55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package analysistest_test
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"golang.org/x/tools/go/analysis/analysistest"
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"golang.org/x/tools/go/analysis/passes/findcall"
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)
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// TestTheTest tests the analysistest testing infrastructure.
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func TestTheTest(t *testing.T) {
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// We'll simulate a partly failing test of the findcall analysis,
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// which (by default) reports calls to functions named 'println'.
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filemap := map[string]string{"a/b.go": `package main
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func main() {
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println("hello, world") // want "call of println"
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println("hello, world") // want "wrong expectation text"
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println() // trigger an unexpected diagnostic
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print() // want "unsatisfied expectation"
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print() // want: "ill-formed 'want' comment"
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}
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`}
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dir, cleanup, err := analysistest.WriteFiles(filemap)
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if err != nil {
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t.Fatal(err)
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}
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defer cleanup()
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var got []string
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t2 := errorfunc(func(s string) { got = append(got, s) }) // a fake *testing.T
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analysistest.Run(t2, dir, findcall.Analyzer, "a")
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want := []string{
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`a/b.go:8:10: in 'want' comment: invalid syntax`,
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`a/b.go:5:9: diagnostic "call of println(...)" does not match pattern "wrong expectation text"`,
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`a/b.go:6:9: unexpected diagnostic: call of println(...)`,
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`a/b.go:7: expected diagnostic matching "unsatisfied expectation"`,
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}
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if !reflect.DeepEqual(got, want) {
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t.Errorf("got:\n%s\nwant:\n%s",
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strings.Join(got, "\n"),
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strings.Join(want, "\n"))
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}
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}
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type errorfunc func(string)
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func (f errorfunc) Errorf(format string, args ...interface{}) {
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f(fmt.Sprintf(format, args...))
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}
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