1 files changed, 80 insertions, 0 deletions
diff --git a/src/lib/exvar/exvar_test.go b/src/lib/exvar/exvar_test.go
new file mode 100644
index 000000000..28fbf3cf2
--- /dev/null
+++ b/src/lib/exvar/exvar_test.go
@@ -0,0 +1,80 @@
+// Copyright 2009 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 exvar
+
+import (
+	"exvar";
+	"fmt";
+	"json";
+	"testing";
+)
+
+func TestInt(t *testing.T) {
+	reqs := NewInt("requests");
+	if reqs.i != 0 {
+		t.Errorf("reqs.i = %v, want 4", reqs.i)
+	}
+	if reqs != Get("requests").(*Int) {
+		t.Errorf("Get() failed.")
+	}
+
+	reqs.Add(1);
+	reqs.Add(3);
+	if reqs.i != 4 {
+		t.Errorf("reqs.i = %v, want 4", reqs.i)
+	}
+
+	if s := reqs.String(); s != "4" {
+		t.Errorf("reqs.String() = %q, want \"4\"", s);
+	}
+}
+
+func TestString(t *testing.T) {
+	name := NewString("my-name");
+	if name.s != "" {
+		t.Errorf("name.s = %q, want \"\"", name.s)
+	}
+
+	name.Set("Mike");
+	if name.s != "Mike" {
+		t.Errorf("name.s = %q, want \"Mike\"", name.s)
+	}
+
+	if s := name.String(); s != "\"Mike\"" {
+		t.Errorf("reqs.String() = %q, want \"\"Mike\"\"", s);
+	}
+}
+
+func TestMapCounter(t *testing.T) {
+	colours := NewMap("bike-shed-colours");
+
+	colours.Add("red", 1);
+	colours.Add("red", 2);
+	colours.Add("blue", 4);
+	if x := colours.m["red"].(*Int).i; x != 3 {
+		t.Errorf("colours.m[\"red\"] = %v, want 3", x)
+	}
+	if x := colours.m["blue"].(*Int).i; x != 4 {
+		t.Errorf("colours.m[\"blue\"] = %v, want 4", x)
+	}
+
+	// colours.String() should be '{"red":3, "blue":4}',
+	// though the order of red and blue could vary.
+	s := colours.String();
+	j, ok, errtok := json.StringToJson(s);
+	if !ok {
+		t.Errorf("colours.String() isn't valid JSON: %v", errtok)
+	}
+	if j.Kind() != json.MapKind {
+		t.Error("colours.String() didn't produce a map.")
+	}
+	red := j.Get("red");
+	if red.Kind() != json.NumberKind {
+		t.Error("red.Kind() is not a NumberKind.")
+	}
+	if x := red.Number(); x != 3 {
+		t.Error("red = %v, want 3", x)
+	}
+}