dbcleaner
go-cmp
dbcleaner | go-cmp | |
---|---|---|
1 | 7 | |
158 | 3,992 | |
- | 1.4% | |
1.8 | 3.7 | |
over 2 years ago | 5 months ago | |
Go | Go | |
MIT License | BSD 3-clause "New" or "Revised" License |
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dbcleaner
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The Big Unit Test Misunderstanding
It is not hard to isolate and stub a database the problem is you will not catch a lot of errors, e.g. writing a 40 char string into a VCHAR(10), DateTime conversations, ...
In Ruby on Rails it is quite common to use a real database in the unit tests. Even before containers came out and it is still fast (yes, less than 1 second).
In rails you use the same database instance for all the tests, so you do not have spin up a database instance for every case. Instead you use a database cleaner.
There also exists a JS implementation: https://github.com/khaiql/dbcleaner
go-cmp
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Visualizing Diffs The Myers difference algorithm
This made me think of a couple other interesting things:
1. you can change which algorithm is used in git diff as multiple are supported
https://luppeng.wordpress.com/2020/10/10/when-to-use-each-of...
2. Google has an edit graph implementation in Go in the cmp package
https://github.com/google/go-cmp/blob/master/cmp/internal/di...
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How do you do DB preparation in e2e tests?
Assertion libraries that people seem to love: - testify (my favorite) - go-cmp is a more barebones library - gotest.tools -- I have never used this but some swear by it
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alecthomas/assert: A minimalist type-safe drop-in replacement for testify/require
it uses https://github.com/google/go-cmp instead of reflect.DeepEqual
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What annoys you about Go?
When I use functional arguments, I either prefix all of the options with the same prefix or put them in a dedicated package (like cmpopts) to help the IDE.
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Migrating from PHP to Go
Checking for equality in tests: https://github.com/google/go-cmp
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What are your favorite packages to use?
oklog/ulid to generate IDs. coreos/go-oidc for validating JWTs I get from auth. google/go-cmp for comparing structs in tests (unless the project is already using Testify). spf13/pflag because life's too short for Go's flag handling. getkin/kin-openapi for validating reqests/responses against my OpenAPI spec (in tests).
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Go Package for Equality: github.com/google/go-cmp
One thing to keep in mind about reflect.DeepEqual is because of the way it is implemented you could get positive results when the values are not actually the same, see this comment for reference.
What are some alternatives?
go-carpet - Tool for show test coverage in terminal for Go source files
Testify - A toolkit with common assertions and mocks that plays nicely with the standard library
bro - bro watch files in directory and run tests for them
ginkgo - A Modern Testing Framework for Go
Gauge - Light weight cross-platform test automation
go-testdeep - Extremely flexible golang deep comparison, extends the go testing package, tests HTTP APIs and provides tests suite
goblin - Minimal and Beautiful Go testing framework
JSON-to-Go - Translates JSON into a Go type in your browser instantly (original)
testfixtures - Ruby on Rails like test fixtures for Go. Write tests against a real database
godog - Cucumber for golang
goc - A Comprehensive Coverage Testing System for The Go Programming Language
assert - A simple assertion library using Go generics