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// Copyright 2026 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
// Some of these error messages and grep responses are linux-specific.
//go:build linux
package grepper
import (
"strings"
"testing"
"github.com/google/syzkaller/pkg/aflow"
"github.com/google/syzkaller/pkg/vcs"
"github.com/stretchr/testify/assert"
)
func TestGrepper(t *testing.T) {
repo := vcs.MakeTestRepo(t, t.TempDir())
repo.CommitChangeset("description",
vcs.FileContent{
File: "foo.c",
Content: `
int some_func(void)
{
line;
foobar;
line;
}
`,
},
vcs.FileContent{
File: "bar.c",
Content: `
int another_func(int) {
foobar;
}
`,
},
vcs.FileContent{
File: "overflow.c",
Content: strings.Repeat(`
int some_func(int) {
barfoo;
}
`, 1000),
},
)
aflow.TestTool(t, Tool,
state{KernelSrc: repo.Dir},
args{Expression: "foobar"},
results{Output: `bar.c=2=int another_func(int) {
bar.c:3: foobar;
bar.c-4-}
--
foo.c=2=int some_func(void)
--
foo.c-4- line;
foo.c:5: foobar;
foo.c-6- line;
`},
"")
aflow.TestTool(t, Tool,
state{KernelSrc: repo.Dir},
args{Expression: "barfoo"},
func(got results) {
assert.True(t, strings.Contains(got.Output,
"Full output is too long, showing 500 out of 3999 lines."),
"%v", got)
assert.Equal(t, 505, strings.Count(got.Output, "\n"))
},
"")
aflow.TestTool(t, Tool,
state{KernelSrc: repo.Dir},
args{Expression: "something that never appears"},
results{},
"no matches")
aflow.TestTool(t, Tool,
state{KernelSrc: repo.Dir},
args{Expression: "bad expression ("},
results{},
`bad expression: fatal: command line, 'bad expression (': Unmatched ( or \(`)
aflow.TestTool(t, Tool,
state{KernelSrc: repo.Dir},
args{Expression: "->root"},
results{},
"no matches")
aflow.TestTool(t, Tool,
state{KernelSrc: repo.Dir},
args{Expression: `-\>root`},
results{},
"no matches")
}
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