assertj: `NullPointerException` in `isEqualTo` assertion
Summary
see https://github.com/Turbo87/intellij-emberjs/pull/246
java.lang.NullPointerException
at java.util.regex.Matcher.getTextLength(Matcher.java:1283)
at java.util.regex.Matcher.reset(Matcher.java:309)
at java.util.regex.Matcher.<init>(Matcher.java:229)
at java.util.regex.Pattern.matcher(Pattern.java:1093)
at java.util.Formatter.parse(Formatter.java:2547)
at java.util.Formatter.format(Formatter.java:2501)
at java.util.Formatter.format(Formatter.java:2455)
at java.lang.String.format(String.java:2940)
at org.assertj.core.api.AbstractStringAssert.isEqualTo(AbstractStringAssert.java:310)
at org.assertj.core.api.StringAssert$ByteBuddy$gUBfusQU.isEqualTo$accessor$e5ipmL7L(Unknown Source)
at org.assertj.core.api.StringAssert$ByteBuddy$gUBfusQU$AssertJ$SoftProxies$xRrT7HuB.call(Unknown Source)
at org.assertj.core.api.ErrorCollector.intercept(ErrorCollector.java:58)
at org.assertj.core.api.StringAssert$ByteBuddy$gUBfusQU.isEqualTo(Unknown Source)
at org.assertj.core.api.StringAssert$ByteBuddy$gUBfusQU.isEqualTo(Unknown Source)
About this issue
- Original URL
- State: closed
- Created 5 years ago
- Reactions: 1
- Comments: 17 (14 by maintainers)
I just had a look at this one and it looks like this one only happens if assertj is used from Kotlin. A simple example which reproduces this one:
As shown in the provided stacktrace we end up in:
https://github.com/joel-costigliola/assertj-core/blob/2c57b2b4e470a0a7ff50ee64cbc7d27c02303893/src/main/java/org/assertj/core/api/AbstractStringAssert.java#L309-L311
We are heading into the nullpointer since
expectedStringTemplate
is null.