/*
 * Copyright 2016-2022 DiffPlug
 *
 * 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 com.diffplug.spotless.generic;

import java.io.File;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import com.diffplug.spotless.FormatterStep;
import com.diffplug.spotless.ResourceHarness;
import com.diffplug.spotless.SerializableEqualityTester;
import com.diffplug.spotless.StepHarness;

class IndentStepTest extends ResourceHarness {
	@Test
	void tabToTab() throws Throwable {
		FormatterStep indent = IndentStep.Type.TAB.create(4);
		assertOnResources(indent, "indent/IndentedWithTab.test", "indent/IndentedWithTab.test");
	}

	@Test
	void spaceToSpace() throws Throwable {
		FormatterStep indent = IndentStep.Type.SPACE.create(4);
		assertOnResources(indent, "indent/IndentedWithSpace.test", "indent/IndentedWithSpace.test");
	}

	@Test
	void spaceToTab() throws Throwable {
		FormatterStep indent = IndentStep.Type.TAB.create(4);
		assertOnResources(indent, "indent/IndentedWithSpace.test", "indent/IndentedWithTab.test");
	}

	@Test
	void tabToSpace() throws Throwable {
		FormatterStep indent = IndentStep.Type.SPACE.create(4);
		assertOnResources(indent, "indent/IndentedWithTab.test", "indent/IndentedWithSpace.test");
	}

	@Test
	void doesntClipNewlines() throws Throwable {
		FormatterStep indent = IndentStep.Type.SPACE.create(4);
		String blankNewlines = "\n\n\n\n";
		Assertions.assertEquals(blankNewlines, indent.format(blankNewlines, new File("")));
	}

	@Test
	void equality() {
		new SerializableEqualityTester() {
			IndentStep.Type type = IndentStep.Type.SPACE;
			int numSpacesPerTab = 2;

			@Override
			protected void setupTest(API api) {
				api.areDifferentThan();

				numSpacesPerTab = 4;
				api.areDifferentThan();

				type = IndentStep.Type.TAB;
				api.areDifferentThan();

				numSpacesPerTab = 2;
				api.areDifferentThan();
			}

			@Override
			protected FormatterStep create() {
				return type.create(numSpacesPerTab);
			}
		}.testEquals();
	}

	@Test
	void allowLeadingSpaceIfMultiLineComment() throws Exception {
		StepHarness.forStep(IndentStep.Type.TAB.create(4))
			.testUnaffected("* test")
			.testUnaffected(" * test")
			.testUnaffected("\t* test")
			.test("    * test", "\t* test");
	}
}

@@ -2637,24 +2637,25 @@
 eate(4))%0A%09%09%09
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 .testUnaffec
@@ -2660,32 +2660,33 @@
 ected(%22* test%22)%0A
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 %09%09%09.testUnaffect
@@ -2698,24 +2698,25 @@
 * test%22)%0A%09%09%09
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 .testUnaffec
@@ -2731,16 +2731,17 @@
  test%22)%0A
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Fix code style