name_test.go

Documentation: github.com/gogo/protobuf/protoc-gen-gogo/generator

     1  // Go support for Protocol Buffers - Google's data interchange format
     2  //
     3  // Copyright 2013 The Go Authors.  All rights reserved.
     4  // https://github.com/golang/protobuf
     5  //
     6  // Redistribution and use in source and binary forms, with or without
     7  // modification, are permitted provided that the following conditions are
     8  // met:
     9  //
    10  //     * Redistributions of source code must retain the above copyright
    11  // notice, this list of conditions and the following disclaimer.
    12  //     * Redistributions in binary form must reproduce the above
    13  // copyright notice, this list of conditions and the following disclaimer
    14  // in the documentation and/or other materials provided with the
    15  // distribution.
    16  //     * Neither the name of Google Inc. nor the names of its
    17  // contributors may be used to endorse or promote products derived from
    18  // this software without specific prior written permission.
    19  //
    20  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    21  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    22  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    23  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    24  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    25  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    26  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    27  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    28  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    29  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    30  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    31  
    32  package generator
    33  
    34  import (
    35  	"testing"
    36  
    37  	"github.com/gogo/protobuf/protoc-gen-gogo/descriptor"
    38  )
    39  
    40  func TestCamelCase(t *testing.T) {
    41  	tests := []struct {
    42  		in, want string
    43  	}{
    44  		{"one", "One"},
    45  		{"one_two", "OneTwo"},
    46  		{"_my_field_name_2", "XMyFieldName_2"},
    47  		{"Something_Capped", "Something_Capped"},
    48  		{"my_Name", "My_Name"},
    49  		{"OneTwo", "OneTwo"},
    50  		{"_", "X"},
    51  		{"_a_", "XA_"},
    52  	}
    53  	for _, tc := range tests {
    54  		if got := CamelCase(tc.in); got != tc.want {
    55  			t.Errorf("CamelCase(%q) = %q, want %q", tc.in, got, tc.want)
    56  		}
    57  	}
    58  }
    59  
    60  func TestGoPackageOption(t *testing.T) {
    61  	tests := []struct {
    62  		in      string
    63  		impPath GoImportPath
    64  		pkg     GoPackageName
    65  		ok      bool
    66  	}{
    67  		{"", "", "", false},
    68  		{"foo", "", "foo", true},
    69  		{"github.com/golang/bar", "github.com/golang/bar", "bar", true},
    70  		{"github.com/golang/bar;baz", "github.com/golang/bar", "baz", true},
    71  		{"github.com/golang/string", "github.com/golang/string", "string", true},
    72  	}
    73  	for _, tc := range tests {
    74  		d := &FileDescriptor{
    75  			FileDescriptorProto: &descriptor.FileDescriptorProto{
    76  				Options: &descriptor.FileOptions{
    77  					GoPackage: &tc.in,
    78  				},
    79  			},
    80  		}
    81  		impPath, pkg, ok := d.goPackageOption()
    82  		if impPath != tc.impPath || pkg != tc.pkg || ok != tc.ok {
    83  			t.Errorf("go_package = %q => (%q, %q, %t), want (%q, %q, %t)", tc.in,
    84  				impPath, pkg, ok, tc.impPath, tc.pkg, tc.ok)
    85  		}
    86  	}
    87  }
    88  
    89  func TestPackageNames(t *testing.T) {
    90  	g := New()
    91  	g.packageNames = make(map[GoImportPath]GoPackageName)
    92  	g.usedPackageNames = make(map[GoPackageName]bool)
    93  	for _, test := range []struct {
    94  		importPath GoImportPath
    95  		want       GoPackageName
    96  	}{
    97  		{"github.com/golang/foo", "foo"},
    98  		{"github.com/golang/second/package/named/foo", "foo1"},
    99  		{"github.com/golang/third/package/named/foo", "foo2"},
   100  		{"github.com/golang/conflicts/with/predeclared/ident/string", "string1"},
   101  	} {
   102  		if got := g.GoPackageName(test.importPath); got != test.want {
   103  			t.Errorf("GoPackageName(%v) = %v, want %v", test.importPath, got, test.want)
   104  		}
   105  	}
   106  }
   107  
   108  func TestUnescape(t *testing.T) {
   109  	tests := []struct {
   110  		in  string
   111  		out string
   112  	}{
   113  		// successful cases, including all kinds of escapes
   114  		{"", ""},
   115  		{"foo bar baz frob nitz", "foo bar baz frob nitz"},
   116  		{`\000\001\002\003\004\005\006\007`, string([]byte{0, 1, 2, 3, 4, 5, 6, 7})},
   117  		{`\a\b\f\n\r\t\v\\\?\'\"`, string([]byte{'\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '?', '\'', '"'})},
   118  		{`\x10\x20\x30\x40\x50\x60\x70\x80`, string([]byte{16, 32, 48, 64, 80, 96, 112, 128})},
   119  		// variable length octal escapes
   120  		{`\0\018\222\377\3\04\005\6\07`, string([]byte{0, 1, '8', 0222, 255, 3, 4, 5, 6, 7})},
   121  		// malformed escape sequences left as is
   122  		{"foo \\g bar", "foo \\g bar"},
   123  		{"foo \\xg0 bar", "foo \\xg0 bar"},
   124  		{"\\", "\\"},
   125  		{"\\x", "\\x"},
   126  		{"\\xf", "\\xf"},
   127  		{"\\777", "\\777"}, // overflows byte
   128  	}
   129  	for _, tc := range tests {
   130  		s := unescape(tc.in)
   131  		if s != tc.out {
   132  			t.Errorf("doUnescape(%q) = %q; should have been %q", tc.in, s, tc.out)
   133  		}
   134  	}
   135  }
   136
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