git.sr.ht/~pingoo/stdx@v0.0.0-20240218134121-094174641f6e/cpuinfo/os_darwin_test.go (about) 1 package cpuinfo 2 3 import ( 4 "os/exec" 5 "strconv" 6 "strings" 7 "testing" 8 ) 9 10 // Tests that the returned L1 instruction cache value matches the value returned from 11 // a call to the OS `sysctl` utility. Skips the test if we can't run it. 12 func TestDarwinL1ICache(t *testing.T) { 13 out, err := exec.Command("/usr/sbin/sysctl", "-n", "hw.l1icachesize").Output() 14 if err != nil { 15 t.Skipf("cannot run sysctl utility: %v", err) 16 return 17 } 18 v, err := strconv.ParseInt(strings.TrimSpace(string(out)), 10, 0) 19 if err != nil { 20 t.Skipf("sysctl output %q could not be parsed as int: %v", string(out), err) 21 return 22 } 23 if CPU.Cache.L1I != int(v) { 24 t.Fatalf("sysctl output %q did not match CPU.Cache.L1I %d", string(out), CPU.Cache.L1I) 25 } 26 } 27 28 // Tests that the returned L1 data cache value matches the value returned from a call 29 // to the OS `sysctl` utility. Skips the test if we can't run it. 30 func TestDarwinL1DCache(t *testing.T) { 31 out, err := exec.Command("/usr/sbin/sysctl", "-n", "hw.l1dcachesize").Output() 32 if err != nil { 33 t.Skipf("cannot run sysctl utility: %v", err) 34 return 35 } 36 v, err := strconv.ParseInt(strings.TrimSpace(string(out)), 10, 0) 37 if err != nil { 38 t.Skipf("sysctl output %q could not be parsed as int: %v", string(out), err) 39 return 40 } 41 if CPU.Cache.L1D != int(v) { 42 t.Fatalf("sysctl output %q did not match CPU.Cache.L1D %d", string(out), CPU.Cache.L1D) 43 } 44 }