add version.List

list_test.go

@@ -0,0 +1,49 @@
+package version
+
+import (
+	"sort"
+	"testing"
+)
+
+func TestListSort(t *testing.T) {
+	type TestCase struct {
+		Input    List
+		Expected List
+	}
+
+	testCases := []TestCase{
+		{
+			Input:    List{MustParse("1.1.1"), MustParse("1.0.1"), MustParse("1.1.0"), MustParse("1.0.0")},
+			Expected: List{MustParse("1.0.0"), MustParse("1.0.1"), MustParse("1.1.0"), MustParse("1.1.1")},
+		},
+		{
+			Input:    List{MustParse("4.0.0"), MustParse("3.0.0"), MustParse("2.0.0"), MustParse("1.0.0")},
+			Expected: List{MustParse("1.0.0"), MustParse("2.0.0"), MustParse("3.0.0"), MustParse("4.0.0")},
+		},
+		{
+			Input:    List{MustParse("2.0.4"), MustParse("1.2.4"), MustParse("1.2.3"), MustParse("1.3.1")},
+			Expected: List{MustParse("1.2.3"), MustParse("1.2.4"), MustParse("1.3.1"), MustParse("2.0.4")},
+		},
+	}
+
+	for i, testCase := range testCases {
+		actual := List{}
+		actual = append(actual, testCase.Input...)
+
+		sort.Stable(actual)
+
+		ok := true
+		for j, v := range actual {
+			expected := testCase.Expected[j]
+			cmp := v.Compare(expected)
+			if cmp != 0 {
+				ok = false
+				t.Errorf("test %d failed at position %d (expected %s, got %s)", i, j, expected, actual)
+			}
+		}
+
+		if ok {
+			t.Logf("test %d passed", i)
+		}
+	}
+}