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Merged
bbakerman merged 3 commits into from
Mar 27, 2022
Merged

Improve NonNullableValueCoercedAsNullException message #2774

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97d55ef
Add full error message for NonNullableValueCoercedAsNullException
dondonz Mar 26, 2022
99a73f0
Add tests for improved NonNullableValueCoercedAsNullException
dondonz Mar 26, 2022
e5db4d5
Remove empty path and improve grammar
dondonz Mar 27, 2022
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9 changes: 9 additions & 0 deletions src/main/java/graphql/execution/NonNullableValueCoercedAsNullException.java
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Expand Up @@ -43,6 +43,15 @@ public NonNullableValueCoercedAsNullException(VariableDefinition variableDefinit
this.path = path;
}

public NonNullableValueCoercedAsNullException(GraphQLType graphQLType) {
super(format("Coerced Null value for NonNull type '%s'", GraphQLTypeUtil.simplePrint(graphQLType)));
}

public NonNullableValueCoercedAsNullException(VariableDefinition variableDefinition, String causeMessage) {
super(format("Variable '%s' has an invalid value: %s", variableDefinition.getName(), causeMessage));
this.sourceLocations = Collections.singletonList(variableDefinition.getSourceLocation());
}

public NonNullableValueCoercedAsNullException(String fieldName, List<Object> path, GraphQLType graphQLType) {
super(format("Field '%s' has coerced Null value for NonNull type '%s'",
fieldName, GraphQLTypeUtil.simplePrint(graphQLType)));
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4 changes: 3 additions & 1 deletion src/main/java/graphql/execution/ValuesResolver.java
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Expand Up @@ -418,6 +418,8 @@ private Map<String, Object> externalValueToInternalValueForVariables(GraphQLSche
.cause(e.getCause())
.sourceLocation(variableDefinition.getSourceLocation())
.build();
} catch (NonNullableValueCoercedAsNullException e) {
throw new NonNullableValueCoercedAsNullException(variableDefinition, e.getMessage());
}
}

Expand Down Expand Up @@ -495,7 +497,7 @@ private Object externalValueToInternalValue(GraphqlFieldVisibility fieldVisibili
Object returnValue =
externalValueToInternalValue(fieldVisibility, unwrapOne(graphQLType), value);
if (returnValue == null) {
throw new NonNullableValueCoercedAsNullException("", emptyList(), graphQLType);
throw new NonNullableValueCoercedAsNullException(graphQLType);
}
return returnValue;
}
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2 changes: 1 addition & 1 deletion src/test/groovy/graphql/Issue743.groovy
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Expand Up @@ -28,6 +28,6 @@ class Issue743 extends Specification {
executionResult.data == null
executionResult.errors.size() == 1
executionResult.errors[0].errorType == ErrorType.ValidationError
executionResult.errors[0].message == "Variable 'isTrue' has coerced Null value for NonNull type 'Boolean!'"
executionResult.errors[0].message == "Variable 'isTrue' has an invalid value: Variable 'isTrue' has coerced Null value for NonNull type 'Boolean!'"
}
}
6 changes: 3 additions & 3 deletions src/test/groovy/graphql/NullVariableCoercionTest.groovy
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@@ -1,6 +1,6 @@
package graphql


import graphql.language.SourceLocation
import graphql.schema.DataFetcher
import graphql.schema.GraphQLObjectType
import graphql.schema.idl.RuntimeWiring
Expand Down Expand Up @@ -68,8 +68,8 @@ class NullVariableCoercionTest extends Specification {
varResult.data == null
varResult.errors.size() == 1
varResult.errors[0].errorType == ErrorType.ValidationError
varResult.errors[0].message == "Field 'baz' has coerced Null value for NonNull type 'String!'"
// varResult.errors[0].locations == [new SourceLocation(1, 11)]
varResult.errors[0].message == "Variable 'input' has an invalid value: Field 'baz' has coerced Null value for NonNull type 'String!'"
varResult.errors[0].locations == [new SourceLocation(1, 11)]
}

def "can handle defaulting on complex input objects"() {
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20 changes: 19 additions & 1 deletion src/test/groovy/graphql/execution/ValuesResolverTest.groovy
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Expand Up @@ -495,7 +495,25 @@ class ValuesResolverTest extends Specification {

then:
def error = thrown(NonNullableValueCoercedAsNullException)
error.message == "Variable 'foo' has coerced Null value for NonNull type 'String!'"
error.message == "Variable 'foo' has an invalid value: Variable 'foo' has coerced Null value for NonNull type 'String!'"
}

def "coerceVariableValues: if variableType is a list of Non-Nullable type, and element value is null, throw a query error"() {
given:
def schema = TestUtil.schemaWithInputType(list(nonNull(GraphQLString)))

def defaultValueForFoo = new ArrayValue([new StringValue("defaultValueForFoo")])
def type = new ListType(new NonNullType(new TypeName("String")))
VariableDefinition fooVarDef = new VariableDefinition("foo", type, defaultValueForFoo)

def variableValuesMap = ["foo": [null]]

when:
resolver.coerceVariableValues(schema, [fooVarDef], variableValuesMap)

then:
def error = thrown(NonNullableValueCoercedAsNullException)
error.message == "Variable 'foo' has an invalid value: Coerced Null value for NonNull type 'String!'"
}

// Note: use NullValue defined in Field when it exists,
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