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// Copyright (c) The EfficientGo Authors.
// Licensed under the Apache License 2.0.
package testutil
import (
"math"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
)
func TestContains(t *testing.T) {
tests := map[string]struct {
haystack []string
needle []string
shouldMatch bool
}{
"empty haystack": {
haystack: []string{},
needle: []string{"key1"},
shouldMatch: false,
},
"empty needle": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{},
shouldMatch: false,
},
"single value needle": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{"key1"},
shouldMatch: true,
},
"multiple value needle": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{"key1", "key2"},
shouldMatch: true,
},
"same size needle as haystack": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{"key1", "key2", "key3"},
shouldMatch: true,
},
"larger needle than haystack": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{"key1", "key2", "key3", "key4"},
shouldMatch: false,
},
"needle not contained": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{"key4"},
shouldMatch: false,
},
"haystack ends before needle": {
haystack: []string{"key1", "key2", "key3"},
needle: []string{"key3", "key4"},
shouldMatch: false,
},
}
for testName, testData := range tests {
t.Run(testName, func(t *testing.T) {
if testData.shouldMatch != contains(testData.haystack, testData.needle) {
t.Fatalf("unexpected result testing contains() with %#v", testData)
}
})
}
}
type child struct {
Val float64
}
type parent struct {
C child
}
type unexp struct {
val float64
}
func TestEqualsWithNaN(t *testing.T) {
for _, tc := range []struct {
name string
a interface{}
b interface{}
opts cmp.Options
}{
{
a: math.NaN(),
b: math.NaN(),
name: "Simple NaN value comparison",
opts: cmp.Options{cmpopts.EquateNaNs()},
},
{
a: child{Val: math.NaN()},
b: child{Val: math.NaN()},
name: "NaN value as struct member comparison",
opts: cmp.Options{cmpopts.EquateNaNs()},
},
{
a: parent{C: child{Val: math.NaN()}},
b: parent{C: child{Val: math.NaN()}},
name: "NaN value in nested struct comparison",
opts: cmp.Options{cmpopts.EquateNaNs()},
},
{
a: unexp{val: math.NaN()},
b: unexp{val: math.NaN()},
name: "NaN value as unexported struct member comparison",
opts: cmp.Options{cmp.AllowUnexported(unexp{}), cmpopts.EquateNaNs()},
},
} {
t.Run(tc.name, func(t *testing.T) {
WithGoCmp(tc.opts).Equals(t, tc.a, tc.b)
})
}
}
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