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Add "Replace 'compute' with 'computeIfPresent'" fix

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Helps for IDEA-194058 False-positive warning of producing NullPointerException for Map.compute
This commit is contained in:
Tagir Valeev
2018-06-19 15:07:31 +07:00
parent 42b2531f09
commit ecb2f6c1cf
7 changed files with 158 additions and 0 deletions
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31
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/replaceComputeWithComputeIfPresent/afterCompute.java Normal file
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// "Replace 'compute' with 'computeIfPresent'" "true"
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
class Main {
interface Item {
Integer getInfo(int i);
}
native List<String> getNamesList();
void test(List<Item> infoList) {
Map<String, List<Integer>> data = new HashMap<>();
List<String> names = getNamesList();
for (String key : names) {
data.put(key, new ArrayList<>());
}
for (Item info : infoList) {
for (int i = 0; i < names.size(); i++) {
final String k = names.get(i);
final Integer newValue = info.getInfo(i);
data.computeIfPresent(k, (key, array) -> {
array.add(newValue);
return array;
});
}
}
}
}

31
java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/replaceComputeWithComputeIfPresent/beforeCompute.java Normal file
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@@ -0,0 +1,31 @@
// "Replace 'compute' with 'computeIfPresent'" "true"
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
class Main {
interface Item {
Integer getInfo(int i);
}
native List<String> getNamesList();
void test(List<Item> infoList) {
Map<String, List<Integer>> data = new HashMap<>();
List<String> names = getNamesList();
for (String key : names) {
data.put(key, new ArrayList<>());
}
for (Item info : infoList) {
for (int i = 0; i < names.size(); i++) {
final String k = names.get(i);
final Integer newValue = info.getInfo(i);
data.compute(k, (key, array) -> {
array.a<caret>dd(newValue);
return array;
});
}
}
}
}