You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: gobuilds_test.go
    path of file: ./repos/ko/pkg/build
    
    the code of the file until where you have to start completion: // Copyright 2021 ko Build Authors All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain 
    
func Test_relativePath(t *testing.T) {
	tests := []struct {
		description string
		baseDir     string
		importpath  string
		want        string
		wantErr     bool
	}{
		{
			description: "all empty string",
		},
		{
			description: "all current directory",
			baseDir:     ".",
			importpath:  ".",
			want:        ".",
		},
		{
			description: "fully qualified import path without ko prefix",
			baseDir:     "also-any-value-because-it-is-ignored",
			importpath:  "example.com/app/cmd/foo",
			want:        "example.com/app/cmd/foo",
		},
		{
			description: "fully qualified import path with ko prefix",
			baseDir:     "also-any-value-because-it-is-ignored",
			importpath:  "ko://example.com/app/cmd/foo",
			want:        "ko://example.com/app/cmd/foo",
		},
		{
			description: "importpath is local subdirectory",
			baseDir:     "foo",
			importpath:  "./foo/bar",
			want:        "./bar",
		},
		{
			description: "importpath is same local directory",
			baseDir:     "foo/bar",
			importpath:  "./foo/bar",
			want:        ".",
		},
		{
			description: "importpath is not subdirectory or same local directory",
			baseDir:     "foo",
			importpath:  "./bar",
			wantErr:     true,
		},
	}
	for _, test := range tests {
		t.Run(test.description, func(t *testing.T) {
			got, err := relativePath(test.baseDir, test.importpath)
			if (err != nil) != test.wantErr {
				t.Errorf("relativePath() error = %v, wantErr %v", err, test.wantErr)
				return
			}
			if got != test.want {
				t.Errorf("relativePath() got = %v, want %v", got, test.want)
			}
		})
	}
}