test struct that doesn't implement from_toml and to_toml

vlib/toml/tests/encode_and_decode_test.v

@@ -1,18 +1,40 @@
 import toml
 
-enum JobTitle {
-	manager
-	executive
-	worker
+enum Rank {
+	low
+	medium
+	high
+}
+
+struct Planet {
+	name       string
+	population u64
+	size       f64
+	avg_temp   int
+	has_water  bool
+	rank       Rank
 }
 
 struct Employee {
-pub mut:
+mut:
 	name     string
 	age      int
 	salary   f32
 	is_human bool
-	title    JobTitle
+	rank     Rank
+}
+
+fn test_encode_and_decode() {
+	p := Planet{'Mars', 0, 144.8, -81, true, .high}
+	s := 'name = "Mars"
+population = 0
+size = 144.8
+avg_temp = -81
+has_water = true
+rank = 2'
+
+	assert toml.encode[Planet](p) == s
+	assert toml.decode[Planet](s)! == p
 }
 
 pub fn (e Employee) to_toml() string {
@@ -21,7 +43,7 @@ pub fn (e Employee) to_toml() string {
 	mp['age'] = toml.Any(e.age)
 	mp['salary'] = toml.Any(e.salary)
 	mp['is_human'] = toml.Any(e.is_human)
-	mp['title'] = toml.Any(int(e.title))
+	mp['rank'] = toml.Any(int(e.rank))
 	return mp.to_toml()
 }
 
@@ -31,18 +53,18 @@ pub fn (mut e Employee) from_toml(any toml.Any) {
 	e.age = mp['age'] or { toml.Any(0) }.int()
 	e.salary = mp['salary'] or { toml.Any(0) }.f32()
 	e.is_human = mp['is_human'] or { toml.Any(false) }.bool()
-	e.title = unsafe { JobTitle(mp['title'] or { toml.Any(0) }.int()) }
+	e.rank = unsafe { Rank(mp['rank'] or { toml.Any(0) }.int()) }
 }
 
-fn test_encode_and_decode() {
-	x := Employee{'Peter', 28, 95000.5, true, .worker}
+fn test_custom_encode_and_decode() {
+	x := Employee{'Peter', 28, 95000.5, true, .medium}
 	s := toml.encode[Employee](x)
 	eprintln('Employee x: ${s}')
 	assert s == r'name = "Peter"
 age = 28
 salary = 95000.5
 is_human = true
-title = 2'
+rank = 1'
 
 	y := toml.decode[Employee](s) or {
 		println(err)
@@ -54,5 +76,5 @@ title = 2'
 	assert y.age == 28
 	assert y.salary == 95000.5
 	assert y.is_human == true
-	assert y.title == .worker
+	assert y.rank == .medium
 }