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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libgo/go/expvar/expvar_test.go
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Diffstat (limited to 'libgo/go/expvar/expvar_test.go')
-rw-r--r--libgo/go/expvar/expvar_test.go154
1 files changed, 154 insertions, 0 deletions
diff --git a/libgo/go/expvar/expvar_test.go b/libgo/go/expvar/expvar_test.go
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index 000000000..a8b1a96a9
--- /dev/null
+++ b/libgo/go/expvar/expvar_test.go
@@ -0,0 +1,154 @@
+// 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 expvar
+
+import (
+ "json"
+ "testing"
+)
+
+func TestInt(t *testing.T) {
+ reqs := NewInt("requests")
+ if reqs.i != 0 {
+ t.Errorf("reqs.i = %v, want 0", 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)
+ }
+
+ reqs.Set(-2)
+ if reqs.i != -2 {
+ t.Errorf("reqs.i = %v, want -2", reqs.i)
+ }
+}
+
+func TestFloat(t *testing.T) {
+ reqs := NewFloat("requests-float")
+ if reqs.f != 0.0 {
+ t.Errorf("reqs.f = %v, want 0", reqs.f)
+ }
+ if reqs != Get("requests-float").(*Float) {
+ t.Errorf("Get() failed.")
+ }
+
+ reqs.Add(1.5)
+ reqs.Add(1.25)
+ if reqs.f != 2.75 {
+ t.Errorf("reqs.f = %v, want 2.75", reqs.f)
+ }
+
+ if s := reqs.String(); s != "2.75" {
+ t.Errorf("reqs.String() = %q, want \"4.64\"", s)
+ }
+
+ reqs.Add(-2)
+ if reqs.f != 0.75 {
+ t.Errorf("reqs.f = %v, want 0.75", reqs.f)
+ }
+}
+
+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)
+ colours.AddFloat("green", 4.125)
+ 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)
+ }
+ if x := colours.m["green"].(*Float).f; x != 4.125 {
+ t.Errorf("colours.m[\"green\"] = %v, want 3.14", x)
+ }
+
+ // colours.String() should be '{"red":3, "blue":4}',
+ // though the order of red and blue could vary.
+ s := colours.String()
+ var j interface{}
+ err := json.Unmarshal([]byte(s), &j)
+ if err != nil {
+ t.Errorf("colours.String() isn't valid JSON: %v", err)
+ }
+ m, ok := j.(map[string]interface{})
+ if !ok {
+ t.Error("colours.String() didn't produce a map.")
+ }
+ red := m["red"]
+ x, ok := red.(float64)
+ if !ok {
+ t.Error("red.Kind() is not a number.")
+ }
+ if x != 3 {
+ t.Errorf("red = %v, want 3", x)
+ }
+}
+
+func TestIntFunc(t *testing.T) {
+ x := int64(4)
+ ix := IntFunc(func() int64 { return x })
+ if s := ix.String(); s != "4" {
+ t.Errorf("ix.String() = %v, want 4", s)
+ }
+
+ x++
+ if s := ix.String(); s != "5" {
+ t.Errorf("ix.String() = %v, want 5", s)
+ }
+}
+
+func TestFloatFunc(t *testing.T) {
+ x := 8.5
+ ix := FloatFunc(func() float64 { return x })
+ if s := ix.String(); s != "8.5" {
+ t.Errorf("ix.String() = %v, want 3.14", s)
+ }
+
+ x -= 1.25
+ if s := ix.String(); s != "7.25" {
+ t.Errorf("ix.String() = %v, want 4.34", s)
+ }
+}
+
+func TestStringFunc(t *testing.T) {
+ x := "hello"
+ sx := StringFunc(func() string { return x })
+ if s, exp := sx.String(), `"hello"`; s != exp {
+ t.Errorf(`sx.String() = %q, want %q`, s, exp)
+ }
+
+ x = "goodbye"
+ if s, exp := sx.String(), `"goodbye"`; s != exp {
+ t.Errorf(`sx.String() = %q, want %q`, s, exp)
+ }
+}