41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
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package greeting
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import "testing"
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// Define a function named HelloWorld that takes no arguments,
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// and returns a string.
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// In other words, define a function with the following signature:
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// HelloWorld() string
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func TestHelloWorld(t *testing.T) {
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expected := "Hello, World!"
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if observed := HelloWorld(); observed != expected {
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t.Fatalf("HelloWorld() = %v, want %v", observed, expected)
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}
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}
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// BenchmarkHelloWorld() is a benchmarking function. These functions follow the
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// form `func BenchmarkXxx(*testing.B)` and can be used to test the performance
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// of your implementation. They may not be present in every exercise, but when
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// they are you can run them by including the `-bench` flag with the `go test`
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// command, like so: `go test -v --bench . --benchmem`
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//
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// You will see output similar to the following:
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//
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// BenchmarkHelloWorld 2000000000 0.46 ns/op
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//
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// This means that the loop ran 2000000000 times at a speed of 0.46 ns per loop.
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//
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// While benchmarking can be useful to compare different iterations of the same
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// exercise, keep in mind that others will run the same benchmarks on different
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// machines, with different specs, so the results from these benchmark tests may
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// vary.
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func BenchmarkHelloWorld(b *testing.B) {
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if testing.Short() {
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b.Skip("skipping benchmark in short mode.")
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}
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for i := 0; i < b.N; i++ {
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HelloWorld()
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}
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}
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