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package main
import (
"go/ast"
"go/parser"
"go/token"
"os"
"path/filepath"
"strings"
"github.com/posener/complete"
"github.com/posener/complete/match"
)
// predictTest predict test names.
// it searches in the current directory for all the go test files
// and then all the relevant function names.
// for test names use prefix of 'Test' or 'Example', and for benchmark
// test names use 'Benchmark'
func predictTest(funcPrefix ...string) complete.Predictor {
return complete.PredictFunc(func(a complete.Args) (prediction []string) {
tests := testNames(funcPrefix)
for _, t := range tests {
if match.Prefix(t, a.Last) {
prediction = append(prediction, t)
}
}
return
})
}
// get all test names in current directory
func testNames(funcPrefix []string) (tests []string) {
filepath.Walk("./", func(path string, info os.FileInfo, err error) error {
// if not a test file, skip
if !strings.HasSuffix(path, "_test.go") {
return nil
}
// inspect test file and append all the test names
tests = append(tests, testsInFile(funcPrefix, path)...)
return nil
})
return
}
func testsInFile(funcPrefix []string, path string) (tests []string) {
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, path, nil, 0)
if err != nil {
complete.Log("Failed parsing %s: %s", path, err)
return nil
}
for _, d := range f.Decls {
if f, ok := d.(*ast.FuncDecl); ok {
name := f.Name.String()
for _, prefix := range funcPrefix {
if strings.HasPrefix(name, prefix) {
tests = append(tests, name)
break
}
}
}
}
return
}
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