wip: add ThreshrCli & Spec.

copy over application.yaml from core

cli/pom.xml

@@ -15,7 +15,7 @@
         <micronaut.test.resources.enabled>true</micronaut.test.resources.enabled>
         <micronaut.aot.enabled>false</micronaut.aot.enabled>
         <micronaut.aot.packageName>com.graqr.aot.generated</micronaut.aot.packageName>
-        <exec.mainClass>com.graqr.Application</exec.mainClass>
+        <exec.mainClass>com.graqr.ThreshrCli</exec.mainClass>
     </properties>
     <repositories>
         <repository>

cli/src/main/java/com/graqr/ThreshrCli.java

@@ -0,0 +1,43 @@
+package com.graqr;
+
+import com.graqr.threshr.Threshr;
+import com.graqr.threshr.ThreshrException;
+import com.graqr.threshr.model.queryparam.Tcin;
+import io.micronaut.configuration.picocli.PicocliRunner;
+import jakarta.inject.Singleton;
+import picocli.CommandLine;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Option;
+
+@Singleton
+@Command(name = "threshr grocery query tool", mixinStandardHelpOptions = true)
+public class ThreshrCli implements Runnable {
+
+    Threshr threshr;
+
+    @Option(
+            names = {"--tcin", "-t", "product-id-number"},
+            required = false,
+            description = "", converter = TcinsConverter.class)
+            Tcin[] tcinValues;
+
+    public ThreshrCli(Threshr threshr) {
+        this.threshr = threshr;
+    }
+
+
+    public static void main(String[] args) {
+        PicocliRunner.run(ThreshrCli.class, args);
+    }
+
+    public void run() {
+        // TODO: do all the things :P
+    }
+
+    static class TcinsConverter implements CommandLine.ITypeConverter<Tcin[]> {
+        @Override
+        public Tcin[] convert(String s) throws ThreshrException {
+            return new Tcin[]{new Tcin(s.split(","))};
+        }
+    }
+}

cli/src/main/resources/application.yaml

@@ -0,0 +1,19 @@
+micronaut:
+  application:
+    name: threshr-cli
+---
+datasources:
+  default:
+    driver-class-name: org.postgresql.Driver
+    db-type: postgres
+    schema-generate: CREATE_DROP
+    dialect: POSTGRES
+---
+threshr:
+  key:
+  channel:
+---
+test:
+  datasources:
+    default:
+      url:

cli/src/test/groovy/com/graqr/ThreshrCliSpec.groovy

@@ -1,19 +1,49 @@
 package com.graqr
 
-import io.micronaut.runtime.EmbeddedApplication
+import io.micronaut.configuration.picocli.PicocliRunner
+import io.micronaut.context.ApplicationContext
+import io.micronaut.context.env.Environment
 import io.micronaut.test.extensions.spock.annotation.MicronautTest
-import jakarta.inject.Inject
+import spock.lang.Shared
 import spock.lang.Specification
 
 @MicronautTest
 class ThreshrCliSpec extends Specification {
 
-    @Inject
-    EmbeddedApplication<?> application
 
-    void 'test it works'() {
-        expect:
-        application.running
+    @Shared
+    final PrintStream originalOut = System.out
+    @Shared
+    final PrintStream originalErr = System.err
+
+    @Shared
+    ByteArrayOutputStream outputStream = new ByteArrayOutputStream()
+    ByteArrayOutputStream errStream = new ByteArrayOutputStream()
+
+    void execute(String... args) {
+        try(ApplicationContext ctx = ApplicationContext.run(Environment.CLI, Environment.TEST) as ApplicationContext) {
+            PicocliRunner.run(ThreshrCli, ctx, args)
+        }
+    }
+
+
+    def setup() {
+        outputStream.reset()
+        errStream.reset()
+        System.setOut(new PrintStream(outputStream))
+        System.setErr(new PrintStream(errStream))
+    }
+
+    def cleanup() {
+        System.setOut(originalOut)
+        System.setErr(originalErr)
+    }
+
+    def "cli help can be queried successfully"(){
+        when:
+        execute('--help')
+        then:
+        errStream.toString().trim().contains('Usage:')
     }
 
 }