code review 4172055: goinstall: handle $(GOOS) and $(GOARCH) in filenames

src/cmd/goinstall/syslist_test.go

+// Copyright 2011 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 main
+
+import (
+        "runtime"
+        "testing"
+)
+
+var (
+        thisOS    = runtime.GOOS
+        thisArch  = runtime.GOARCH
+        otherOS   = "freebsd"
+        otherArch = "arm"
+)
+
+func init() {
+        if thisOS == otherOS {
+                otherOS = "linux"
+        }
+        if thisArch == otherArch {
+                otherArch = "amd64"
+        }
+}
+
+type GoodFileTest struct {
+        name   string
+        result bool
+}
+
+var tests = []GoodFileTest{
+        {"file.go", true},
+        {"file.c", true},
+        {"file_foo.go", true},
+        {"file_" + thisArch + ".go", true},
+        {"file_" + otherArch + ".go", false},
+        {"file_" + thisOS + ".go", true},
+        {"file_" + otherOS + ".go", false},
+        {"file_" + thisOS + "_" + thisArch + ".go", true},
+        {"file_" + otherOS + "_" + thisArch + ".go", false},
+        {"file_" + thisOS + "_" + otherArch + ".go", false},
+        {"file_" + otherOS + "_" + otherArch + ".go", false},
+        {"file_foo_" + thisArch + ".go", true},
+        {"file_foo_" + otherArch + ".go", false},
+        {"file_" + thisOS + ".c", true},
+        {"file_" + otherOS + ".c", false},
+}
+
+func TestGoodOSArch(t *testing.T) {
+        for _, test := range tests {
+                if goodOSArch(test.name) != test.result {
+                        t.Fatalf("goodOSArch(%q) != %v", test.name, test.result)
+                }
+        }
+}