diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index 4d75fb8..05eaf88 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -202,6 +202,7 @@
         <attr name="demoModeLayoutId" format="reference" />
         <attr name="isScalable" format="boolean" />
         <attr name="devicePaddingId" format="reference" />
+
         <!-- File that contains the specs for the workspace.
         Needs FeatureFlags.ENABLE_RESPONSIVE_WORKSPACE enabled -->
         <attr name="workspaceSpecsId" format="reference" />
@@ -210,11 +211,14 @@
         Needs FeatureFlags.ENABLE_RESPONSIVE_WORKSPACE enabled -->
         <attr name="allAppsSpecsId" format="reference" />
         <attr name="allAppsSpecsTwoPanelId" format="reference" />
-
         <!-- File that contains the specs for the workspace.
         Needs FeatureFlags.ENABLE_RESPONSIVE_WORKSPACE enabled -->
         <attr name="folderSpecsId" format="reference" />
         <attr name="folderSpecsTwoPanelId" format="reference" />
+        <!-- File that contains the specs for hotseat bar.
+        Needs FeatureFlags.ENABLE_RESPONSIVE_WORKSPACE enabled -->
+        <attr name="hotseatSpecsId" format="reference" />
+        <attr name="hotseatSpecsTwoPanelId" format="reference" />
 
         <!-- By default all categories are enabled -->
         <attr name="deviceCategory" format="integer">
@@ -278,6 +282,11 @@
         <attr name="maxAvailableSize" />
     </declare-styleable>
 
+    <declare-styleable name="HotseatSpec">
+        <attr name="specType" />
+        <attr name="maxAvailableSize" />
+    </declare-styleable>
+
     <declare-styleable name="SizeSpec">
         <attr name="fixedSize" format="dimension" />
         <attr name="ofAvailableSpace" format="float" />
diff --git a/src/com/android/launcher3/DeviceProfile.java b/src/com/android/launcher3/DeviceProfile.java
index 353d006..7ece9a4 100644
--- a/src/com/android/launcher3/DeviceProfile.java
+++ b/src/com/android/launcher3/DeviceProfile.java
@@ -56,8 +56,10 @@
 import com.android.launcher3.responsive.AllAppsSpecs;
 import com.android.launcher3.responsive.CalculatedAllAppsSpec;
 import com.android.launcher3.responsive.CalculatedFolderSpec;
+import com.android.launcher3.responsive.CalculatedHotseatSpec;
 import com.android.launcher3.responsive.CalculatedWorkspaceSpec;
 import com.android.launcher3.responsive.FolderSpecs;
+import com.android.launcher3.responsive.HotseatSpecs;
 import com.android.launcher3.responsive.WorkspaceSpecs;
 import com.android.launcher3.uioverrides.ApiWrapper;
 import com.android.launcher3.util.DisplayController;
@@ -121,6 +123,7 @@
     private CalculatedAllAppsSpec mAllAppsResponsiveHeightSpec;
     private CalculatedFolderSpec mResponsiveFolderWidthSpec;
     private CalculatedFolderSpec mResponsiveFolderHeightSpec;
+    private CalculatedHotseatSpec mResponsiveHotseatSpec;
 
     /**
      * The maximum amount of left/right workspace padding as a percentage of the screen width.
@@ -316,7 +319,8 @@
         // TODO(b/241386436): shouldn't change any launcher behaviour
         mIsResponsiveGrid = inv.workspaceSpecsId != INVALID_RESOURCE_HANDLE
                 && inv.allAppsSpecsId != INVALID_RESOURCE_HANDLE
-                && inv.folderSpecsId != INVALID_RESOURCE_HANDLE;
+                && inv.folderSpecsId != INVALID_RESOURCE_HANDLE
+                && inv.hotseatSpecsId != INVALID_RESOURCE_HANDLE;
 
         mIsScalableGrid = inv.isScalable && !isVerticalBarLayout() && !isMultiWindowMode;
         // Determine device posture.
@@ -495,7 +499,17 @@
 
         int hotseatBarBottomSpace = pxFromDp(inv.hotseatBarBottomSpace[mTypeIndex], mMetrics);
         int minQsbMargin = res.getDimensionPixelSize(R.dimen.min_qsb_margin);
-        hotseatQsbSpace = pxFromDp(inv.hotseatQsbSpace[mTypeIndex], mMetrics);
+
+        if (mIsResponsiveGrid) {
+            HotseatSpecs hotseatSpecs =
+                    HotseatSpecs.create(new ResourceHelper(context,
+                            isTwoPanels ? inv.hotseatSpecsTwoPanelId : inv.hotseatSpecsId));
+            mResponsiveHotseatSpec = hotseatSpecs.getCalculatedHeightSpec(heightPx);
+            hotseatQsbSpace = mResponsiveHotseatSpec.getHotseatQsbSpace();
+        } else {
+            hotseatQsbSpace = pxFromDp(inv.hotseatQsbSpace[mTypeIndex], mMetrics);
+        }
+
         // Have a little space between the inset and the QSB
         if (mInsets.bottom + minQsbMargin > hotseatBarBottomSpace) {
             int availableSpace = hotseatQsbSpace - (mInsets.bottom - hotseatBarBottomSpace);
@@ -1985,6 +1999,7 @@
                     + mAllAppsResponsiveWidthSpec.toString());
             writer.println(prefix + "\tmResponsiveFolderHeightSpec:" + mResponsiveFolderHeightSpec);
             writer.println(prefix + "\tmResponsiveFolderWidthSpec:" + mResponsiveFolderWidthSpec);
+            writer.println(prefix + "\tmResponsiveHotseatSpec:" + mResponsiveHotseatSpec);
         }
     }
 
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index a4d77bd..be14844 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -190,6 +190,8 @@
     public int folderSpecsId = INVALID_RESOURCE_HANDLE;
     @XmlRes
     public int folderSpecsTwoPanelId = INVALID_RESOURCE_HANDLE;
+    public int hotseatSpecsId = INVALID_RESOURCE_HANDLE;
+    public int hotseatSpecsTwoPanelId = INVALID_RESOURCE_HANDLE;
 
     public String dbFile;
     public int defaultLayoutId;
@@ -369,6 +371,8 @@
         allAppsSpecsTwoPanelId = closestProfile.mAllAppsSpecsTwoPanelId;
         folderSpecsId = closestProfile.mFolderSpecsId;
         folderSpecsTwoPanelId = closestProfile.mFolderSpecsTwoPanelId;
+        hotseatSpecsId = closestProfile.mHotseatSpecsId;
+        hotseatSpecsTwoPanelId = closestProfile.mHotseatSpecsTwoPanelId;
         this.deviceType = deviceType;
 
         inlineNavButtonsEndSpacing = closestProfile.inlineNavButtonsEndSpacing;
@@ -820,6 +824,8 @@
         private final int mAllAppsSpecsTwoPanelId;
         private final int mFolderSpecsId;
         private final int mFolderSpecsTwoPanelId;
+        private final int mHotseatSpecsId;
+        private final int mHotseatSpecsTwoPanelId;
 
         public GridOption(Context context, AttributeSet attrs) {
             TypedArray a = context.obtainStyledAttributes(
@@ -897,6 +903,11 @@
                 mFolderSpecsTwoPanelId = a.getResourceId(
                         R.styleable.GridDisplayOption_folderSpecsTwoPanelId,
                         INVALID_RESOURCE_HANDLE);
+                mHotseatSpecsId = a.getResourceId(
+                        R.styleable.GridDisplayOption_hotseatSpecsId, INVALID_RESOURCE_HANDLE);
+                mHotseatSpecsTwoPanelId = a.getResourceId(
+                        R.styleable.GridDisplayOption_hotseatSpecsTwoPanelId,
+                        INVALID_RESOURCE_HANDLE);
             } else {
                 mWorkspaceSpecsId = INVALID_RESOURCE_HANDLE;
                 mWorkspaceSpecsTwoPanelId = INVALID_RESOURCE_HANDLE;
@@ -904,6 +915,8 @@
                 mAllAppsSpecsTwoPanelId = INVALID_RESOURCE_HANDLE;
                 mFolderSpecsId = INVALID_RESOURCE_HANDLE;
                 mFolderSpecsTwoPanelId = INVALID_RESOURCE_HANDLE;
+                mHotseatSpecsId = INVALID_RESOURCE_HANDLE;
+                mHotseatSpecsTwoPanelId = INVALID_RESOURCE_HANDLE;
             }
 
             int inlineForRotation = a.getInt(R.styleable.GridDisplayOption_inlineQsb,
diff --git a/src/com/android/launcher3/responsive/HotseatSpecs.kt b/src/com/android/launcher3/responsive/HotseatSpecs.kt
new file mode 100644
index 0000000..482508d
--- /dev/null
+++ b/src/com/android/launcher3/responsive/HotseatSpecs.kt
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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.android.launcher3.responsive
+
+import android.content.res.TypedArray
+import android.util.Log
+import com.android.launcher3.R
+import com.android.launcher3.util.ResourceHelper
+
+class HotseatSpecs(val specs: List<HotseatSpec>) {
+
+    fun getCalculatedHeightSpec(availableHeight: Int): CalculatedHotseatSpec {
+        val spec = specs.firstOrNull { availableHeight <= it.maxAvailableSize }
+        check(spec != null) { "No available height spec found within $availableHeight." }
+        return CalculatedHotseatSpec(availableHeight, spec)
+    }
+
+    companion object {
+        private const val XML_HOTSEAT_SPEC = "hotseatSpec"
+
+        @JvmStatic
+        fun create(resourceHelper: ResourceHelper): HotseatSpecs {
+            val parser = ResponsiveSpecsParser(resourceHelper)
+            val specs = parser.parseXML(XML_HOTSEAT_SPEC, ::HotseatSpec)
+            return HotseatSpecs(specs.filter { it.specType == ResponsiveSpec.SpecType.HEIGHT })
+        }
+    }
+}
+
+data class HotseatSpec(
+    val maxAvailableSize: Int,
+    val specType: ResponsiveSpec.SpecType,
+    val hotseatQsbSpace: SizeSpec
+) {
+
+    init {
+        check(isValid()) { "Invalid HotseatSpec found." }
+    }
+
+    constructor(
+        attrs: TypedArray,
+        specs: Map<String, SizeSpec>
+    ) : this(
+        maxAvailableSize =
+            attrs.getDimensionPixelSize(R.styleable.ResponsiveSpec_maxAvailableSize, 0),
+        specType =
+            ResponsiveSpec.SpecType.values()[
+                    attrs.getInt(
+                        R.styleable.ResponsiveSpec_specType,
+                        ResponsiveSpec.SpecType.HEIGHT.ordinal
+                    )],
+        hotseatQsbSpace = specs.getOrError(SizeSpec.XmlTags.HOTSEAT_QSB_SPACE)
+    )
+
+    fun isValid(): Boolean {
+        if (maxAvailableSize <= 0) {
+            Log.e(LOG_TAG, "${this::class.simpleName}#isValid - maxAvailableSize <= 0")
+            return false
+        }
+
+        // All specs need to be individually valid
+        if (!allSpecsAreValid()) {
+            Log.e(LOG_TAG, "${this::class.simpleName}#isValid - !allSpecsAreValid()")
+            return false
+        }
+
+        return true
+    }
+
+    private fun allSpecsAreValid(): Boolean {
+        return hotseatQsbSpace.isValid() && hotseatQsbSpace.onlyFixedSize()
+    }
+
+    companion object {
+        private const val LOG_TAG = "HotseatSpec"
+    }
+}
+
+class CalculatedHotseatSpec(val availableSpace: Int, val spec: HotseatSpec) {
+
+    var hotseatQsbSpace: Int = 0
+        private set
+
+    init {
+        hotseatQsbSpace = spec.hotseatQsbSpace.getCalculatedValue(availableSpace)
+    }
+
+    override fun hashCode(): Int {
+        var result = availableSpace.hashCode()
+        result = 31 * result + hotseatQsbSpace.hashCode()
+        result = 31 * result + spec.hashCode()
+        return result
+    }
+
+    override fun equals(other: Any?): Boolean {
+        return other is CalculatedHotseatSpec &&
+            availableSpace == other.availableSpace &&
+            hotseatQsbSpace == other.hotseatQsbSpace &&
+            spec == other.spec
+    }
+
+    override fun toString(): String {
+        return "${this::class.simpleName}(" +
+            "availableSpace=$availableSpace, hotseatQsbSpace=$hotseatQsbSpace, " +
+            "${spec::class.simpleName}.maxAvailableSize=${spec.maxAvailableSize}" +
+            ")"
+    }
+}
diff --git a/src/com/android/launcher3/responsive/SizeSpec.kt b/src/com/android/launcher3/responsive/SizeSpec.kt
index d3868f0..c868c9f 100644
--- a/src/com/android/launcher3/responsive/SizeSpec.kt
+++ b/src/com/android/launcher3/responsive/SizeSpec.kt
@@ -107,11 +107,20 @@
         return true
     }
 
+    fun onlyFixedSize(): Boolean {
+        if (ofAvailableSpace > 0 || ofRemainderSpace > 0 || matchWorkspace) {
+            Log.e(TAG, "SizeSpec#onlyFixedSize - only fixed size allowed for this tag")
+            return false
+        }
+        return true
+    }
+
     object XmlTags {
         const val START_PADDING = "startPadding"
         const val END_PADDING = "endPadding"
         const val GUTTER = "gutter"
         const val CELL_SIZE = "cellSize"
+        const val HOTSEAT_QSB_SPACE = "hotseatQsbSpace"
     }
 
     companion object {
diff --git a/tests/res/xml/invalid_hotseat_file_case_1.xml b/tests/res/xml/invalid_hotseat_file_case_1.xml
new file mode 100644
index 0000000..fcbc5ea
--- /dev/null
+++ b/tests/res/xml/invalid_hotseat_file_case_1.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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.
+  -->
+<hotseatSpecs xmlns:launcher="http://schemas.android.com/apk/res-auto">
+
+    <hotseatSpec
+        launcher:specType="height"
+        launcher:maxAvailableSize="847dp">
+        <hotseatQsbSpace launcher:ofAvailableSpace="1" />
+    </hotseatSpec>
+
+    <hotseatSpec
+        launcher:specType="height"
+        launcher:maxAvailableSize="9999dp">
+        <hotseatQsbSpace launcher:fixedSize="36dp" />
+    </hotseatSpec>
+
+</hotseatSpecs>
\ No newline at end of file
diff --git a/tests/res/xml/valid_hotseat_file.xml b/tests/res/xml/valid_hotseat_file.xml
new file mode 100644
index 0000000..c7f52e8
--- /dev/null
+++ b/tests/res/xml/valid_hotseat_file.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ 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.
+  -->
+<hotseatSpecs xmlns:launcher="http://schemas.android.com/apk/res-auto">
+
+    <hotseatSpec
+        launcher:specType="height"
+        launcher:maxAvailableSize="847dp">
+        <hotseatQsbSpace launcher:fixedSize="24dp" />
+    </hotseatSpec>
+
+    <hotseatSpec
+        launcher:specType="height"
+        launcher:maxAvailableSize="9999dp">
+        <hotseatQsbSpace launcher:fixedSize="36dp" />
+    </hotseatSpec>
+
+</hotseatSpecs>
\ No newline at end of file
diff --git a/tests/src/com/android/launcher3/AbstractDeviceProfileTest.kt b/tests/src/com/android/launcher3/AbstractDeviceProfileTest.kt
index 694893a..dd79ca8 100644
--- a/tests/src/com/android/launcher3/AbstractDeviceProfileTest.kt
+++ b/tests/src/com/android/launcher3/AbstractDeviceProfileTest.kt
@@ -22,6 +22,7 @@
 import android.util.DisplayMetrics
 import android.view.Surface
 import androidx.test.core.app.ApplicationProvider
+import com.android.launcher3.testing.shared.ResourceUtils
 import com.android.launcher3.util.DisplayController
 import com.android.launcher3.util.NavigationMode
 import com.android.launcher3.util.WindowBounds
@@ -320,4 +321,12 @@
     private fun writeToDevice(context: Context, fileName: String, content: String) {
         File(context.getDir("dumpTests", Context.MODE_PRIVATE), fileName).writeText(content)
     }
+
+    protected fun Float.dpToPx(): Float {
+        return ResourceUtils.pxFromDp(this, context!!.resources.displayMetrics).toFloat()
+    }
+
+    protected fun Int.dpToPx(): Int {
+        return ResourceUtils.pxFromDp(this.toFloat(), context!!.resources.displayMetrics)
+    }
 }
diff --git a/tests/src/com/android/launcher3/responsive/CalculatedFolderSpecsTest.kt b/tests/src/com/android/launcher3/responsive/CalculatedFolderSpecsTest.kt
index 863cf76..f2a269a 100644
--- a/tests/src/com/android/launcher3/responsive/CalculatedFolderSpecsTest.kt
+++ b/tests/src/com/android/launcher3/responsive/CalculatedFolderSpecsTest.kt
@@ -21,7 +21,6 @@
 import androidx.test.filters.SmallTest
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.launcher3.AbstractDeviceProfileTest
-import com.android.launcher3.testing.shared.ResourceUtils
 import com.android.launcher3.tests.R
 import com.android.launcher3.util.TestResourceHelper
 import com.google.common.truth.Truth.assertThat
@@ -118,8 +117,4 @@
             assertThat(cellSizePx).isEqualTo(calculatedWorkspace.cellSizePx)
         }
     }
-
-    private fun Int.dpToPx(): Int {
-        return ResourceUtils.pxFromDp(this.toFloat(), context!!.resources.displayMetrics)
-    }
 }
diff --git a/tests/src/com/android/launcher3/responsive/CalculatedHotseatSpecTest.kt b/tests/src/com/android/launcher3/responsive/CalculatedHotseatSpecTest.kt
new file mode 100644
index 0000000..0ecf7ba
--- /dev/null
+++ b/tests/src/com/android/launcher3/responsive/CalculatedHotseatSpecTest.kt
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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.android.launcher3.responsive
+
+import android.content.Context
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.launcher3.AbstractDeviceProfileTest
+import com.android.launcher3.tests.R as TestR
+import com.android.launcher3.util.TestResourceHelper
+import com.google.common.truth.Truth.assertThat
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class CalculatedHotseatSpecTest : AbstractDeviceProfileTest() {
+    override val runningContext: Context = InstrumentationRegistry.getInstrumentation().context
+
+    /**
+     * This test tests:
+     * - (height spec) gets the correct breakpoint from the XML - skips the first breakpoint
+     */
+    @Test
+    fun normalPhone_returnsSecondBreakpointSpec() {
+        val deviceSpec = deviceSpecs["phone"]!!
+        initializeVarsForPhone(deviceSpec)
+
+        // Hotseat uses the whole device height
+        val availableHeight = deviceSpec.naturalSize.second
+
+        val hotseatSpecs =
+            HotseatSpecs.create(TestResourceHelper(context!!, TestR.xml.valid_hotseat_file))
+        val heightSpec = hotseatSpecs.getCalculatedHeightSpec(availableHeight)
+
+        assertThat(heightSpec.availableSpace).isEqualTo(availableHeight)
+        assertThat(heightSpec.hotseatQsbSpace).isEqualTo(95)
+    }
+
+    /**
+     * This test tests:
+     * - (height spec) gets the correct breakpoint from the XML - use the first breakpoint
+     */
+    @Test
+    fun smallPhone_returnsFirstBreakpointSpec() {
+        val deviceSpec = deviceSpecs["phone"]!!
+        deviceSpec.densityDpi = 540 // larger display size
+        initializeVarsForPhone(deviceSpec)
+
+        // Hotseat uses the whole device height
+        val availableHeight = deviceSpec.naturalSize.second
+
+        val hotseatSpecs =
+            HotseatSpecs.create(TestResourceHelper(context!!, TestR.xml.valid_hotseat_file))
+        val heightSpec = hotseatSpecs.getCalculatedHeightSpec(availableHeight)
+
+        assertThat(heightSpec.availableSpace).isEqualTo(availableHeight)
+        assertThat(heightSpec.hotseatQsbSpace).isEqualTo(81)
+    }
+}
diff --git a/tests/src/com/android/launcher3/responsive/FolderSpecsTest.kt b/tests/src/com/android/launcher3/responsive/FolderSpecsTest.kt
index e21af57..4b05949 100644
--- a/tests/src/com/android/launcher3/responsive/FolderSpecsTest.kt
+++ b/tests/src/com/android/launcher3/responsive/FolderSpecsTest.kt
@@ -22,7 +22,6 @@
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.launcher3.AbstractDeviceProfileTest
 import com.android.launcher3.responsive.ResponsiveSpec.SpecType
-import com.android.launcher3.testing.shared.ResourceUtils
 import com.android.launcher3.tests.R
 import com.android.launcher3.util.TestResourceHelper
 import com.google.common.truth.Truth.assertThat
@@ -249,12 +248,4 @@
         val folderSpecs = FolderSpecs.create(resourceHelper)
         folderSpecs.getCalculatedHeightSpec(cells, availableSpace, calculatedWorkspaceSpec)
     }
-
-    private fun Float.dpToPx(): Float {
-        return ResourceUtils.pxFromDp(this, context!!.resources.displayMetrics).toFloat()
-    }
-
-    private fun Int.dpToPx(): Int {
-        return ResourceUtils.pxFromDp(this.toFloat(), context!!.resources.displayMetrics)
-    }
 }
diff --git a/tests/src/com/android/launcher3/responsive/HotseatSpecsTest.kt b/tests/src/com/android/launcher3/responsive/HotseatSpecsTest.kt
new file mode 100644
index 0000000..c764e47
--- /dev/null
+++ b/tests/src/com/android/launcher3/responsive/HotseatSpecsTest.kt
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * 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.android.launcher3.responsive
+
+import android.content.Context
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.launcher3.AbstractDeviceProfileTest
+import com.android.launcher3.tests.R as TestR
+import com.android.launcher3.util.TestResourceHelper
+import com.android.systemui.util.dpToPx
+import com.google.common.truth.Truth.assertThat
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@SmallTest
+@RunWith(AndroidJUnit4::class)
+class HotseatSpecsTest : AbstractDeviceProfileTest() {
+    override val runningContext: Context = InstrumentationRegistry.getInstrumentation().context
+
+    @Before
+    fun setup() {
+        initializeVarsForPhone(deviceSpecs["phone"]!!)
+    }
+
+    @Test
+    fun parseValidFile() {
+        val hotseatSpecs =
+            HotseatSpecs.create(TestResourceHelper(context!!, TestR.xml.valid_hotseat_file))
+        assertThat(hotseatSpecs.specs.size).isEqualTo(2)
+
+        val expectedSpecs =
+            listOf(
+                HotseatSpec(
+                    maxAvailableSize = 847.dpToPx(),
+                    specType = ResponsiveSpec.SpecType.HEIGHT,
+                    hotseatQsbSpace = SizeSpec(24f.dpToPx())
+                ),
+                HotseatSpec(
+                    maxAvailableSize = 9999.dpToPx(),
+                    specType = ResponsiveSpec.SpecType.HEIGHT,
+                    hotseatQsbSpace = SizeSpec(36f.dpToPx())
+                ),
+            )
+
+        assertThat(hotseatSpecs.specs.size).isEqualTo(expectedSpecs.size)
+        assertThat(hotseatSpecs.specs[0]).isEqualTo(expectedSpecs[0])
+        assertThat(hotseatSpecs.specs[1]).isEqualTo(expectedSpecs[1])
+    }
+
+    @Test(expected = IllegalStateException::class)
+    fun parseInvalidFile_spaceIsNotFixedSize_throwsError() {
+        HotseatSpecs.create(TestResourceHelper(context!!, TestR.xml.invalid_hotseat_file_case_1))
+    }
+}
diff --git a/tests/src/com/android/launcher3/responsive/SizeSpecTest.kt b/tests/src/com/android/launcher3/responsive/SizeSpecTest.kt
index 088cae1..8ca07c6 100644
--- a/tests/src/com/android/launcher3/responsive/SizeSpecTest.kt
+++ b/tests/src/com/android/launcher3/responsive/SizeSpecTest.kt
@@ -139,4 +139,20 @@
             assertThat(instance.isValid()).isEqualTo(false)
         }
     }
+
+    @Test
+    fun onlyFixedSize() {
+        assertThat(SizeSpec(fixedSize = 16f).onlyFixedSize()).isEqualTo(true)
+
+        val combinations =
+            listOf(
+                SizeSpec(0f, 1.1f, 0f, false),
+                SizeSpec(0f, 0f, 1.1f, false),
+                SizeSpec(0f, 0f, 0f, true)
+            )
+
+        for (instance in combinations) {
+            assertThat(instance.onlyFixedSize()).isEqualTo(false)
+        }
+    }
 }