// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2013 The Go Authors.  All rights reserved.
// https://github.com/golang/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package generator

import (
	"testing"

	"github.com/golang/protobuf/protoc-gen-go/descriptor"
)

func TestCamelCase(t *testing.T) {
	tests := []struct {
		in, want string
	}{
		{"one", "One"},
		{"one_two", "OneTwo"},
		{"_my_field_name_2", "XMyFieldName_2"},
		{"Something_Capped", "Something_Capped"},
		{"my_Name", "My_Name"},
		{"OneTwo", "OneTwo"},
		{"_", "X"},
		{"_a_", "XA_"},
	}
	for _, tc := range tests {
		if got := CamelCase(tc.in); got != tc.want {
			t.Errorf("CamelCase(%q) = %q, want %q", tc.in, got, tc.want)
		}
	}
}

func TestGoPackageOption(t *testing.T) {
	tests := []struct {
		in           string
		impPath, pkg string
		ok           bool
	}{
		{"", "", "", false},
		{"foo", "", "foo", true},
		{"github.com/golang/bar", "github.com/golang/bar", "bar", true},
		{"github.com/golang/bar;baz", "github.com/golang/bar", "baz", true},
	}
	for _, tc := range tests {
		d := &FileDescriptor{
			FileDescriptorProto: &descriptor.FileDescriptorProto{
				Options: &descriptor.FileOptions{
					GoPackage: &tc.in,
				},
			},
		}
		impPath, pkg, ok := d.goPackageOption()
		if impPath != tc.impPath || pkg != tc.pkg || ok != tc.ok {
			t.Errorf("go_package = %q => (%q, %q, %t), want (%q, %q, %t)", tc.in,
				impPath, pkg, ok, tc.impPath, tc.pkg, tc.ok)
		}
	}
}