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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package pull

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func Test_expandDefaultMergeMessage(t *testing.T) {
	type args struct {
		template string
		vars     map[string]string
	}
	tests := []struct {
		name     string
		args     args
		want     string
		wantBody string
	}{
		{
			name: "single line",
			args: args{
				template: "Merge ${PullRequestTitle}",
				vars: map[string]string{
					"PullRequestTitle":       "PullRequestTitle",
					"PullRequestDescription": "Pull\nRequest\nDescription\n",
				},
			},
			want:     "Merge PullRequestTitle",
			wantBody: "",
		},
		{
			name: "multiple lines",
			args: args{
				template: "Merge ${PullRequestTitle}\nDescription:\n\n${PullRequestDescription}\n",
				vars: map[string]string{
					"PullRequestTitle":       "PullRequestTitle",
					"PullRequestDescription": "Pull\nRequest\nDescription\n",
				},
			},
			want:     "Merge PullRequestTitle",
			wantBody: "Description:\n\nPull\nRequest\nDescription\n",
		},
		{
			name: "leading newlines",
			args: args{
				template: "\n\n\nMerge ${PullRequestTitle}\n\n\nDescription:\n\n${PullRequestDescription}\n",
				vars: map[string]string{
					"PullRequestTitle":       "PullRequestTitle",
					"PullRequestDescription": "Pull\nRequest\nDescription\n",
				},
			},
			want:     "Merge PullRequestTitle",
			wantBody: "Description:\n\nPull\nRequest\nDescription\n",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, got1 := expandDefaultMergeMessage(tt.args.template, tt.args.vars)
			assert.Equalf(t, tt.want, got, "expandDefaultMergeMessage(%v, %v)", tt.args.template, tt.args.vars)
			assert.Equalf(t, tt.wantBody, got1, "expandDefaultMergeMessage(%v, %v)", tt.args.template, tt.args.vars)
		})
	}
}