1 files changed, 100 insertions, 0 deletions
diff --git a/libgo/go/cmd/go/tag_test.go b/libgo/go/cmd/go/tag_test.go
new file mode 100644
index 0000000000..ffe218c7b6
--- /dev/null
+++ b/libgo/go/cmd/go/tag_test.go
@@ -0,0 +1,100 @@
+// 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",
+	"go1",
+	"go1.0.1",
+	"go1.999",
+	"go1.9.2",
+	"go5",
+
+	// 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",
+	"go.2x",
+	"go.20000000000000",
+	"go.2.",
+	"go.2.0",
+	"go2x",
+	"go20000000000000",
+	"go2.",
+	"go2.0",
+}
+
+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"},
+		{"go1", "go1"},
+		{"go1.1", "go1.0.1"},
+		{"go1.998", "go1.9.2"},
+		{"go1.1000", "go1.999"},
+		{"go6", "go5"},
+
+		// faulty versions:
+		{"release.f00", ""},
+		{"weekly.1999-01-01", ""},
+		{"junk", ""},
+		{"", ""},
+		{"go2x", ""},
+		{"go200000000000", ""},
+		{"go2.", ""},
+		{"go2.0", ""},
+	*/
+	{"anything", "go1"},
+}
+
+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)
+		}
+	}
+}