Add test coverage for io.flutter.run package including SdkFields fix

src/io/flutter/run/SdkFields.java

@@ -93,7 +93,8 @@ public boolean hasAdditionalArgs() {
   public String[] getAdditionalArgsParsed() {
     if (hasAdditionalArgs()) {
       assert additionalArgs != null;
-      return ParametersListUtil.parse(additionalArgs, false, true, true).toArray(new String[0]);
+      return ParametersListUtil.parse(additionalArgs, false, false, true).stream().filter(s -> !s.isEmpty())
+          .toArray(String[]::new);
     }
 
     return new String[0];
@@ -115,7 +116,8 @@ public boolean hasAttachArgs() {
   public String[] getAttachArgsParsed() {
     if (hasAttachArgs()) {
       assert attachArgs != null;
-      return ParametersListUtil.parse(attachArgs, false, true, true).toArray(new String[0]);
+      return ParametersListUtil.parse(attachArgs, false, false, true).stream().filter(s -> !s.isEmpty())
+          .toArray(String[]::new);
     }
     return new String[0];
   }

testSrc/unit/io/flutter/run/SdkFieldsTest.java

@@ -67,23 +67,29 @@ public void roundTripShouldPreserveFields() {
   @Test
   public void supportsSpacesInAdditionalArgs() {
     final SdkFields sdkFields = new SdkFields();
-    sdkFields.setAdditionalArgs("--dart-define='VALUE=foo bar' --other=baz");
-
-    assertArrayEquals(new String[]{
-      "--dart-define=VALUE=foo bar",
-      "--other=baz"
-    }, sdkFields.getAdditionalArgsParsed());
+    sdkFields.setAdditionalArgs("  --dart-define=\"VALUE=foo bar\"  ");
+    assertArrayEquals(new String[] { "--dart-define=VALUE=foo bar" }, sdkFields.getAdditionalArgsParsed());
   }
 
   @Test
   public void supportsSpacesInAttachArgs() {
     final SdkFields sdkFields = new SdkFields();
-    sdkFields.setAttachArgs("--dart-define='VALUE=foo bar' --other=baz");
+    sdkFields.setAttachArgs("  --dart-define=\"VALUE=foo bar\"  ");
+    assertArrayEquals(new String[] { "--dart-define=VALUE=foo bar" }, sdkFields.getAttachArgsParsed());
+  }
+
+  @Test
+  public void getAdditionalArgsParsed_edgeCases() {
+    final SdkFields sdkFields = new SdkFields();
+
+    sdkFields.setAdditionalArgs(null);
+    assertEquals(0, sdkFields.getAdditionalArgsParsed().length);
+
+    sdkFields.setAdditionalArgs("   ");
+    assertArrayEquals(new String[0], sdkFields.getAdditionalArgsParsed());
 
-    assertArrayEquals(new String[]{
-      "--dart-define=VALUE=foo bar",
-      "--other=baz"
-    }, sdkFields.getAttachArgsParsed());
+    sdkFields.setAdditionalArgs("  --foo   --bar  ");
+    assertArrayEquals(new String[] { "--foo", "--bar" }, sdkFields.getAdditionalArgsParsed());
   }
 
   private void addOption(Element elt, String name, String value) {

testSrc/unit/io/flutter/run/bazel/BazelFieldsTest.java

@@ -65,9 +65,18 @@ public void roundTripShouldPreserveFields() {
     assertEquals("bazel_or_dart_target", after.getTarget());
     assertEquals("bazel_args --1 -2=3", after.getBazelArgs());
     assertEquals("additional_args --1 --2=3", after.getAdditionalArgs());
+
     assertTrue(after.getEnableReleaseMode());
   }
 
+  @Test
+  public void constructorHandlesNulls() {
+    final BazelFields fields = new BazelFields(null, null, null, false);
+    assertNull(fields.getTarget());
+    assertNull(fields.getBazelArgs());
+    assertNull(fields.getAdditionalArgs());
+  }
+
   private void addOption(Element elt, String name, String value) {
     final Element child = new Element("option");
     child.setAttribute("name", name);

testSrc/unit/io/flutter/run/bazelTest/BazelTestFieldsTest.java

@@ -70,6 +70,15 @@ public void roundTripShouldPreserveFields() {
     assertEquals("--no-watch --other-args", after.getAdditionalArgs());
   }
 
+  @Test
+  public void constructorHandlesNulls() {
+    final BazelTestFields fields = new BazelTestFields(null, null, null, null);
+    assertNull(fields.getTestName());
+    assertNull(fields.getEntryFile());
+    assertNull(fields.getBazelTarget());
+    assertNull(fields.getAdditionalArgs());
+  }
+
   private void addOption(Element elt, String name, String value) {
     final Element child = new Element("option");
     child.setAttribute("name", name);