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v/vlib/builtin/map_test.v

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import time
struct User {
name string
}
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struct A {
m map[string]int
users map[string]User
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}
fn (a mut A) set(key string, val int) {
a.m[key] = val
}
fn test_map() {
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mut m := map[string]int
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assert m.size == 0
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m['hi'] = 80
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m['hello'] = 101
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assert m['hi'] == 80
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assert m['hello'] == 101
assert m.size == 2
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assert 'hi' in m
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mut sum := 0
mut key_sum := ''
// Test `for in`
for key, val in m {
sum += val
key_sum += key
}
assert sum == 80 + 101
assert key_sum == 'hihello'
// Test `.keys()`
keys := m.keys()
assert keys.len == 2
assert keys[0] == 'hi'
assert keys[1] == 'hello'
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m.delete('hi')
assert m.size == 1
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assert m['hi'] == 0
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assert m.keys().len == 1
assert m.keys()[0] == 'hello'
////
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mut users := map[string]User
users['1'] = User{'Peter'}
peter := users['1']
assert peter.name == 'Peter'
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mut a := A{
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m: map[string]int
users: map[string]User
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}
a.users['Bob'] = User{'Bob'}
q := a.users['Bob']
assert q.name == 'Bob'
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a.m['one'] = 1
a.set('two', 2)
assert a.m['one'] == 1
assert a.m['two'] == 2
}
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fn test_map_init() {
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m := { 'one': 1, 'two': 2 }
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assert m['one'] == 1
assert m['two'] == 2
assert m['three'] == 0
}
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fn test_string_map() {
//m := map[string]Fn
}
fn test_large_map() {
//ticks := time.ticks()
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mut nums := map[string]int
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N := 30 * 1000
for i := 0; i < N; i++ {
key := i.str()
nums[key] = i
}
assert nums['1'] == 1
assert nums['999'] == 999
assert nums['1000000'] == 0
//println(time.ticks() - ticks)
}
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fn test_various_map_value() {
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mut m1 := map[string]int
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m1['test'] = 1
assert m1['test'] == 1
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mut m2 := map[string]string
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m2['test'] = 'test'
assert m2['test'] == 'test'
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mut m3 := map[string]i8
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m3['test'] = i8(0)
assert m3['test'] == i8(0)
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mut m4 := map[string]i16
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m4['test'] = i16(0)
assert m4['test'] == i16(0)
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mut m5 := map[string]i32
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m5['test'] = i32(0)
assert m5['test'] == i32(0)
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mut m6 := map[string]u8
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m6['test'] = u8(0)
assert m6['test'] == u8(0)
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mut m7 := map[string]u16
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m7['test'] = u16(0)
assert m7['test'] == u16(0)
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mut m8 := map[string]u32
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m8['test'] = u32(0)
assert m8['test'] == u32(0)
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mut m9 := map[string]bool
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m9['test'] = true
assert m9['test'] == true
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mut m10 := map[string]byte
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m10['test'] = byte(0)
assert m10['test'] == byte(0)
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mut m11 := map[string]f32
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m11['test'] = f32(0.0)
assert m11['test'] == f32(0.0)
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mut m12 := map[string]f64
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m12['test'] = f64(0.0)
assert m12['test'] == f64(0.0)
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mut m13 := map[string]rune
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m13['test'] = rune(0)
assert m13['test'] == rune(0)
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//mut m14 := map[string]voidptr
//m14['test'] = voidptr(0)
//assert m14['test'] == voidptr(0)
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//mut m15 := map[string]byteptr
//m15['test'] = byteptr(0)
//assert m15['test'] == byteptr(0)
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mut m16 := map[string]i64
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m16['test'] = i64(0)
assert m16['test'] == i64(0)
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mut m17 := map[string]u64
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m17['test'] = u64(0)
assert m17['test'] == u64(0)
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}
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fn test_string_arr() {
mut m := map[string][]string
m['a'] = ['one', 'two']
assert m['a'].len == 2
assert m['a'][0] == 'one'
assert m['a'][1] == 'two'
}