  		if err == ErrInvalidMediaParameter && mt != tt.mt {
  			t.Errorf("ParseMediaType(%q): in case of invalid parameters: expected type %q, got %q", tt.in, tt.mt, mt)
  		}
  	}
  }
  
  type formatTest struct {
  	typ    string
  	params map[string]string
  	want   string
  }
  
  var formatTests = []formatTest{
  	{"noslash", map[string]string{"X": "Y"}, "noslash; x=Y"}, // e.g. Content-Disposition values (RFC 2183); issue 11289
  	{"foo bar/baz", nil, ""},
  	{"foo/bar baz", nil, ""},
  	{"foo/BAR", nil, "foo/bar"},
  	{"foo/BAR", map[string]string{"X": "Y"}, "foo/bar; x=Y"},
  	{"foo/BAR", map[string]string{"space": "With space"}, `foo/bar; space="With space"`},
  	{"foo/BAR", map[string]string{"quote": `With "quote`}, `foo/bar; quote="With \"quote"`},
  	{"foo/BAR", map[string]string{"bslash": `With \backslash`}, `foo/bar; bslash="With \\backslash"`},
  	{"foo/BAR", map[string]string{"both": `With \backslash and "quote`}, `foo/bar; both="With \\backslash and \"quote"`},
  	{"foo/BAR", map[string]string{"": "empty attribute"}, ""},
  	{"foo/BAR", map[string]string{"bad attribute": "baz"}, ""},
  	{"foo/BAR", map[string]string{"nonascii": "not an ascii character: ä"}, ""},
  	{"foo/bar", map[string]string{"a": "av", "b": "bv", "c": "cv"}, "foo/bar; a=av; b=bv; c=cv"},
  	{"foo/bar", map[string]string{"0": "'", "9": "'"}, "foo/bar; 0='; 9='"},
  	{"foo", map[string]string{"bar": ""}, `foo; bar=""`},
  }
  
  func TestFormatMediaType(t *testing.T) {
  	for i, tt := range formatTests {
  		got := FormatMediaType(tt.typ, tt.params)
  		if got != tt.want {
  			t.Errorf("%d. FormatMediaType(%q, %v) = %q; want %q", i, tt.typ, tt.params, got, tt.want)
  		}
  	}
  }
  

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