Question 1

What is the naming convention for a test file in Go?

Accepted Answer

In Go, a test file must have the _test.go suffix and be placed in the same package as the code being tested. For example, to test main.go, create main_test.go. This convention allows the go test command to automatically discover test files without additional configuration.

Question 2

What is the correct signature for a test function in Go?

Accepted Answer

A test function in Go must start with Test, take a single parameter of type *testing.T, and return nothing. The name must start with a capital letter to be exported. For example, func TestAdd(t *testing.T). The t parameter allows signaling failures with t.Error, t.Fail, t.Fatal, etc.

Question 3

What is the difference between t.Error and t.Fatal?

Accepted Answer

t.Error marks the test as failed but continues test execution, allowing detection of multiple errors. t.Fatal marks the test as failed and immediately stops execution of the current test. Use t.Fatal when a critical precondition fails and continuing makes no sense, such as a setup failure or unexpected nil value.

Testing

What is the naming convention for a test file in Go?

Câu trả lời

What is the correct signature for a test function in Go?

Câu trả lời

What is the difference between t.Error and t.Fatal?

Câu trả lời

How to run only a specific test named TestAdd?

What is a table-driven test in Go?

Các chủ đề phỏng vấn Go khác

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Go Data Structures

Go Interfaces

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Goroutines Basics

Channels

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JSON Encoding

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Context Package

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Sync Primitives

Go Web Frameworks

REST API Design

gRPC

Reflection

Memory Management

Performance Optimization

Generics

Go Design Patterns

Microservices

Security & Authentication

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Kubernetes Basics

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CLI Development

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