src/internal/cpu/cpu_test.go

// Copyright 2017 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 cpu_test

import (
	"internal/cpu"
	"runtime"
	"testing"
)

func TestAMD64minimalFeatures(t *testing.T) {
	if runtime.GOARCH == "amd64" {
		if !cpu.X86.HasSSE2 {
			t.Fatalf("HasSSE2 expected true, got false")
		}
	}
}

func TestAVX2hasAVX(t *testing.T) {
	if runtime.GOARCH == "amd64" {
		if cpu.X86.HasAVX2 && !cpu.X86.HasAVX {
			t.Fatalf("HasAVX expected true, got false")
		}
	}
}

func TestPPC64minimalFeatures(t *testing.T) {
	if runtime.GOARCH == "ppc64" || runtime.GOARCH == "ppc64le" {
		if !cpu.PPC64.IsPOWER8 {
			t.Fatalf("IsPOWER8 expected true, got false")
		}
		if !cpu.PPC64.HasVMX {
			t.Fatalf("HasVMX expected true, got false")
		}
		if !cpu.PPC64.HasDFP {
			t.Fatalf("HasDFP expected true, got false")
		}
		if !cpu.PPC64.HasVSX {
			t.Fatalf("HasVSX expected true, got false")
		}
		if !cpu.PPC64.HasISEL {
			t.Fatalf("HasISEL expected true, got false")
		}
		if !cpu.PPC64.HasVCRYPTO {
			t.Fatalf("HasVCRYPTO expected true, got false")
		}
	}
}

func TestARM64minimalFeatures(t *testing.T) {

	if runtime.GOARCH != "arm64" {
		return
	}

	switch runtime.GOOS {
	case "linux", "android":
	default:
		t.Skipf("%s/arm64 is not supported", runtime.GOOS)
	}

	if !cpu.ARM64.HasASIMD {
		t.Fatalf("HasASIMD expected true, got false")
	}
	if !cpu.ARM64.HasFP {
		t.Fatalf("HasFP expected true, got false")
	}
}