Added Some Tools to GsonUtil

[holmes/common.git] / holmes-actions / src / test / java / org / onap / holmes / common / utils / GsonUtilTest.java

diff --git a/holmes-actions/src/test/java/org/onap/holmes/common/utils/GsonUtilTest.java b/holmes-actions/src/test/java/org/onap/holmes/common/utils/GsonUtilTest.java
new file mode 100644 (file)
index 0000000..ebba1d2
--- /dev/null
+++ b/holmes-actions/src/test/java/org/onap/holmes/common/utils/GsonUtilTest.java
@@ -0,0 +1,146 @@
+/**
+ * Copyright 2020 ZTE Corporation.
+ *
+ * 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 org.onap.holmes.common.utils;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonParser;
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+import static org.hamcrest.core.Is.is;
+import static org.hamcrest.core.IsEqual.equalTo;
+import static org.junit.Assert.assertThat;
+
+public class GsonUtilTest {
+
+    private final TestBean bean1 = new TestBean("onap1", 10, 10f, 10d);
+    private final TestBean bean2 = new TestBean("onap2", 20, 20f, 20d);
+    private final Gson gson = new Gson();
+
+    @Test
+    public void beanToJson() {
+        String expected = gson.toJson(bean1);
+        String actual = GsonUtil.beanToJson(bean1);
+        assertThat(actual, equalTo(expected));
+    }
+
+    @Test
+    public void jsonToBean() {
+        TestBean expected = bean1;
+        TestBean actual = GsonUtil.jsonToBean(gson.toJson(expected), TestBean.class);
+        assertThat(expected.getString(), equalTo(actual.getString()));
+        assertThat(expected.getInteger(), equalTo(actual.getInteger()));
+        assertThat(expected.getaDouble(), equalTo(actual.getaDouble()));
+        assertThat(expected.getaFloat(), equalTo(actual.getaFloat()));
+    }
+
+    @Test
+    public void jsonToList() {
+        List<TestBean> expected = Arrays.asList( bean1, bean2);
+        List<TestBean> actual = GsonUtil.jsonToList(gson.toJson(expected), TestBean.class);
+
+        assertThat(expected.size(), equalTo(actual.size()));
+        for (TestBean tb : expected) {
+            assertThat(actual.contains(tb), is(true));
+        }
+    }
+
+    @Test
+    public void jsonToListMaps() {
+        List<Map<String, TestBean>> actual = GsonUtil.jsonToListMaps(
+                "[{\"onap1\":{\"string\":\"onap1\",\"integer\":10,\"aFloat\":10.0,\"aDouble\":10.0}},"
+                 + "{\"onap2\":{\"string\":\"onap2\",\"integer\":20,\"aFloat\":20.0,\"aDouble\":20.0}}]", TestBean.class);
+
+        assertThat(actual.get(0).get("onap1"), equalTo(new TestBean("onap1", 10, 10f, 10d)));
+        assertThat(actual.get(1).get("onap2"), equalTo(new TestBean("onap2", 20, 20f, 20d)));
+    }
+
+    @Test
+    public void jsonToMap() {
+        Map<String, TestBean> actual = GsonUtil
+                .jsonToMap("{\"onap1\":{\"string\":\"onap1\",\"integer\":10,\"aFloat\":10.0,\"aDouble\":10.0}}", TestBean.class);
+        assertThat(actual.get("onap1"), equalTo(new TestBean("onap1", 10, 10f, 10d)));
+    }
+
+    @Test
+    public void getAsString() {
+        assertThat("onap1",
+                equalTo(GsonUtil.getAsString(JsonParser.parseString(GsonUtil.beanToJson(bean1)).getAsJsonObject(),"string")));
+    }
+
+    @Test
+    public void getAsLong() {
+        assertThat(10L,
+                is(GsonUtil.getAsLong(JsonParser.parseString(GsonUtil.beanToJson(bean1)).getAsJsonObject(),"integer")));
+    }
+
+    @Test
+    public void getAsInt() {
+        assertThat(10,
+                is(GsonUtil.getAsInt(JsonParser.parseString(GsonUtil.beanToJson(bean1)).getAsJsonObject(),"integer")));
+    }
+}
+
+class TestBean {
+    private String string;
+    private int integer;
+    private float aFloat;
+    private double aDouble;
+
+    public TestBean(String string, int integer, float aFloat, double aDouble) {
+        this.string = string;
+        this.integer = integer;
+        this.aFloat = aFloat;
+        this.aDouble = aDouble;
+    }
+
+    public String getString() {
+        return string;
+    }
+
+    public int getInteger() {
+        return integer;
+    }
+
+    public float getaFloat() {
+        return aFloat;
+    }
+
+    public double getaDouble() {
+        return aDouble;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == null || ! (o instanceof TestBean)) {
+            return false;
+        }
+
+        return  string.equals(((TestBean) o).string)
+                && integer == ((TestBean) o).integer
+                && aDouble == ((TestBean) o).aDouble
+                && aFloat == ((TestBean) o).aFloat;
+    }
+
+    @Override
+    public int hashCode() {
+        return string.hashCode();
+    }
+}
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