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How to use checkCanUseTempFolderAndRecordWhatItWas method of specs.JUnitRuleExample class

Best Spectrum code snippet using specs.JUnitRuleExample.checkCanUseTempFolderAndRecordWhatItWas

Source:JUnitRuleExample.java

...46    final Set<File> ruleProvidedFoldersSeen = new HashSet<>();47    describe("A spec with a rule mix-in", () -> {48      Supplier<TempFolderRuleMixin> tempFolderRuleMixin = junitMixin(TempFolderRuleMixin.class);49      it("has access to the rule-provided object at the top level", () -> {50        checkCanUseTempFolderAndRecordWhatItWas(ruleProvidedFoldersSeen, tempFolderRuleMixin);51      });52      describe("with a nested set of specs", () -> {53        it("can access the rule-provided object within the nested spec", () -> {54          checkCanUseTempFolderAndRecordWhatItWas(ruleProvidedFoldersSeen, tempFolderRuleMixin);55        });56        it("can access the rule-provided object over and over", () -> {57          checkCanUseTempFolderAndRecordWhatItWas(ruleProvidedFoldersSeen, tempFolderRuleMixin);58        });59      });60      it("has received a different instance of the rule-provided object each time", () -> {61        assertThat(ruleProvidedFoldersSeen.size(), is(3));62      });63      describe("with just a beforeClass mixin", () -> {64        Supplier<JUnitBeforeClassExample> mixin = junitMixin(JUnitBeforeClassExample.class);65        it("the mixin's before class has been called", () -> {66          assertThat(JUnitBeforeClassExample.value, is("Hello world"));67        });68      });69      it("has also initialised a class member owing to a local JUnit annotation", () -> {70        assertThat(classValue, is("initialised"));71      });72    });73    describe("A spec with a rule mix-in where the rule is provided by method", () -> {74      Supplier<TempFolderRuleProvidedViaMethodMixin> tempFolderRuleMixin =75          junitMixin(TempFolderRuleProvidedViaMethodMixin.class);76      it("has access to an initialised object", () -> {77        assertNotNull(tempFolderRuleMixin.get().getFolder().getRoot());78      });79    });80  }81  private void checkCanUseTempFolderAndRecordWhatItWas(Set<File> filesSeen,82      Supplier<TempFolderRuleMixin> tempFolderRuleMixin) {83    assertNotNull(tempFolderRuleMixin.get().tempFolderRule.getRoot());84    filesSeen.add(tempFolderRuleMixin.get().tempFolderRule.getRoot());85  }86}...

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