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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.utils;
     18 
     19 import static com.android.settings.utils.FileSizeFormatter.GIGABYTE_IN_BYTES;
     20 import static com.android.settings.utils.FileSizeFormatter.MEGABYTE_IN_BYTES;
     21 
     22 import static com.google.common.truth.Truth.assertThat;
     23 
     24 import android.content.Context;
     25 import android.support.test.InstrumentationRegistry;
     26 import android.support.test.filters.SmallTest;
     27 import android.support.test.runner.AndroidJUnit4;
     28 
     29 import org.junit.Before;
     30 import org.junit.Test;
     31 import org.junit.runner.RunWith;
     32 
     33 @SmallTest
     34 @RunWith(AndroidJUnit4.class)
     35 public class FileSizeFormatterTest {
     36     private Context mContext;
     37 
     38     @Before
     39     public void setUp() throws Exception {
     40         mContext = InstrumentationRegistry.getTargetContext();
     41     }
     42 
     43     @Test
     44     public void formatFileSize_zero() throws Exception {
     45         assertThat(
     46                         FileSizeFormatter.formatFileSize(
     47                                 mContext,
     48                                 0 /* size */,
     49                                 com.android.internal.R.string.gigabyteShort,
     50                                 GIGABYTE_IN_BYTES))
     51                 .isEqualTo("0.00 GB");
     52     }
     53 
     54     @Test
     55     public void formatFileSize_smallSize() throws Exception {
     56         assertThat(
     57                         FileSizeFormatter.formatFileSize(
     58                                 mContext,
     59                                 MEGABYTE_IN_BYTES * 11 /* size */,
     60                                 com.android.internal.R.string.gigabyteShort,
     61                                 GIGABYTE_IN_BYTES))
     62                 .isEqualTo("0.01 GB");
     63     }
     64 
     65     @Test
     66     public void formatFileSize_lessThanOneSize() throws Exception {
     67         assertThat(
     68                         FileSizeFormatter.formatFileSize(
     69                                 mContext,
     70                                 MEGABYTE_IN_BYTES * 155 /* size */,
     71                                 com.android.internal.R.string.gigabyteShort,
     72                                 GIGABYTE_IN_BYTES))
     73                 .isEqualTo("0.16 GB");
     74     }
     75 
     76     @Test
     77     public void formatFileSize_greaterThanOneSize() throws Exception {
     78         assertThat(
     79                         FileSizeFormatter.formatFileSize(
     80                                 mContext,
     81                                 MEGABYTE_IN_BYTES * 1551 /* size */,
     82                                 com.android.internal.R.string.gigabyteShort,
     83                                 GIGABYTE_IN_BYTES))
     84                 .isEqualTo("1.6 GB");
     85     }
     86 
     87     @Test
     88     public void formatFileSize_greaterThanTen() throws Exception {
     89         // Should round down due to truncation
     90         assertThat(
     91                         FileSizeFormatter.formatFileSize(
     92                                 mContext,
     93                                 GIGABYTE_IN_BYTES * 15 + MEGABYTE_IN_BYTES * 50 /* size */,
     94                                 com.android.internal.R.string.gigabyteShort,
     95                                 GIGABYTE_IN_BYTES))
     96                 .isEqualTo("15 GB");
     97     }
     98 
     99     @Test
    100     public void formatFileSize_handlesNegativeFileSizes() throws Exception {
    101         assertThat(
    102                         FileSizeFormatter.formatFileSize(
    103                                 mContext,
    104                                 MEGABYTE_IN_BYTES * -155 /* size */,
    105                                 com.android.internal.R.string.gigabyteShort,
    106                                 GIGABYTE_IN_BYTES))
    107                 .isEqualTo("-0.16 GB");
    108     }
    109 }
    110