v/vlib/v/tests/string_interpolation_variad...

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V

// This file tests whether V can generate a convenience default .str() method
// for var args of a custom type, when the developer has NOT defined one.
// Although similar to string_interpolation_struct_test.v, they should not be
// merged.
struct Man {
name string
age int
interests []string
}
fn my_variadic_function(x ...Man) string {
return '$x' // this interpolation should generate .str() methods for Man
}
fn test_vargs_string_interpolation() {
man := Man{'Me', 38, ['programming', 'reading', 'hiking']}
superman := Man{'Superman', 30, ['flying', 'fighting evil', 'being nice']}
results := my_variadic_function(superman, man)
assert results.contains('Man{')
//
assert results.contains("name: 'Superman'")
assert results.contains('age: 30')
assert results.contains('}, Man{')
//
assert results.contains("interests: ['programming'")
assert results.contains("name: 'Me'")
//
assert results.contains('}]')
//
println(results)
}
fn variadic_int(x ...int) string {
return '$x'
}
fn variadic_bool(x ...bool) string {
return '$x'
}
fn test_variadic_interpolation() {
assert variadic_int(3, 2, 1) == '[3, 2, 1]'
assert variadic_bool(true, false, true) == '[true, false, true]'
}