Add map valued (string->string, string->int) flags. (#133)

Format: --myflag=a=1,b=2

1 files changed, 156 insertions, 0 deletions

diff --git a/string_to_int_test.go b/string_to_int_test.go
new file mode 100644
index 0000000..b60bbaf
--- /dev/null
+++ b/string_to_int_test.go
@@ -0,0 +1,156 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of ths2i source code s2i governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package pflag
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+	"testing"
+)
+
+func setUpS2IFlagSet(s2ip *map[string]int) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.StringToIntVar(s2ip, "s2i", map[string]int{}, "Command separated ls2it!")
+	return f
+}
+
+func setUpS2IFlagSetWithDefault(s2ip *map[string]int) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.StringToIntVar(s2ip, "s2i", map[string]int{"a": 1, "b": 2}, "Command separated ls2it!")
+	return f
+}
+
+func createS2IFlag(vals map[string]int) string {
+	var buf bytes.Buffer
+	i := 0
+	for k, v := range vals {
+		if i > 0 {
+			buf.WriteRune(',')
+		}
+		buf.WriteString(k)
+		buf.WriteRune('=')
+		buf.WriteString(strconv.Itoa(v))
+		i++
+	}
+	return buf.String()
+}
+
+func TestEmptyS2I(t *testing.T) {
+	var s2i map[string]int
+	f := setUpS2IFlagSet(&s2i)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getS2I, err := f.GetStringToInt("s2i")
+	if err != nil {
+		t.Fatal("got an error from GetStringToInt():", err)
+	}
+	if len(getS2I) != 0 {
+		t.Fatalf("got s2i %v with len=%d but expected length=0", getS2I, len(getS2I))
+	}
+}
+
+func TestS2I(t *testing.T) {
+	var s2i map[string]int
+	f := setUpS2IFlagSet(&s2i)
+
+	vals := map[string]int{"a": 1, "b": 2, "d": 4, "c": 3}
+	arg := fmt.Sprintf("--s2i=%s", createS2IFlag(vals))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for k, v := range s2i {
+		if vals[k] != v {
+			t.Fatalf("expected s2i[%s] to be %d but got: %d", k, vals[k], v)
+		}
+	}
+	getS2I, err := f.GetStringToInt("s2i")
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	for k, v := range getS2I {
+		if vals[k] != v {
+			t.Fatalf("expected s2i[%s] to be %d but got: %d from GetStringToInt", k, vals[k], v)
+		}
+	}
+}
+
+func TestS2IDefault(t *testing.T) {
+	var s2i map[string]int
+	f := setUpS2IFlagSetWithDefault(&s2i)
+
+	vals := map[string]int{"a": 1, "b": 2}
+
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for k, v := range s2i {
+		if vals[k] != v {
+			t.Fatalf("expected s2i[%s] to be %d but got: %d", k, vals[k], v)
+		}
+	}
+
+	getS2I, err := f.GetStringToInt("s2i")
+	if err != nil {
+		t.Fatal("got an error from GetStringToInt():", err)
+	}
+	for k, v := range getS2I {
+		if vals[k] != v {
+			t.Fatalf("expected s2i[%s] to be %d from GetStringToInt but got: %d", k, vals[k], v)
+		}
+	}
+}
+
+func TestS2IWithDefault(t *testing.T) {
+	var s2i map[string]int
+	f := setUpS2IFlagSetWithDefault(&s2i)
+
+	vals := map[string]int{"a": 1, "b": 2}
+	arg := fmt.Sprintf("--s2i=%s", createS2IFlag(vals))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for k, v := range s2i {
+		if vals[k] != v {
+			t.Fatalf("expected s2i[%s] to be %d but got: %d", k, vals[k], v)
+		}
+	}
+
+	getS2I, err := f.GetStringToInt("s2i")
+	if err != nil {
+		t.Fatal("got an error from GetStringToInt():", err)
+	}
+	for k, v := range getS2I {
+		if vals[k] != v {
+			t.Fatalf("expected s2i[%s] to be %d from GetStringToInt but got: %d", k, vals[k], v)
+		}
+	}
+}
+
+func TestS2ICalledTwice(t *testing.T) {
+	var s2i map[string]int
+	f := setUpS2IFlagSet(&s2i)
+
+	in := []string{"a=1,b=2", "b=3"}
+	expected := map[string]int{"a": 1, "b": 3}
+	argfmt := "--s2i=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range s2i {
+		if expected[i] != v {
+			t.Fatalf("expected s2i[%s] to be %d but got: %d", i, expected[i], v)
+		}
+	}
+}