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path: root/Godeps/_workspace/src/github.com/mattn/go-runewidth/runewidth_test.go
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package runewidth

import (
    "testing"
)

var runewidthtests = []struct {
    in  rune
    out int
}{
    {'世', 2},
    {'界', 2},
    {'セ', 1},
    {'カ', 1},
    {'イ', 1},
    {'☆', 2}, // double width in ambiguous
    {'\x00', 0},
    {'\x01', 1},
    {'\u0300', 0},
}

func TestRuneWidth(t *testing.T) {
    c := NewCondition()
    c.EastAsianWidth = true
    for _, tt := range runewidthtests {
        if out := c.RuneWidth(tt.in); out != tt.out {
            t.Errorf("Width(%q) = %v, want %v", tt.in, out, tt.out)
        }
    }
}

var isambiguouswidthtests = []struct {
    in  rune
    out bool
}{
    {'世', false},
    {'■', true},
    {'界', false},
    {'○', true},
    {'㈱', false},
    {'①', true},
    {'②', true},
    {'③', true},
    {'④', true},
    {'⑤', true},
    {'⑥', true},
    {'⑦', true},
    {'⑧', true},
    {'⑨', true},
    {'⑩', true},
    {'⑪', true},
    {'⑫', true},
    {'⑬', true},
    {'⑭', true},
    {'⑮', true},
    {'⑯', true},
    {'⑰', true},
    {'⑱', true},
    {'⑲', true},
    {'⑳', true},
    {'☆', true},
}

func TestIsAmbiguousWidth(t *testing.T) {
    for _, tt := range isambiguouswidthtests {
        if out := IsAmbiguousWidth(tt.in); out != tt.out {
            t.Errorf("IsAmbiguousWidth(%q) = %v, want %v", tt.in, out, tt.out)
        }
    }
}

var stringwidthtests = []struct {
    in  string
    out int
}{
    {"■㈱の世界①", 12},
    {"スター☆", 8},
}

func TestStringWidth(t *testing.T) {
    c := NewCondition()
    c.EastAsianWidth = true
    for _, tt := range stringwidthtests {
        if out := c.StringWidth(tt.in); out != tt.out {
            t.Errorf("StringWidth(%q) = %v, want %v", tt.in, out, tt.out)
        }
    }
}

func TestStringWidthInvalid(t *testing.T) {
    s := "こんにちわ\x00世界"
    if out := StringWidth(s); out != 14 {
        t.Errorf("StringWidth(%q) = %v, want %v", s, out, 14)
    }
}

func TestTruncate(t *testing.T) {
    s := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおおおおお"
    expected := "あいうえおあいうえおえおおおおおおおおおおおおおおおおおおおおおおおおおおお..."

    if out := Truncate(s, 80, "..."); out != expected {
        t.Errorf("Truncate(%q) = %v, want %v", s, out, expected)
    }
}

func TestTruncateNoNeeded(t *testing.T) {
    s := "あいうえおあい"
    expected := "あいうえおあい"

    if out := Truncate(s, 80, "..."); out != expected {
        t.Errorf("Truncate(%q) = %v, want %v", s, out, expected)
    }
}

var isneutralwidthtests = []struct {
    in  rune
    out bool
}{
    {'→', false},
    {'┊', false},
    {'┈', false},
    {'~', false},
    {'└', false},
    {'⣀', true},
    {'⣀', true},
}

func TestIsNeutralWidth(t *testing.T) {
    for _, tt := range isneutralwidthtests {
        if out := IsNeutralWidth(tt.in); out != tt.out {
            t.Errorf("IsNeutralWidth(%q) = %v, want %v", tt.in, out, tt.out)
        }
    }
}