Add test for GoCommentReformatter (#2559)

Add test for GoCommentReformatter.

Updates #722

src/test/java/com/google/api/codegen/util/go/GoCommentReformatterTest.java

@@ -0,0 +1,163 @@
+/* Copyright 2019 Google LLC
+ *
+ * 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
+ *
+ *      https://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 com.google.api.codegen.util.go;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Test;
+
+public class GoCommentReformatterTest {
+
+  @Test
+  public void testBulletList() throws Exception {
+    String comment =
+        new StringBuilder()
+            .append("A list of items:")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("* List item 1")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("* List item 2")
+            .append(System.lineSeparator())
+            .append("  * which has a nested item")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("* List item 3")
+            .append(System.lineSeparator())
+            .append("  which continues on a second line")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("End list.")
+            .toString();
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment =
+        new StringBuilder()
+            .append("A list of items:  ")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("  List item 1")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("  List item 2    ")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("    which has a nested item")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("  List item 3")
+            .append(System.lineSeparator())
+            .append("  which continues on a second line")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("End list.")
+            .toString();
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+
+  @Test
+  public void testCode() throws Exception {
+    String comment = "Some `inline code` here.";
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment = "Some inline code here.";
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+
+  @Test
+  public void testEmphasis() throws Exception {
+    String comment = "An *emphasized* statement.";
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment = "An emphasized statement.";
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+
+  @Test
+  public void testHtmlInline() throws Exception {
+    String comment = "Some <span>inline html</span> here.";
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment = "Some <span>inline html</span> here.";
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+
+  @Test
+  public void testHtmlBlock() throws Exception {
+    String comment =
+        new StringBuilder()
+            .append("A block of html:  ")
+            .append(System.lineSeparator())
+            .append("<p>")
+            .append(System.lineSeparator())
+            .append("A paragraph here.")
+            .append(System.lineSeparator())
+            .append("</p>")
+            .append(System.lineSeparator())
+            .append("End html block.")
+            .toString();
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment =
+        new StringBuilder()
+            .append("A block of html:<p>")
+            .append(System.lineSeparator())
+            .append("A paragraph here.")
+            .append(System.lineSeparator())
+            .append("</p>")
+            .append(System.lineSeparator())
+            .append("End html block.")
+            .toString();
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+
+  @Test
+  public void testParagraph() throws Exception {
+    String comment =
+        new StringBuilder()
+            .append("A paragraph.")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("A second paragraph.")
+            .toString();
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment =
+        new StringBuilder()
+            .append("A paragraph.")
+            .append(System.lineSeparator())
+            .append(System.lineSeparator())
+            .append("A second paragraph.")
+            .toString();
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+
+  @Test
+  public void testLink() throws Exception {
+    String comment = "Some [linked text](https://cloud.google.com) here.";
+
+    String formatted = new GoCommentReformatter().reformat(comment);
+
+    String expectedComment = "Some linked text (at https://cloud.google.com) here.";
+    assertThat(formatted).isEqualTo(expectedComment);
+  }
+}