1 files changed, 133 insertions, 0 deletions
diff --git a/src/pkg/strings/strings_test.go b/src/pkg/strings/strings_test.go
new file mode 100644
index 000000000..05e662032
--- /dev/null
+++ b/src/pkg/strings/strings_test.go
@@ -0,0 +1,133 @@
+// 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 strings
+
+import (
+	"strings";
+	"testing";
+)
+
+func eq(a, b []string) bool {
+	if len(a) != len(b) {
+		return false;
+	}
+	for i := 0; i < len(a); i++ {
+		if a[i] != b[i] {
+			return false;
+		}
+	}
+	return true;
+}
+
+var abcd = "abcd";
+var faces = "☺☻☹";
+var commas = "1,2,3,4";
+var dots = "1....2....3....4";
+
+type ExplodeTest struct {
+	s string;
+	a []string;
+}
+var explodetests = []ExplodeTest {
+	ExplodeTest{ abcd,	[]string{"a", "b", "c", "d"} },
+	ExplodeTest{ faces,	[]string{"☺", "☻", "☹" } },
+}
+func TestExplode(t *testing.T) {
+	for i := 0; i < len(explodetests); i++ {
+		tt := explodetests[i];
+		a := Explode(tt.s);
+		if !eq(a, tt.a) {
+			t.Errorf("Explode(%q) = %v; want %v", tt.s, a, tt.a);
+			continue;
+		}
+		s := Join(a, "");
+		if s != tt.s {
+			t.Errorf(`Join(Explode(%q), "") = %q`, tt.s, s);
+		}
+	}
+}
+
+type SplitTest struct {
+	s string;
+	sep string;
+	a []string;
+}
+var splittests = []SplitTest {
+	SplitTest{ abcd,	"a",	[]string{"", "bcd"} },
+	SplitTest{ abcd,	"z",	[]string{"abcd"} },
+	SplitTest{ abcd,	"",	[]string{"a", "b", "c", "d"} },
+	SplitTest{ commas,	",",	[]string{"1", "2", "3", "4"} },
+	SplitTest{ dots,	"...",	[]string{"1", ".2", ".3", ".4"} },
+	SplitTest{ faces,	"☹",	[]string{"☺☻", ""} },
+	SplitTest{ faces,	"~",	[]string{faces} },
+	SplitTest{ faces,	"",	[]string{"☺", "☻", "☹"} },
+}
+func TestSplit(t *testing.T) {
+	for i := 0; i < len(splittests); i++ {
+		tt := splittests[i];
+		a := Split(tt.s, tt.sep);
+		if !eq(a, tt.a) {
+			t.Errorf("Split(%q, %q) = %v; want %v", tt.s, tt.sep, a, tt.a);
+			continue;
+		}
+		s := Join(a, tt.sep);
+		if s != tt.s {
+			t.Errorf("Join(Split(%q, %q), %q) = %q", tt.s, tt.sep, tt.sep, s);
+		}
+	}
+}
+
+// Test case for any function which accepts and returns a single string.
+type StringTest struct {
+	in, out string;
+}
+
+// Execute f on each test case.  funcName should be the name of f; it's used
+// in failure reports.
+func runStringTests(t *testing.T, f func(string) string, funcName string, testCases []StringTest) {
+	for i, tc := range testCases {
+		actual := f(tc.in);
+		if (actual != tc.out) {
+			t.Errorf("%s(%q) = %q; want %q", funcName, tc.in, actual, tc.out);
+		}
+	}
+}
+
+var upperASCIITests = []StringTest {
+	StringTest{"", ""},
+	StringTest{"abc", "ABC"},
+	StringTest{"AbC123", "ABC123"},
+	StringTest{"azAZ09_", "AZAZ09_"}
+}
+
+var lowerASCIITests = []StringTest {
+	StringTest{"", ""},
+	StringTest{"abc", "abc"},
+	StringTest{"AbC123", "abc123"},
+	StringTest{"azAZ09_", "azaz09_"}
+}
+
+var trimSpaceASCIITests = []StringTest {
+	StringTest{"", ""},
+	StringTest{"abc", "abc"},
+	StringTest{" ", ""},
+	StringTest{" \t\r\n \t\t\r\r\n\n ", ""},
+	StringTest{" \t\r\n x\t\t\r\r\n\n ", "x"},
+	StringTest{" \t\r\n x\t\t\r\r\ny\n ", "x\t\t\r\r\ny"},
+	StringTest{"1 \t\r\n2", "1 \t\r\n2"},
+}
+
+func TestUpperASCII(t *testing.T) {
+	runStringTests(t, UpperASCII, "UpperASCII", upperASCIITests);
+}
+
+func TestLowerASCII(t *testing.T) {
+	runStringTests(t, LowerASCII, "LowerASCII", lowerASCIITests);
+}
+
+func TestTrimSpaceASCII(t *testing.T) {
+	runStringTests(t, TrimSpaceASCII, "TrimSpaceASCII", trimSpaceASCIITests);
+}
+