chore: update tests to use the sampler

After adding @DictionaryProvider to IntegralMutatorFactory, the selection of
mutation functions now does an addition step that runs through
weightedSampler, that selects whether to stay in the selection or
do an additional step and select the alias.

Author: oetr

src/test/java/com/code_intelligence/jazzer/mutation/mutator/aggregate/RecordMutatorTest.java

@@ -74,6 +74,7 @@ void testSimpleTypesRecord() {
             // Mutate second component, in range operation, return 23
             1,
             2,
+            0.1, // sampler: we stay in the second function: direct value in range
             23L)) {
       SimpleTypesRecord inited = mutator.init(prng);
       assertThat(inited).isNotNull();

src/test/java/com/code_intelligence/jazzer/mutation/mutator/collection/ArrayMutatorTest.java

@@ -210,6 +210,7 @@ void testChangeSingleElement() {
             // mutation choice based on `IntegralMutatorFactory`
             // 2 == closedRange
             2,
+            0.1, // sampler: we stay in the closed range mutation
             // value
             55L)) {
       arr = mutator.mutate(arr, prng);

src/test/java/com/code_intelligence/jazzer/mutation/mutator/collection/ListMutatorTest.java

@@ -181,6 +181,7 @@ void testChangeSingleElement() {
             // mutation choice based on `IntegralMutatorFactory`
             // 2 == closedRange
             2,
+            0.1, // sampler: stay in closedRange mutation
             // value
             55L)) {
       list = mutator.mutate(list, prng);
@@ -205,10 +206,12 @@ void testChangeChunk() {
             5,
             // mutation: 0 == bitflip
             0,
+            0.1, // sampler: stay in bitflip mutation
             // shift constant
             13,
             // and again
             0,
+            0.1, // sampler: stay in bitflip mutation
             12)) {
       list = mutator.mutate(list, prng);
     }

src/test/java/com/code_intelligence/jazzer/mutation/mutator/collection/MapMutatorTest.java

@@ -146,10 +146,12 @@ void mapMutateValues() {
             3,
             // uniform pick
             2,
+            0.1, // sampler: stay in uniform pick
             // random integer
             41L,
             // uniform pick
             2,
+            0.1, // sampler: stay in uniform pick
             // random integer
             51L)) {
       map = mutator.mutate(map, prng);
@@ -176,10 +178,12 @@ void mapMutateKeys() {
             3,
             // uniform pick
             2,
+            0.1, // sampler: stay in uniform pick
             // integer
             7L,
             // uniform pick
             2,
+            0.1, // sampler: stay in uniform pick
             // random integer
             8L)) {
       map = mutator.mutate(map, prng);