perrito666 / expect Goto Github PK
View Code? Open in Web Editor NEWA go test tool to manage expectations
License: MIT License
A go test tool to manage expectations
License: MIT License
given
package xyzzy
import (
"testing"
"perri.to/expect"
"perri.to/expect/snapshots/comparabletypes"
)
func TestTheThing(t *testing.T) {
expect.FromSnapshot(t, "potato", comparabletypes.NewStringComparable("hello"))
}
func TestMain(m *testing.M) {
m.Run()
expect.Cleanup()
}
then
$ find
.
./go.sum
./xyzzy_test.go
./go.mod
and
$ go test
--- FAIL: TestTheThing (0.00s)
asserts.go:159: loading expectatations file: reading file for loading: open TestExpectationsSnapshots/potato.txt: no such file or directory
FAIL
exit status 1
FAIL xyzzy 0.002s
so far so good. So then we run again with -u
:
$ go test -- -u
PASS
ok xyzzy 0.002s
$ find
.
./TestExpectationsSnapshots
./TestExpectationsSnapshots/potato.txt
./go.sum
./xyzzy_test.go
./go.mod
and the tests now pass
$ go test
PASS
ok xyzzy 0.002s
but if you ask it to clean up, it removes that snapshot:
$ go test -- -cleanup
PASS
ok xyzzy 0.002s
$ find
.
./TestExpectationsSnapshots
./go.sum
./xyzzy_test.go
./go.mod
and the tests now fail
$ go test
$ go test
--- FAIL: TestTheThing (0.00s)
asserts.go:159: loading expectatations file: reading file for loading: open TestExpectationsSnapshots/potato.txt: no such file or directory
FAIL
exit status 1
FAIL xyzzy 0.002s
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