Move scheduler interface to pkg/scheduler/framework

pkg/scheduler/framework/interface_test.go

@@ -0,0 +1,122 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package framework
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestStatus(t *testing.T) {
+	tests := []struct {
+		status            *Status
+		expectedCode      Code
+		expectedMessage   string
+		expectedIsSuccess bool
+		expectedAsError   error
+	}{
+		{
+			status:            NewStatus(Success, ""),
+			expectedCode:      Success,
+			expectedMessage:   "",
+			expectedIsSuccess: true,
+			expectedAsError:   nil,
+		},
+		{
+			status:            NewStatus(Error, "unknown error"),
+			expectedCode:      Error,
+			expectedMessage:   "unknown error",
+			expectedIsSuccess: false,
+			expectedAsError:   errors.New("unknown error"),
+		},
+		{
+			status:            nil,
+			expectedCode:      Success,
+			expectedMessage:   "",
+			expectedIsSuccess: true,
+			expectedAsError:   nil,
+		},
+	}
+
+	for i, test := range tests {
+		if test.status.Code() != test.expectedCode {
+			t.Errorf("test #%v, expect status.Code() returns %v, but %v", i, test.expectedCode, test.status.Code())
+		}
+
+		if test.status.Message() != test.expectedMessage {
+			t.Errorf("test #%v, expect status.Message() returns %v, but %v", i, test.expectedMessage, test.status.Message())
+		}
+
+		if test.status.IsSuccess() != test.expectedIsSuccess {
+			t.Errorf("test #%v, expect status.IsSuccess() returns %v, but %v", i, test.expectedIsSuccess, test.status.IsSuccess())
+		}
+
+		if test.status.AsError() == test.expectedAsError {
+			continue
+		}
+
+		if test.status.AsError().Error() != test.expectedAsError.Error() {
+			t.Errorf("test #%v, expect status.AsError() returns %v, but %v", i, test.expectedAsError, test.status.AsError())
+		}
+	}
+}
+
+// The String() method relies on the value and order of the status codes to function properly.
+func TestStatusCodes(t *testing.T) {
+	assertStatusCode(t, Success, 0)
+	assertStatusCode(t, Error, 1)
+	assertStatusCode(t, Unschedulable, 2)
+	assertStatusCode(t, UnschedulableAndUnresolvable, 3)
+	assertStatusCode(t, Wait, 4)
+	assertStatusCode(t, Skip, 5)
+}
+
+func assertStatusCode(t *testing.T, code Code, value int) {
+	if int(code) != value {
+		t.Errorf("Status code %q should have a value of %v but got %v", code.String(), value, int(code))
+	}
+}
+
+func TestPluginToStatusMerge(t *testing.T) {
+	tests := []struct {
+		statusMap PluginToStatus
+		wantCode  Code
+	}{
+		{
+			statusMap: PluginToStatus{"p1": NewStatus(Error), "p2": NewStatus(Unschedulable)},
+			wantCode:  Error,
+		},
+		{
+			statusMap: PluginToStatus{"p1": NewStatus(Success), "p2": NewStatus(Unschedulable)},
+			wantCode:  Unschedulable,
+		},
+		{
+			statusMap: PluginToStatus{"p1": NewStatus(Success), "p2": NewStatus(UnschedulableAndUnresolvable), "p3": NewStatus(Unschedulable)},
+			wantCode:  UnschedulableAndUnresolvable,
+		},
+		{
+			wantCode: Success,
+		},
+	}
+
+	for i, test := range tests {
+		gotStatus := test.statusMap.Merge()
+		if test.wantCode != gotStatus.Code() {
+			t.Errorf("test #%v, wantCode %v, gotCode %v", i, test.wantCode, gotStatus.Code())
+		}
+	}
+}