mirror of
https://github.com/jimeh/rands.git
synced 2026-02-19 03:16:39 +00:00
Jim Myhrberg
22fe517baa
randsmust is specifically intended as an alternative to rands for use in tests. All functions return a single value, and panic in the event of an error. This makes them easy to use when building structs in test cases that need random data. Internally the package simply calls the equivalent function from the rands package, and panics if a error is returned.
145 lines
3.0 KiB
Go
145 lines
3.0 KiB
Go
package randsmust
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import (
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"testing"
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"github.com/jimeh/rands"
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"github.com/stretchr/testify/assert"
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)
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var testIntCases = []struct {
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name string
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max int
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panicErrIs error
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panicStr string
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}{
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{
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name: "n=-2394345",
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max: -2394345,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-409600",
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max: -409600,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-1024",
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max: -1024,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-128",
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max: -128,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-32",
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max: -32,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-16",
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max: -16,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-8",
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max: -8,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-7",
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max: -7,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-2",
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max: -2,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=-1",
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max: -1,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{
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name: "n=0",
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max: 0,
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panicErrIs: rands.ErrInvalidMaxInt,
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panicStr: "rands: max cannot be less than 1",
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},
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{name: "n=1", max: 1},
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{name: "n=2", max: 2},
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{name: "n=7", max: 7},
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{name: "n=8", max: 8},
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{name: "n=16", max: 16},
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{name: "n=32", max: 32},
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{name: "n=128", max: 128},
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{name: "n=1024", max: 1024},
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{name: "n=409600", max: 409600},
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{name: "n=2394345", max: 2394345},
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}
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func TestInt(t *testing.T) {
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t.Parallel()
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for _, tt := range testIntCases {
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t.Run(tt.name, func(t *testing.T) {
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var got int
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p := recoverPanic(func() {
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got = Int(tt.max)
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})
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if tt.panicErrIs == nil || tt.panicStr == "" {
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assert.GreaterOrEqual(t, got, 0)
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assert.LessOrEqual(t, got, tt.max)
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}
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if tt.panicErrIs != nil {
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assert.ErrorIs(t, p.(error), tt.panicErrIs)
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}
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if tt.panicStr != "" {
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assert.EqualError(t, p.(error), tt.panicStr)
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}
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})
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}
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}
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func TestInt64(t *testing.T) {
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t.Parallel()
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for _, tt := range testIntCases {
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t.Run(tt.name, func(t *testing.T) {
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var got int64
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p := recoverPanic(func() {
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got = Int64(int64(tt.max))
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})
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if tt.panicErrIs == nil || tt.panicStr == "" {
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assert.GreaterOrEqual(t, got, int64(0))
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assert.LessOrEqual(t, got, int64(tt.max))
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}
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if tt.panicErrIs != nil {
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assert.ErrorIs(t, p.(error), tt.panicErrIs)
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}
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if tt.panicStr != "" {
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assert.EqualError(t, p.(error), tt.panicStr)
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}
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})
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}
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}
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