host: add kallsyms parsing tests

Start with a few simple tests that can be extended when needed.

1 files changed, 64 insertions, 0 deletions

diff --git a/pkg/host/host_test.go b/pkg/host/host_test.go
index c8190dac5..43e063eaf 100644
--- a/pkg/host/host_test.go
+++ b/pkg/host/host_test.go
@@ -46,6 +46,70 @@ func TestDetectSupportedSyscalls(t *testing.T) {
 	}
 }
 
+func TestKallsymsParse(t *testing.T) {
+	tests := []struct {
+		Arch     string
+		Kallsyms []byte
+		Syscalls []string
+	}{
+		{
+			"amd64",
+			[]byte(`
+ffffffff817cdcc0 T __sys_bind
+ffffffff817cdda0 T __x64_sys_bind
+ffffffff817cddc0 T __ia32_sys_bind
+ffffffff817cdde0 T __sys_listen
+ffffffff817cde80 T __x64_sys_listen
+ffffffff817cde90 T __ia32_sys_listen
+ffffffff817cdea0 T __sys_accept4
+ffffffff817ce080 T __x64_sys_accept4
+ffffffff817ce0a0 T __ia32_sys_accept4
+			`),
+			[]string{"bind", "listen", "accept4"},
+		},
+		{
+			"arm64",
+			[]byte(`
+ffff000010a3ddf8 T __sys_bind
+ffff000010a3def8 T __arm64_sys_bind
+ffff000010a3df20 T __sys_listen
+ffff000010a3dfd8 T __arm64_sys_listen
+ffff000010a3e000 T __sys_accept4
+ffff000010a3e1f0 T __arm64_sys_accept4
+			`),
+			[]string{"bind", "listen", "accept4"},
+		},
+		{
+			"ppc64le",
+			[]byte(`
+c0000000011ec810 T __sys_bind
+c0000000011eca10 T sys_bind
+c0000000011eca10 T __se_sys_bind
+c0000000011eca70 T __sys_listen
+c0000000011ecc10 T sys_listen
+c0000000011ecc10 T __se_sys_listen
+c0000000011ecc70 T __sys_accept4
+c0000000011ed050 T sys_accept4
+c0000000011ed050 T __se_sys_accept4
+			`),
+			[]string{"bind", "listen", "accept4"},
+		},
+	}
+
+	for _, test := range tests {
+		syscallSet := parseKallsyms(test.Kallsyms, test.Arch)
+		if len(syscallSet) != len(test.Syscalls) {
+			t.Fatalf("wrong number of parse syscalls, expected: %v, got: %v",
+				len(test.Syscalls), len(syscallSet))
+		}
+		for _, syscall := range test.Syscalls {
+			if _, ok := syscallSet[syscall]; !ok {
+				t.Fatalf("syscall %v not found in parsed syscall list", syscall)
+			}
+		}
+	}
+}
+
 func TestCheck(t *testing.T) {
 	t.Parallel()
 	target, err := prog.GetTarget(runtime.GOOS, runtime.GOARCH)