java/kotlin_test.go - SHIFTPHONES/android_build_soong - Gitiles

 // Copyright 2017 Google Inc. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 package java

 import (
 	"strconv"
 	"strings"
 	"testing"

 	"android/soong/android"
 )

 func TestKotlin(t *testing.T) {
 	ctx, _ := testJava(t, `
 		java_library {
 			name: "foo",
 			srcs: ["a.java", "b.kt"],
 		}

 		java_library {
 			name: "bar",
 			srcs: ["b.kt"],
 			libs: ["foo"],
 			static_libs: ["baz"],
 		}

 		java_library {
 			name: "baz",
 			srcs: ["c.java"],
 		}
 		`)

 	fooKotlinc := ctx.ModuleForTests("foo", "android_common").Rule("kotlinc")
 	fooJavac := ctx.ModuleForTests("foo", "android_common").Rule("javac")
 	fooJar := ctx.ModuleForTests("foo", "android_common").Output("combined/foo.jar")

 	if len(fooKotlinc.Inputs) != 2 || fooKotlinc.Inputs[0].String() != "a.java" ||
 		fooKotlinc.Inputs[1].String() != "b.kt" {
 		t.Errorf(`foo kotlinc inputs %v != ["a.java", "b.kt"]`, fooKotlinc.Inputs)
 	}

 	if len(fooJavac.Inputs) != 1 || fooJavac.Inputs[0].String() != "a.java" {
 		t.Errorf(`foo inputs %v != ["a.java"]`, fooJavac.Inputs)
 	}

 	if !strings.Contains(fooJavac.Args["classpath"], fooKotlinc.Output.String()) {
 		t.Errorf("foo classpath %v does not contain %q",
 			fooJavac.Args["classpath"], fooKotlinc.Output.String())
 	}

 	if !inList(fooKotlinc.Output.String(), fooJar.Inputs.Strings()) {
 		t.Errorf("foo jar inputs %v does not contain %q",
 			fooJar.Inputs.Strings(), fooKotlinc.Output.String())
 	}

 	fooHeaderJar := ctx.ModuleForTests("foo", "android_common").Output("turbine-combined/foo.jar")
 	bazHeaderJar := ctx.ModuleForTests("baz", "android_common").Output("turbine-combined/baz.jar")
 	barKotlinc := ctx.ModuleForTests("bar", "android_common").Rule("kotlinc")

 	if len(barKotlinc.Inputs) != 1 || barKotlinc.Inputs[0].String() != "b.kt" {
 		t.Errorf(`bar kotlinc inputs %v != ["b.kt"]`, barKotlinc.Inputs)
 	}

 	if !inList(fooHeaderJar.Output.String(), barKotlinc.Implicits.Strings()) {
 		t.Errorf(`expected %q in bar implicits %v`,
 			fooHeaderJar.Output.String(), barKotlinc.Implicits.Strings())
 	}

 	if !inList(bazHeaderJar.Output.String(), barKotlinc.Implicits.Strings()) {
 		t.Errorf(`expected %q in bar implicits %v`,
 			bazHeaderJar.Output.String(), barKotlinc.Implicits.Strings())
 	}
 }

 func TestKapt(t *testing.T) {
 	bp := `
 		java_library {
 			name: "foo",
 			srcs: ["a.java", "b.kt"],
 			plugins: ["bar", "baz"],
 			errorprone: {
 				extra_check_modules: ["my_check"],
 			},
 		}

 		java_plugin {
 			name: "bar",
 			processor_class: "com.bar",
 			srcs: ["b.java"],
 		}

 		java_plugin {
 			name: "baz",
 			processor_class: "com.baz",
 			srcs: ["b.java"],
 		}

 		java_plugin {
 			name: "my_check",
 			srcs: ["b.java"],
 		}
 	`
 	t.Run("", func(t *testing.T) {
 		ctx, _ := testJava(t, bp)

 		buildOS := ctx.Config().BuildOS.String()

 		kapt := ctx.ModuleForTests("foo", "android_common").Rule("kapt")
 		kotlinc := ctx.ModuleForTests("foo", "android_common").Rule("kotlinc")
 		javac := ctx.ModuleForTests("foo", "android_common").Rule("javac")

 		bar := ctx.ModuleForTests("bar", buildOS+"_common").Rule("javac").Output.String()
 		baz := ctx.ModuleForTests("baz", buildOS+"_common").Rule("javac").Output.String()

 		// Test that the kotlin and java sources are passed to kapt and kotlinc
 		if len(kapt.Inputs) != 2 || kapt.Inputs[0].String() != "a.java" || kapt.Inputs[1].String() != "b.kt" {
 			t.Errorf(`foo kapt inputs %v != ["a.java", "b.kt"]`, kapt.Inputs)
 		}
 		if len(kotlinc.Inputs) != 2 || kotlinc.Inputs[0].String() != "a.java" || kotlinc.Inputs[1].String() != "b.kt" {
 			t.Errorf(`foo kotlinc inputs %v != ["a.java", "b.kt"]`, kotlinc.Inputs)
 		}

 		// Test that only the java sources are passed to javac
 		if len(javac.Inputs) != 1 || javac.Inputs[0].String() != "a.java" {
 			t.Errorf(`foo inputs %v != ["a.java"]`, javac.Inputs)
 		}

 		// Test that the kapt srcjar is a dependency of kotlinc and javac rules
 		if !inList(kapt.Output.String(), kotlinc.Implicits.Strings()) {
 			t.Errorf("expected %q in kotlinc implicits %v", kapt.Output.String(), kotlinc.Implicits.Strings())
 		}
 		if !inList(kapt.Output.String(), javac.Implicits.Strings()) {
 			t.Errorf("expected %q in javac implicits %v", kapt.Output.String(), javac.Implicits.Strings())
 		}

 		// Test that the kapt srcjar is extracted by the kotlinc and javac rules
 		if kotlinc.Args["srcJars"] != kapt.Output.String() {
 			t.Errorf("expected %q in kotlinc srcjars %v", kapt.Output.String(), kotlinc.Args["srcJars"])
 		}
 		if javac.Args["srcJars"] != kapt.Output.String() {
 			t.Errorf("expected %q in javac srcjars %v", kapt.Output.String(), kotlinc.Args["srcJars"])
 		}

 		// Test that the processors are passed to kapt
 		expectedProcessorPath := "-P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + bar +
 			" -P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + baz
 		if kapt.Args["kaptProcessorPath"] != expectedProcessorPath {
 			t.Errorf("expected kaptProcessorPath %q, got %q", expectedProcessorPath, kapt.Args["kaptProcessorPath"])
 		}
 		expectedProcessor := "-P plugin:org.jetbrains.kotlin.kapt3:processors=com.bar -P plugin:org.jetbrains.kotlin.kapt3:processors=com.baz"
 		if kapt.Args["kaptProcessor"] != expectedProcessor {
 			t.Errorf("expected kaptProcessor %q, got %q", expectedProcessor, kapt.Args["kaptProcessor"])
 		}

 		// Test that the processors are not passed to javac
 		if javac.Args["processorpath"] != "" {
 			t.Errorf("expected processorPath '', got %q", javac.Args["processorpath"])
 		}
 		if javac.Args["processor"] != "-proc:none" {
 			t.Errorf("expected processor '-proc:none', got %q", javac.Args["processor"])
 		}
 	})

 	t.Run("errorprone", func(t *testing.T) {
 		env := map[string]string{
 			"RUN_ERROR_PRONE": "true",
 		}

 		result := android.GroupFixturePreparers(
 			PrepareForTestWithJavaDefaultModules,
 			android.FixtureMergeEnv(env),
 		).RunTestWithBp(t, bp)

 		buildOS := result.Config.BuildOS.String()

 		kapt := result.ModuleForTests("foo", "android_common").Rule("kapt")
 		javac := result.ModuleForTests("foo", "android_common").Description("javac")
 		errorprone := result.ModuleForTests("foo", "android_common").Description("errorprone")

 		bar := result.ModuleForTests("bar", buildOS+"_common").Description("javac").Output.String()
 		baz := result.ModuleForTests("baz", buildOS+"_common").Description("javac").Output.String()
 		myCheck := result.ModuleForTests("my_check", buildOS+"_common").Description("javac").Output.String()

 		// Test that the errorprone plugins are not passed to kapt
 		expectedProcessorPath := "-P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + bar +
 			" -P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + baz
 		if kapt.Args["kaptProcessorPath"] != expectedProcessorPath {
 			t.Errorf("expected kaptProcessorPath %q, got %q", expectedProcessorPath, kapt.Args["kaptProcessorPath"])
 		}
 		expectedProcessor := "-P plugin:org.jetbrains.kotlin.kapt3:processors=com.bar -P plugin:org.jetbrains.kotlin.kapt3:processors=com.baz"
 		if kapt.Args["kaptProcessor"] != expectedProcessor {
 			t.Errorf("expected kaptProcessor %q, got %q", expectedProcessor, kapt.Args["kaptProcessor"])
 		}

 		// Test that the errorprone plugins are not passed to javac
 		if javac.Args["processorpath"] != "" {
 			t.Errorf("expected processorPath '', got %q", javac.Args["processorpath"])
 		}
 		if javac.Args["processor"] != "-proc:none" {
 			t.Errorf("expected processor '-proc:none', got %q", javac.Args["processor"])
 		}

 		// Test that the errorprone plugins are passed to errorprone
 		expectedProcessorPath = "-processorpath " + myCheck
 		if errorprone.Args["processorpath"] != expectedProcessorPath {
 			t.Errorf("expected processorpath %q, got %q", expectedProcessorPath, errorprone.Args["processorpath"])
 		}
 		if errorprone.Args["processor"] != "-proc:none" {
 			t.Errorf("expected processor '-proc:none', got %q", errorprone.Args["processor"])
 		}
 	})
 }

 func TestKaptEncodeFlags(t *testing.T) {
 	// Compares the kaptEncodeFlags against the results of the example implementation at
 	// https://kotlinlang.org/docs/reference/kapt.html#apjavac-options-encoding
 	tests := []struct {
 		in  [][2]string
 		out string
 	}{
 		{
 			// empty input
 			in:  [][2]string{},
 			out: "rO0ABXcEAAAAAA==",
 		},
 		{
 			// common input
 			in: [][2]string{
 				{"-source", "1.8"},
 				{"-target", "1.8"},
 			},
 			out: "rO0ABXcgAAAAAgAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjg=",
 		},
 		{
 			// input that serializes to a 255 byte block
 			in: [][2]string{
 				{"-source", "1.8"},
 				{"-target", "1.8"},
 				{"a", strings.Repeat("b", 218)},
 			},
 			out: "rO0ABXf/AAAAAwAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjgAAWEA2mJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJi",
 		},
 		{
 			// input that serializes to a 256 byte block
 			in: [][2]string{
 				{"-source", "1.8"},
 				{"-target", "1.8"},
 				{"a", strings.Repeat("b", 219)},
 			},
 			out: "rO0ABXoAAAEAAAAAAwAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjgAAWEA22JiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYg==",
 		},
 		{
 			// input that serializes to a 257 byte block
 			in: [][2]string{
 				{"-source", "1.8"},
 				{"-target", "1.8"},
 				{"a", strings.Repeat("b", 220)},
 			},
 			out: "rO0ABXoAAAEBAAAAAwAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjgAAWEA3GJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmI=",
 		},
 	}

 	for i, test := range tests {
 		t.Run(strconv.Itoa(i), func(t *testing.T) {
 			got := kaptEncodeFlags(test.in)
 			if got != test.out {
 				t.Errorf("\nwant %q\n got %q", test.out, got)
 			}
 		})
 	}
 }
	// Copyright 2017 Google Inc. All rights reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	package java

	import (
	"strconv"
	"strings"
	"testing"

	"android/soong/android"
	)

	func TestKotlin(t *testing.T) {
	ctx, _ := testJava(t, `
	java_library {
	name: "foo",
	srcs: ["a.java", "b.kt"],
	}

	java_library {
	name: "bar",
	srcs: ["b.kt"],
	libs: ["foo"],
	static_libs: ["baz"],
	}

	java_library {
	name: "baz",
	srcs: ["c.java"],
	}
	`)

	fooKotlinc := ctx.ModuleForTests("foo", "android_common").Rule("kotlinc")
	fooJavac := ctx.ModuleForTests("foo", "android_common").Rule("javac")
	fooJar := ctx.ModuleForTests("foo", "android_common").Output("combined/foo.jar")

	if len(fooKotlinc.Inputs) != 2 \|\| fooKotlinc.Inputs[0].String() != "a.java" \|\|
	fooKotlinc.Inputs[1].String() != "b.kt" {
	t.Errorf(`foo kotlinc inputs %v != ["a.java", "b.kt"]`, fooKotlinc.Inputs)
	}

	if len(fooJavac.Inputs) != 1 \|\| fooJavac.Inputs[0].String() != "a.java" {
	t.Errorf(`foo inputs %v != ["a.java"]`, fooJavac.Inputs)
	}

	if !strings.Contains(fooJavac.Args["classpath"], fooKotlinc.Output.String()) {
	t.Errorf("foo classpath %v does not contain %q",
	fooJavac.Args["classpath"], fooKotlinc.Output.String())
	}

	if !inList(fooKotlinc.Output.String(), fooJar.Inputs.Strings()) {
	t.Errorf("foo jar inputs %v does not contain %q",
	fooJar.Inputs.Strings(), fooKotlinc.Output.String())
	}

	fooHeaderJar := ctx.ModuleForTests("foo", "android_common").Output("turbine-combined/foo.jar")
	bazHeaderJar := ctx.ModuleForTests("baz", "android_common").Output("turbine-combined/baz.jar")
	barKotlinc := ctx.ModuleForTests("bar", "android_common").Rule("kotlinc")

	if len(barKotlinc.Inputs) != 1 \|\| barKotlinc.Inputs[0].String() != "b.kt" {
	t.Errorf(`bar kotlinc inputs %v != ["b.kt"]`, barKotlinc.Inputs)
	}

	if !inList(fooHeaderJar.Output.String(), barKotlinc.Implicits.Strings()) {
	t.Errorf(`expected %q in bar implicits %v`,
	fooHeaderJar.Output.String(), barKotlinc.Implicits.Strings())
	}

	if !inList(bazHeaderJar.Output.String(), barKotlinc.Implicits.Strings()) {
	t.Errorf(`expected %q in bar implicits %v`,
	bazHeaderJar.Output.String(), barKotlinc.Implicits.Strings())
	}
	}

	func TestKapt(t *testing.T) {
	bp := `
	java_library {
	name: "foo",
	srcs: ["a.java", "b.kt"],
	plugins: ["bar", "baz"],
	errorprone: {
	extra_check_modules: ["my_check"],
	},
	}

	java_plugin {
	name: "bar",
	processor_class: "com.bar",
	srcs: ["b.java"],
	}

	java_plugin {
	name: "baz",
	processor_class: "com.baz",
	srcs: ["b.java"],
	}

	java_plugin {
	name: "my_check",
	srcs: ["b.java"],
	}
	`
	t.Run("", func(t *testing.T) {
	ctx, _ := testJava(t, bp)

	buildOS := ctx.Config().BuildOS.String()

	kapt := ctx.ModuleForTests("foo", "android_common").Rule("kapt")
	kotlinc := ctx.ModuleForTests("foo", "android_common").Rule("kotlinc")
	javac := ctx.ModuleForTests("foo", "android_common").Rule("javac")

	bar := ctx.ModuleForTests("bar", buildOS+"_common").Rule("javac").Output.String()
	baz := ctx.ModuleForTests("baz", buildOS+"_common").Rule("javac").Output.String()

	// Test that the kotlin and java sources are passed to kapt and kotlinc
	if len(kapt.Inputs) != 2 \|\| kapt.Inputs[0].String() != "a.java" \|\| kapt.Inputs[1].String() != "b.kt" {
	t.Errorf(`foo kapt inputs %v != ["a.java", "b.kt"]`, kapt.Inputs)
	}
	if len(kotlinc.Inputs) != 2 \|\| kotlinc.Inputs[0].String() != "a.java" \|\| kotlinc.Inputs[1].String() != "b.kt" {
	t.Errorf(`foo kotlinc inputs %v != ["a.java", "b.kt"]`, kotlinc.Inputs)
	}

	// Test that only the java sources are passed to javac
	if len(javac.Inputs) != 1 \|\| javac.Inputs[0].String() != "a.java" {
	t.Errorf(`foo inputs %v != ["a.java"]`, javac.Inputs)
	}

	// Test that the kapt srcjar is a dependency of kotlinc and javac rules
	if !inList(kapt.Output.String(), kotlinc.Implicits.Strings()) {
	t.Errorf("expected %q in kotlinc implicits %v", kapt.Output.String(), kotlinc.Implicits.Strings())
	}
	if !inList(kapt.Output.String(), javac.Implicits.Strings()) {
	t.Errorf("expected %q in javac implicits %v", kapt.Output.String(), javac.Implicits.Strings())
	}

	// Test that the kapt srcjar is extracted by the kotlinc and javac rules
	if kotlinc.Args["srcJars"] != kapt.Output.String() {
	t.Errorf("expected %q in kotlinc srcjars %v", kapt.Output.String(), kotlinc.Args["srcJars"])
	}
	if javac.Args["srcJars"] != kapt.Output.String() {
	t.Errorf("expected %q in javac srcjars %v", kapt.Output.String(), kotlinc.Args["srcJars"])
	}

	// Test that the processors are passed to kapt
	expectedProcessorPath := "-P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + bar +
	" -P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + baz
	if kapt.Args["kaptProcessorPath"] != expectedProcessorPath {
	t.Errorf("expected kaptProcessorPath %q, got %q", expectedProcessorPath, kapt.Args["kaptProcessorPath"])
	}
	expectedProcessor := "-P plugin:org.jetbrains.kotlin.kapt3:processors=com.bar -P plugin:org.jetbrains.kotlin.kapt3:processors=com.baz"
	if kapt.Args["kaptProcessor"] != expectedProcessor {
	t.Errorf("expected kaptProcessor %q, got %q", expectedProcessor, kapt.Args["kaptProcessor"])
	}

	// Test that the processors are not passed to javac
	if javac.Args["processorpath"] != "" {
	t.Errorf("expected processorPath '', got %q", javac.Args["processorpath"])
	}
	if javac.Args["processor"] != "-proc:none" {
	t.Errorf("expected processor '-proc:none', got %q", javac.Args["processor"])
	}
	})

	t.Run("errorprone", func(t *testing.T) {
	env := map[string]string{
	"RUN_ERROR_PRONE": "true",
	}

	result := android.GroupFixturePreparers(
	PrepareForTestWithJavaDefaultModules,
	android.FixtureMergeEnv(env),
	).RunTestWithBp(t, bp)

	buildOS := result.Config.BuildOS.String()

	kapt := result.ModuleForTests("foo", "android_common").Rule("kapt")
	javac := result.ModuleForTests("foo", "android_common").Description("javac")
	errorprone := result.ModuleForTests("foo", "android_common").Description("errorprone")

	bar := result.ModuleForTests("bar", buildOS+"_common").Description("javac").Output.String()
	baz := result.ModuleForTests("baz", buildOS+"_common").Description("javac").Output.String()
	myCheck := result.ModuleForTests("my_check", buildOS+"_common").Description("javac").Output.String()

	// Test that the errorprone plugins are not passed to kapt
	expectedProcessorPath := "-P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + bar +
	" -P plugin:org.jetbrains.kotlin.kapt3:apclasspath=" + baz
	if kapt.Args["kaptProcessorPath"] != expectedProcessorPath {
	t.Errorf("expected kaptProcessorPath %q, got %q", expectedProcessorPath, kapt.Args["kaptProcessorPath"])
	}
	expectedProcessor := "-P plugin:org.jetbrains.kotlin.kapt3:processors=com.bar -P plugin:org.jetbrains.kotlin.kapt3:processors=com.baz"
	if kapt.Args["kaptProcessor"] != expectedProcessor {
	t.Errorf("expected kaptProcessor %q, got %q", expectedProcessor, kapt.Args["kaptProcessor"])
	}

	// Test that the errorprone plugins are not passed to javac
	if javac.Args["processorpath"] != "" {
	t.Errorf("expected processorPath '', got %q", javac.Args["processorpath"])
	}
	if javac.Args["processor"] != "-proc:none" {
	t.Errorf("expected processor '-proc:none', got %q", javac.Args["processor"])
	}

	// Test that the errorprone plugins are passed to errorprone
	expectedProcessorPath = "-processorpath " + myCheck
	if errorprone.Args["processorpath"] != expectedProcessorPath {
	t.Errorf("expected processorpath %q, got %q", expectedProcessorPath, errorprone.Args["processorpath"])
	}
	if errorprone.Args["processor"] != "-proc:none" {
	t.Errorf("expected processor '-proc:none', got %q", errorprone.Args["processor"])
	}
	})
	}

	func TestKaptEncodeFlags(t *testing.T) {
	// Compares the kaptEncodeFlags against the results of the example implementation at
	// https://kotlinlang.org/docs/reference/kapt.html#apjavac-options-encoding
	tests := []struct {
	in [][2]string
	out string
	}{
	{
	// empty input
	in: [][2]string{},
	out: "rO0ABXcEAAAAAA==",
	},
	{
	// common input
	in: [][2]string{
	{"-source", "1.8"},
	{"-target", "1.8"},
	},
	out: "rO0ABXcgAAAAAgAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjg=",
	},
	{
	// input that serializes to a 255 byte block
	in: [][2]string{
	{"-source", "1.8"},
	{"-target", "1.8"},
	{"a", strings.Repeat("b", 218)},
	},
	out: "rO0ABXf/AAAAAwAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjgAAWEA2mJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJi",
	},
	{
	// input that serializes to a 256 byte block
	in: [][2]string{
	{"-source", "1.8"},
	{"-target", "1.8"},
	{"a", strings.Repeat("b", 219)},
	},
	out: "rO0ABXoAAAEAAAAAAwAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjgAAWEA22JiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYg==",
	},
	{
	// input that serializes to a 257 byte block
	in: [][2]string{
	{"-source", "1.8"},
	{"-target", "1.8"},
	{"a", strings.Repeat("b", 220)},
	},
	out: "rO0ABXoAAAEBAAAAAwAHLXNvdXJjZQADMS44AActdGFyZ2V0AAMxLjgAAWEA3GJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmI=",
	},
	}

	for i, test := range tests {
	t.Run(strconv.Itoa(i), func(t *testing.T) {
	got := kaptEncodeFlags(test.in)
	if got != test.out {
	t.Errorf("\nwant %q\n got %q", test.out, got)
	}
	})
	}
	}