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Copy pathtestmain_test.go
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124 lines (100 loc) · 2.99 KB
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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssa_test
// Tests of FindTests. CreateTestMainPackage is tested via the interpreter.
// TODO(adonovan): test the 'pkgs' result from FindTests.
import (
"fmt"
"sort"
"testing"
"golang.org/x/tools/go/loader"
"honnef.co/go/tools/ssa"
"honnef.co/go/tools/ssa/ssautil"
)
func create(t *testing.T, content string) *ssa.Package {
var conf loader.Config
f, err := conf.ParseFile("foo_test.go", content)
if err != nil {
t.Fatal(err)
}
conf.CreateFromFiles("foo", f)
lprog, err := conf.Load()
if err != nil {
t.Fatal(err)
}
// We needn't call Build.
foo := lprog.Package("foo").Pkg
return ssautil.CreateProgram(lprog, ssa.SanityCheckFunctions).Package(foo)
}
func TestFindTests(t *testing.T) {
test := `
package foo
import "testing"
type T int
// Tests:
func Test(t *testing.T) {}
func TestA(t *testing.T) {}
func TestB(t *testing.T) {}
// Not tests:
func testC(t *testing.T) {}
func TestD() {}
func testE(t *testing.T) int { return 0 }
func (T) Test(t *testing.T) {}
// Benchmarks:
func Benchmark(*testing.B) {}
func BenchmarkA(b *testing.B) {}
func BenchmarkB(*testing.B) {}
// Not benchmarks:
func benchmarkC(t *testing.T) {}
func BenchmarkD() {}
func benchmarkE(t *testing.T) int { return 0 }
func (T) Benchmark(t *testing.T) {}
// Examples:
func Example() {}
func ExampleA() {}
// Not examples:
func exampleC() {}
func ExampleD(t *testing.T) {}
func exampleE() int { return 0 }
func (T) Example() {}
`
pkg := create(t, test)
tests, benchmarks, examples, _ := ssa.FindTests(pkg)
sort.Sort(funcsByPos(tests))
if got, want := fmt.Sprint(tests), "[foo.Test foo.TestA foo.TestB]"; got != want {
t.Errorf("FindTests.tests = %s, want %s", got, want)
}
sort.Sort(funcsByPos(benchmarks))
if got, want := fmt.Sprint(benchmarks), "[foo.Benchmark foo.BenchmarkA foo.BenchmarkB]"; got != want {
t.Errorf("FindTests.benchmarks = %s, want %s", got, want)
}
sort.Sort(funcsByPos(examples))
if got, want := fmt.Sprint(examples), "[foo.Example foo.ExampleA]"; got != want {
t.Errorf("FindTests examples = %s, want %s", got, want)
}
}
func TestFindTestsTesting(t *testing.T) {
test := `
package foo
// foo does not import "testing", but defines Examples.
func Example() {}
func ExampleA() {}
`
pkg := create(t, test)
tests, benchmarks, examples, _ := ssa.FindTests(pkg)
if len(tests) > 0 {
t.Errorf("FindTests.tests = %s, want none", tests)
}
if len(benchmarks) > 0 {
t.Errorf("FindTests.benchmarks = %s, want none", benchmarks)
}
sort.Sort(funcsByPos(examples))
if got, want := fmt.Sprint(examples), "[foo.Example foo.ExampleA]"; got != want {
t.Errorf("FindTests examples = %s, want %s", got, want)
}
}
type funcsByPos []*ssa.Function
func (p funcsByPos) Len() int { return len(p) }
func (p funcsByPos) Less(i, j int) bool { return p[i].Pos() < p[j].Pos() }
func (p funcsByPos) Swap(i, j int) { p[i], p[j] = p[j], p[i] }