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523 lines
11 KiB
Go
523 lines
11 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package number
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import (
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"fmt"
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"log"
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"testing"
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"golang.org/x/text/language"
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)
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func TestAppendDecimal(t *testing.T) {
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type pairs map[string]string // alternates with decimal input and result
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testCases := []struct {
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pattern string
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// We want to be able to test some forms of patterns that cannot be
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// represented as a string.
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pat *Pattern
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test pairs
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}{{
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pattern: "0",
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test: pairs{
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"0": "0",
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"1": "1",
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"-1": "-1",
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".00": "0",
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"10.": "10",
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"12": "12",
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"1.2": "1",
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"NaN": "NaN",
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"-Inf": "-∞",
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},
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}, {
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pattern: "+0;+0",
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test: pairs{
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"0": "+0",
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"1": "+1",
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"-1": "-1",
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".00": "+0",
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"10.": "+10",
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"12": "+12",
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"1.2": "+1",
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"NaN": "NaN",
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"-Inf": "-∞",
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"Inf": "+∞",
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},
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}, {
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pattern: "0 +;0 +",
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test: pairs{
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"0": "0 +",
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"1": "1 +",
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"-1": "1 -",
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".00": "0 +",
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},
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}, {
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pattern: "0;0-",
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test: pairs{
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"-1": "1-",
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"NaN": "NaN",
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"-Inf": "∞-",
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"Inf": "∞",
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},
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}, {
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pattern: "0000",
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test: pairs{
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"0": "0000",
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"1": "0001",
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"12": "0012",
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"12345": "12345",
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},
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}, {
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pattern: ".0",
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test: pairs{
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"0": ".0",
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"1": "1.0",
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"1.2": "1.2",
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"1.2345": "1.2",
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},
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}, {
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pattern: "#.0",
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test: pairs{
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"0": ".0",
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},
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}, {
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pattern: "#.0#",
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test: pairs{
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"0": ".0",
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"1": "1.0",
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},
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}, {
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pattern: "0.0#",
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test: pairs{
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"0": "0.0",
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},
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}, {
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pattern: "#0.###",
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test: pairs{
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"0": "0",
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"1": "1",
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"1.2": "1.2",
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"1.2345": "1.234", // rounding should have been done earlier
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"1234.5": "1234.5",
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"1234.567": "1234.567",
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},
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}, {
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pattern: "#0.######",
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test: pairs{
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"0": "0",
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"1234.5678": "1234.5678",
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"0.123456789": "0.123457",
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"NaN": "NaN",
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"Inf": "∞",
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},
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// Test separators.
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}, {
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pattern: "#,#.00",
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test: pairs{
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"100": "1,0,0.00",
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},
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}, {
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pattern: "#,0.##",
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test: pairs{
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"10": "1,0",
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},
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}, {
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pattern: "#,0",
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test: pairs{
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"10": "1,0",
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},
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}, {
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pattern: "#,##,#.00",
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test: pairs{
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"1000": "1,00,0.00",
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},
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}, {
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pattern: "#,##0.###",
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test: pairs{
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"0": "0",
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"1234.5678": "1,234.568",
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"0.123456789": "0.123",
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},
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}, {
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pattern: "#,##,##0.###",
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test: pairs{
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"0": "0",
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"123456789012": "1,23,45,67,89,012",
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"0.123456789": "0.123",
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},
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}, {
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pattern: "0,00,000.###",
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test: pairs{
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"0": "0,00,000",
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"123456789012": "1,23,45,67,89,012",
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"12.3456789": "0,00,012.346",
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"0.123456789": "0,00,000.123",
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},
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// Support for ill-formed patterns.
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}, {
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pattern: "#",
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test: pairs{
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".00": "", // This is the behavior of fmt.
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"0": "", // This is the behavior of fmt.
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"1": "1",
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"10.": "10",
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},
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}, {
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pattern: ".#",
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test: pairs{
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"0": "", // This is the behavior of fmt.
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"1": "1",
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"1.2": "1.2",
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"1.2345": "1.2",
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},
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}, {
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pattern: "#,#.##",
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test: pairs{
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"10": "1,0",
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},
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}, {
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pattern: "#,#",
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test: pairs{
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"10": "1,0",
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},
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// Special patterns
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}, {
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pattern: "#,max_int=2",
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pat: &Pattern{
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RoundingContext: RoundingContext{
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MaxIntegerDigits: 2,
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},
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},
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test: pairs{
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"2017": "17",
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},
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}, {
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pattern: "0,max_int=2",
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pat: &Pattern{
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RoundingContext: RoundingContext{
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MaxIntegerDigits: 2,
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MinIntegerDigits: 1,
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},
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},
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test: pairs{
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"2000": "0",
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"2001": "1",
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"2017": "17",
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},
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}, {
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pattern: "00,max_int=2",
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pat: &Pattern{
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RoundingContext: RoundingContext{
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MaxIntegerDigits: 2,
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MinIntegerDigits: 2,
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},
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},
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test: pairs{
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"2000": "00",
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"2001": "01",
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"2017": "17",
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},
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}, {
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pattern: "@@@@,max_int=2",
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pat: &Pattern{
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RoundingContext: RoundingContext{
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MaxIntegerDigits: 2,
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MinSignificantDigits: 4,
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},
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},
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test: pairs{
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"2017": "17.00",
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"2000": "0.000",
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"2001": "1.000",
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},
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// Significant digits
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}, {
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pattern: "@@##",
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test: pairs{
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"1": "1.0",
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"0.1": "0.10", // leading zero does not count as significant digit
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"123": "123",
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"1234": "1234",
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"12345": "12340",
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},
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}, {
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pattern: "@@@@",
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test: pairs{
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"1": "1.000",
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".1": "0.1000",
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".001": "0.001000",
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"123": "123.0",
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"1234": "1234",
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"12345": "12340", // rounding down
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"NaN": "NaN",
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"-Inf": "-∞",
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},
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// TODO: rounding
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// {"@@@@": "23456": "23460"}, // rounding up
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// TODO: padding
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// Scientific and Engineering notation
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}, {
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pattern: "#E0",
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test: pairs{
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"0": "0\u202f×\u202f10⁰",
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"1": "1\u202f×\u202f10⁰",
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"123.456": "1\u202f×\u202f10²",
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},
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}, {
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pattern: "#E+0",
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test: pairs{
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"0": "0\u202f×\u202f10⁺⁰",
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"1000": "1\u202f×\u202f10⁺³",
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"1E100": "1\u202f×\u202f10⁺¹⁰⁰",
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"1E-100": "1\u202f×\u202f10⁻¹⁰⁰",
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"NaN": "NaN",
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"-Inf": "-∞",
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},
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}, {
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pattern: "##0E00",
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test: pairs{
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"100": "100\u202f×\u202f10⁰⁰",
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"12345": "12\u202f×\u202f10⁰³",
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"123.456": "123\u202f×\u202f10⁰⁰",
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},
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}, {
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pattern: "##0.###E00",
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test: pairs{
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"100": "100\u202f×\u202f10⁰⁰",
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"12345": "12.345\u202f×\u202f10⁰³",
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"123456": "123.456\u202f×\u202f10⁰³",
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"123.456": "123.456\u202f×\u202f10⁰⁰",
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"123.4567": "123.457\u202f×\u202f10⁰⁰",
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},
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}, {
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pattern: "##0.000E00",
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test: pairs{
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"100": "100.000\u202f×\u202f10⁰⁰",
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"12345": "12.345\u202f×\u202f10⁰³",
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"123.456": "123.456\u202f×\u202f10⁰⁰",
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"12.3456": "12.346\u202f×\u202f10⁰⁰",
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},
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}, {
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pattern: "@@E0",
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test: pairs{
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"0": "0.0\u202f×\u202f10⁰",
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"99": "9.9\u202f×\u202f10¹",
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"0.99": "9.9\u202f×\u202f10⁻¹",
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},
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}, {
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pattern: "@###E00",
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test: pairs{
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"0": "0\u202f×\u202f10⁰⁰",
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"1": "1\u202f×\u202f10⁰⁰",
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"11": "1.1\u202f×\u202f10⁰¹",
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"111": "1.11\u202f×\u202f10⁰²",
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"1111": "1.111\u202f×\u202f10⁰³",
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"11111": "1.111\u202f×\u202f10⁰⁴",
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"0.1": "1\u202f×\u202f10⁻⁰¹",
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"0.11": "1.1\u202f×\u202f10⁻⁰¹",
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"0.001": "1\u202f×\u202f10⁻⁰³",
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},
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}, {
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pattern: "*x##0",
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test: pairs{
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"0": "xx0",
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"10": "x10",
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"100": "100",
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"1000": "1000",
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},
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}, {
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pattern: "##0*x",
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test: pairs{
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"0": "0xx",
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"10": "10x",
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"100": "100",
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"1000": "1000",
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},
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}, {
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pattern: "* ###0.000",
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test: pairs{
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"0": " 0.000",
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"123": " 123.000",
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"123.456": " 123.456",
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"1234.567": "1234.567",
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},
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}, {
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pattern: "**0.0#######E00",
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test: pairs{
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"0": "***0.0\u202f×\u202f10⁰⁰",
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"10": "***1.0\u202f×\u202f10⁰¹",
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"11": "***1.1\u202f×\u202f10⁰¹",
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"111": "**1.11\u202f×\u202f10⁰²",
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"1111": "*1.111\u202f×\u202f10⁰³",
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"11111": "1.1111\u202f×\u202f10⁰⁴",
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"11110": "*1.111\u202f×\u202f10⁰⁴",
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"11100": "**1.11\u202f×\u202f10⁰⁴",
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"11000": "***1.1\u202f×\u202f10⁰⁴",
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"10000": "***1.0\u202f×\u202f10⁰⁴",
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},
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}, {
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pattern: "*xpre0suf",
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test: pairs{
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"0": "pre0suf",
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"10": "pre10suf",
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},
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}, {
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pattern: "*∞ pre ###0 suf",
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test: pairs{
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"0": "∞∞∞ pre 0 suf",
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"10": "∞∞ pre 10 suf",
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"100": "∞ pre 100 suf",
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"1000": " pre 1000 suf",
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},
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}, {
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pattern: "pre *∞###0 suf",
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test: pairs{
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"0": "pre ∞∞∞0 suf",
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"10": "pre ∞∞10 suf",
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"100": "pre ∞100 suf",
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"1000": "pre 1000 suf",
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},
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}, {
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pattern: "pre ###0*∞ suf",
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test: pairs{
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"0": "pre 0∞∞∞ suf",
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"10": "pre 10∞∞ suf",
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"100": "pre 100∞ suf",
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"1000": "pre 1000 suf",
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},
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}, {
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pattern: "pre ###0 suf *∞",
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test: pairs{
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"0": "pre 0 suf ∞∞∞",
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"10": "pre 10 suf ∞∞",
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"100": "pre 100 suf ∞",
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"1000": "pre 1000 suf ",
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},
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}, {
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// Take width of positive pattern.
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pattern: "**###0;**-#####0x",
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test: pairs{
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"0": "***0",
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"-1": "*-1x",
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},
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}, {
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pattern: "0.00%",
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test: pairs{
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"0.1": "10.00%",
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},
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}, {
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pattern: "0.##%",
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test: pairs{
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"0.1": "10%",
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"0.11": "11%",
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"0.111": "11.1%",
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"0.1111": "11.11%",
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"0.11111": "11.11%",
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},
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}, {
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pattern: "‰ 0.0#",
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test: pairs{
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"0.1": "‰ 100.0",
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"0.11": "‰ 110.0",
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"0.111": "‰ 111.0",
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"0.1111": "‰ 111.1",
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"0.11111": "‰ 111.11",
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"0.111111": "‰ 111.11",
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},
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}}
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// TODO:
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// "#,##0.00¤",
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// "#,##0.00 ¤;(#,##0.00 ¤)",
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for _, tc := range testCases {
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pat := tc.pat
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if pat == nil {
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var err error
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if pat, err = ParsePattern(tc.pattern); err != nil {
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log.Fatal(err)
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}
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}
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var f Formatter
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f.InitPattern(language.English, pat)
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for num, want := range tc.test {
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buf := make([]byte, 100)
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t.Run(tc.pattern+"/"+num, func(t *testing.T) {
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var d Decimal
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d.Convert(f.RoundingContext, dec(num))
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buf = f.Format(buf[:0], &d)
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if got := string(buf); got != want {
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t.Errorf("\n got %[1]q (%[1]s)\nwant %[2]q (%[2]s)", got, want)
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}
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})
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}
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}
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}
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func TestLocales(t *testing.T) {
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testCases := []struct {
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tag language.Tag
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num string
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want string
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}{
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{language.Make("en"), "123456.78", "123,456.78"},
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{language.Make("de"), "123456.78", "123.456,78"},
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{language.Make("de-CH"), "123456.78", "123’456.78"},
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{language.Make("fr"), "123456.78", "123 456,78"},
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{language.Make("bn"), "123456.78", "১,২৩,৪৫৬.৭৮"},
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}
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for _, tc := range testCases {
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t.Run(fmt.Sprint(tc.tag, "/", tc.num), func(t *testing.T) {
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var f Formatter
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f.InitDecimal(tc.tag)
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var d Decimal
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d.Convert(f.RoundingContext, dec(tc.num))
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b := f.Format(nil, &d)
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if got := string(b); got != tc.want {
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t.Errorf("got %[1]q (%[1]s); want %[2]q (%[2]s)", got, tc.want)
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}
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})
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}
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}
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func TestFormatters(t *testing.T) {
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var f Formatter
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testCases := []struct {
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init func(t language.Tag)
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num string
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want string
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}{
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{f.InitDecimal, "123456.78", "123,456.78"},
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{f.InitScientific, "123456.78", "1.23\u202f×\u202f10⁵"},
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{f.InitEngineering, "123456.78", "123.46\u202f×\u202f10³"},
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{f.InitEngineering, "1234", "1.23\u202f×\u202f10³"},
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{f.InitPercent, "0.1234", "12.34%"},
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{f.InitPerMille, "0.1234", "123.40‰"},
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}
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for i, tc := range testCases {
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t.Run(fmt.Sprint(i, "/", tc.num), func(t *testing.T) {
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tc.init(language.English)
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f.SetScale(2)
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var d Decimal
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d.Convert(f.RoundingContext, dec(tc.num))
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b := f.Format(nil, &d)
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if got := string(b); got != tc.want {
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t.Errorf("got %[1]q (%[1]s); want %[2]q (%[2]s)", got, tc.want)
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}
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})
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}
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}
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