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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package main
import (
"testing"
"github.com/google/go-cmp/cmp"
)
func TestEnv(t *testing.T) {
var (
init = map[string]string{
"FOO": "bar",
}
wasSet = map[string]string{}
wasUnset = map[string]bool{}
setenv = func(k, v string) error {
wasSet[k] = v
return nil
}
unsetenv = func(k string) error {
wasUnset[k] = true
return nil
}
)
env := newEnvironmentForTest(init, setenv, unsetenv)
if got, want := env.Get("FOO", ""), "bar"; got != want {
t.Errorf(`env.Get("FOO") = %q, want %q`, got, want)
}
if got, want := env.IsSet("FOO"), true; got != want {
t.Errorf(`env.IsSet("FOO") = %v, want %v`, got, want)
}
if got, want := env.Get("BAR", "defaultVal"), "defaultVal"; got != want {
t.Errorf(`env.Get("BAR") = %q, want %q`, got, want)
}
if got, want := env.IsSet("BAR"), false; got != want {
t.Errorf(`env.IsSet("BAR") = %v, want %v`, got, want)
}
env.Set("BAR", "quux")
if got, want := env.Get("BAR", ""), "quux"; got != want {
t.Errorf(`env.Get("BAR") = %q, want %q`, got, want)
}
if got, want := env.IsSet("BAR"), true; got != want {
t.Errorf(`env.IsSet("BAR") = %v, want %v`, got, want)
}
diff := "BAR=quux (was <nil>)"
if got := env.Diff(); got != diff {
t.Errorf("env.Diff() = %q, want %q", got, diff)
}
env.Set("FOO", "foo2")
if got, want := env.Get("FOO", ""), "foo2"; got != want {
t.Errorf(`env.Get("FOO") = %q, want %q`, got, want)
}
if got, want := env.IsSet("FOO"), true; got != want {
t.Errorf(`env.IsSet("FOO") = %v, want %v`, got, want)
}
diff = `BAR=quux (was <nil>)
FOO=foo2 (was bar)`
if got := env.Diff(); got != diff {
t.Errorf("env.Diff() = %q, want %q", got, diff)
}
env.Unset("FOO")
if got, want := env.Get("FOO", "default"), "default"; got != want {
t.Errorf(`env.Get("FOO") = %q, want %q`, got, want)
}
if got, want := env.IsSet("FOO"), false; got != want {
t.Errorf(`env.IsSet("FOO") = %v, want %v`, got, want)
}
diff = `BAR=quux (was <nil>)
FOO=<nil> (was bar)`
if got := env.Diff(); got != diff {
t.Errorf("env.Diff() = %q, want %q", got, diff)
}
if err := env.Apply(); err != nil {
t.Fatalf("env.Apply() failed: %v", err)
}
wantSet := map[string]string{"BAR": "quux"}
wantUnset := map[string]bool{"FOO": true}
if diff := cmp.Diff(wasSet, wantSet); diff != "" {
t.Errorf("env.Apply didn't set as expected (-got+want):\n%s", diff)
}
if diff := cmp.Diff(wasUnset, wantUnset); diff != "" {
t.Errorf("env.Apply didn't unset as expected (-got+want):\n%s", diff)
}
}
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