cmd/go: copy tag_test.go from goinstall

hg cat -r 11846 src/cmd/goinstall/tag_test.go >tag_test.go
No changes.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5919047

diff --git a/src/cmd/go/tag_test.go b/src/cmd/go/tag_test.go
new file mode 100644 (file)
index 0000000..a23a7ea
--- /dev/null
+++ b/src/cmd/go/tag_test.go
@@ -0,0 +1,73 @@
+// 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 "testing"
+
+var selectTagTestTags = []string{
+       "go.r58",
+       "go.r58.1",
+       "go.r59",
+       "go.r59.1",
+       "go.r61",
+       "go.r61.1",
+       "go.weekly.2010-01-02",
+       "go.weekly.2011-10-12",
+       "go.weekly.2011-10-12.1",
+       "go.weekly.2011-10-14",
+       "go.weekly.2011-11-01",
+       // these should be ignored:
+       "release.r59",
+       "release.r59.1",
+       "release",
+       "weekly.2011-10-12",
+       "weekly.2011-10-12.1",
+       "weekly",
+       "foo",
+       "bar",
+       "go.f00",
+       "go!r60",
+       "go.1999-01-01",
+}
+
+var selectTagTests = []struct {
+       version  string
+       selected string
+}{
+       {"release.r57", ""},
+       {"release.r58.2", "go.r58.1"},
+       {"release.r59", "go.r59"},
+       {"release.r59.1", "go.r59.1"},
+       {"release.r60", "go.r59.1"},
+       {"release.r60.1", "go.r59.1"},
+       {"release.r61", "go.r61"},
+       {"release.r66", "go.r61.1"},
+       {"weekly.2010-01-01", ""},
+       {"weekly.2010-01-02", "go.weekly.2010-01-02"},
+       {"weekly.2010-01-02.1", "go.weekly.2010-01-02"},
+       {"weekly.2010-01-03", "go.weekly.2010-01-02"},
+       {"weekly.2011-10-12", "go.weekly.2011-10-12"},
+       {"weekly.2011-10-12.1", "go.weekly.2011-10-12.1"},
+       {"weekly.2011-10-13", "go.weekly.2011-10-12.1"},
+       {"weekly.2011-10-14", "go.weekly.2011-10-14"},
+       {"weekly.2011-10-14.1", "go.weekly.2011-10-14"},
+       {"weekly.2011-11-01", "go.weekly.2011-11-01"},
+       {"weekly.2014-01-01", "go.weekly.2011-11-01"},
+       {"weekly.3000-01-01", "go.weekly.2011-11-01"},
+       // faulty versions:
+       {"release.f00", ""},
+       {"weekly.1999-01-01", ""},
+       {"junk", ""},
+       {"", ""},
+}
+
+func TestSelectTag(t *testing.T) {
+       for _, c := range selectTagTests {
+               selected := selectTag(c.version, selectTagTestTags)
+               if selected != c.selected {
+                       t.Errorf("selectTag(%q) = %q, want %q", c.version, selected, c.selected)
+               }
+       }
+}