bkahlert

Mocking non-mocks using mockk / misassignment bug

The Kotlin mocking library mockk lets's you mock a class like this:

class Foo {
    fun foo() = "foo"
}

val foo = mockk<Foo>()
every { foo.foo() } returns "bar" // 👈 make the foo mock return "bar"

bkahlert

/**
 * [Gradle init script](https://docs.gradle.org/current/userguide/init_scripts.html) that has
 * to be places in one of the [documented locations](https://docs.gradle.org/current/userguide/init_scripts.html#sec:using_an_init_script),
 * for example
 * - `$GRADLE_USER_HOME/init.gradle.kts`, respectively
 * - `$HOME/init.gradle.kts
 */
rootProject {
    logger.info("Running init script on $name")

bkahlert

Bash Error Handling — shell options -e/errexit, inherit_errexit, -E/errtrace and the ERR trap

This Markdown file is 90% the output of error_handling.bash.

I wrote the script / this document to describe the shell options errexit, inherit_errexit, and errtrace as well as the ERR trap and their conditions and interactions in more detail as this is what I always failed to understand with the pieces of information I found so far.

References

• shell options: https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html

bkahlert

fun <A, B, C, R> multiReceiver(f: A.() -> B.() -> C.() -> R) = { a: A, b: B, c: C -> f(a)(b)(c) }

val sample1: (X, Y, Z) -> Int = multiReceiver { { { x + y + z } } }
val sample2: X.() -> Y.() -> Z.() -> Int =  { { { x + y + z } } }

class X(val x: Int)
class Y(val y: Int)
class Z(val z: Int)

fun main() {

bkahlert

#!/bin/sh
# Abort script at first error, when a command exits with non-zero status
# (except in until or while loops, if-tests, list constructs)
set -e

# Attempt to use undefined variable outputs error message, and forces an exit
set -u

# Similar to verbose mode (-v), but expands commands
#set -x

bkahlert

package demo;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.Map;

bkahlert

import lombok.SneakyThrows;
import org.springframework.boot.autoconfigure.web.servlet.WebMvcRegistrations;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.MethodParameter;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.lang.NonNull;
import org.springframework.lang.NonNullApi;
import org.springframework.lang.Nullable;
import org.springframework.util.MultiValueMap;