76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
package prototest
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import (
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"testing"
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"github.com/google/go-cmp/cmp"
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"google.golang.org/protobuf/testing/protocmp"
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)
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func AssertDeepEqual(t testing.TB, x, y interface{}, opts ...cmp.Option) {
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t.Helper()
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opts = append(opts, protocmp.Transform())
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if diff := cmp.Diff(x, y, opts...); diff != "" {
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t.Fatalf("assertion failed: values are not equal\n--- expected\n+++ actual\n%v", diff)
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}
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}
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// AssertElementsMatch asserts that the specified listX(array, slice...) is
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// equal to specified listY(array, slice...) ignoring the order of the
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// elements. If there are duplicate elements, the number of appearances of each
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// of them in both lists should match.
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//
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// prototest.AssertElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])
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func AssertElementsMatch[V any](
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t testing.TB, listX, listY []V, opts ...cmp.Option,
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) {
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t.Helper()
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if len(listX) == 0 && len(listY) == 0 {
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return
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}
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opts = append(opts, protocmp.Transform())
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// dump into a map keyed by sliceID
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mapX := make(map[int]V)
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for i, val := range listX {
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mapX[i] = val
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}
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mapY := make(map[int]V)
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for i, val := range listY {
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mapY[i] = val
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}
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var outX, outY []V
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for i, itemX := range mapX {
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for j, itemY := range mapY {
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if diff := cmp.Diff(itemX, itemY, opts...); diff == "" {
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outX = append(outX, itemX)
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outY = append(outY, itemY)
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delete(mapX, i)
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delete(mapY, j)
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}
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}
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}
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if len(outX) == len(outY) && len(listX) == len(listY) {
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return // matches
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}
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// dump remainder into the slice so we can generate a useful error
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for _, itemX := range mapX {
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outX = append(outX, itemX)
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}
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for _, itemY := range mapY {
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outY = append(outY, itemY)
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}
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if diff := cmp.Diff(outX, outY, opts...); diff != "" {
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t.Fatalf("assertion failed: slices do not have matching elements\n--- expected\n+++ actual\n%v", diff)
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}
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}
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